{"id":20,"date":"2020-12-19T12:38:45","date_gmt":"2020-12-19T11:38:45","guid":{"rendered":"http:\/\/www.galletta.it\/ggnew\/?page_id=20"},"modified":"2023-02-03T15:03:46","modified_gmt":"2023-02-03T14:03:46","slug":"ricerca","status":"publish","type":"page","link":"https:\/\/www.galletta.it\/gg\/en\/researches\/","title":{"rendered":"Researches"},"content":{"rendered":"

Since 1976, his research has focused on the motion of stars and gas within galaxies. In 1986, his scientific achievements earned him a promotion to Associate Professor (II fascia), holding the Chair of Astronomy for the Degree Programme in Natural Sciences. While his research has been primarily observational, he has also worked on theoretical models of galaxies and their simulation through computational techniques.<\/p>\r\n\r\n

In 1978, he discovered a new type of galaxy with an elongated structure (triaxial galaxies with polar rings), also developing the first theoretical models to describe them.<\/p>\r\n\r\n

In 1985, he discovered the phenomenon of counter-rotation in galaxies, where the gas rotates in the opposite direction to the stars.

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He has conducted observations using major European optical telescopes at La Silla (Chile), the 3.9m Anglo-Australian Telescope in Australia, British and Spanish telescopes at La Palma (Canary Islands, Spain), as well as the SEST (Chile), VLA (USA), and IRAM (Spain-France) radiotelescopes, and the IUE and GALEX satellites.<\/p>\r\n\r\n

Since 2000, he has been involved in Astrobiology. In 2006, he conceived and directed the LISA project (Italian Laboratory for Environment Simulation), conducting biological experiments in simulated Martian environments.<\/p>\r\n

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\r\n \r\n <\/i><\/span>\r\n <\/i><\/span>\r\n <\/span>\r\n Main Scientific Results<\/span>\r\n <\/div>\r\n
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1. The existence of \u2018prolate\u2019 galaxies (Ap.J. 226, L115, 1978<\/i>)<\/strong><\/p>\n

Around the end of the 1970s, some astronomers, such as J. Binney, suggested that the structure of elliptical galaxies could be triaxial rather than oblate. Most of the effort during those years was devoted to statistical tests of this idea, while no direct proof of non-oblate galaxies yet existed. In 1978, \"Bertola and Galletta\u2019s discovery of a class of ellipticals with minor-axis dust lanes suggested that these galaxies would be good candidates for being prolate1<\/sup>.\u00a0 <\/em>They suggest a new class of galaxies: prolate stellar structures cut equatorially by gaseous planes2<\/sup>\".<\/i> This was one of the first papers attempting to use observations to distinguish between oblate and prolate potentials.\"The discovery of inclined and warped gas disks in ellipticals has opened up the possibility to learn about the shape of the potential, i.e., whether it is generally oblate, prolate or triaxial. As a result<\/span>, many theoretical and observational papers have been devoted to this sub<\/span>ject in the past years1<\/sup>.\" <\/em>In this paper, Bertola and Galletta indicated a few objects possibly related to minor-axis, dust-lane ellipticals, such as NGC 2685 (the Spindle Galaxy) and NGC 4650A. These galaxies were later discovered to belong to another class of peculiar objects: Polar Ring Galaxies3<\/sup>.<\/p>\n

2. Triaxial models of Elliptical galaxies (MNRAS, 193, 885, 1980<\/i>)<\/strong><\/p>\n

The statistical approach to demonstrate the triaxiality of Elliptical galaxies was a hot subject at the beginning of the \u201980s. In this year, appears a paper where \"Benacchio and Galletta have made an interesting first attempt to study the distribution of intrinsic shapes [\u2026] The best fit is obtained for models that are mildly triaxial. [\u2026] The machinery developed in this paper is u<\/span>seful, and should <\/span>yield stricter limits on galaxies shapes when applied to more accurate measurements of a larger sample of galaxies4<\/sup>.\"<\/em><\/p>\n

3. The relation between twisting and flattening in Ellipticals (A&A, 81, 179, 1980<\/i>)<\/strong><\/p>\n

Another way to demonstrate the triaxiality of certain elliptical galaxies is to study the twisting of their isophotes, which is a typical consequence of triaxiality. Unlike intrinsic distortions such as the warping of the equatorial plane, triaxiality follows its own specific rules. In 1980, the first paper was published showing that the total twist angle \u0394\u03c6<\/span> correlates with apparent ellipticity. Galaxies that are highly flattened ( 0.25\" data-index-in-node=\"443\">\u03b5 > 0.25<\/span>) show only small twists ( \u0394\u03c6<\/span>\u00a0<span class="math-inline" data-math="Deltaphi < 20\u00b0<\/span>). This relation for galaxies with a luminosity profile following the r1\/4<\/sup><\/span> law has since been confirmed by various authors.<\/p>\n

4. The existence of S0s with counter-rotation (ApJ 318, 531, 1987<\/i>)<\/strong><\/p>\n

In 1986, during a systematic study of barred S0s conducted at ESO, Galletta found the first S0 galaxy (NGC 4546) in which the gas disk rotates in the opposite direction with respect to the stars (counter-rotation). Parallel to the discovery of counter-rotation in Ellipticals5,6<\/sup>, \"this was an extraordinarily clear example of a \u201csecond event\u201d in the history of a galaxy7<\/sup>.\"<\/em><\/p>\n

5. The existence of Spirals with counter-rotation (Nature, 375, 661, 1995<\/i>)<\/strong><\/p>\n

Focusing on the effects of interactions between galaxies, Galletta sought to link various types of galaxies (dust-lane Ellipticals, polar-ring S0s, and Elliptical and S0 galaxies with counter-rotation) into a unified framework, proposing them as different outcomes of the same gas accretion phenomenon. Consequently, starting in 1983, he began observing a number of spiral galaxies featuring anomalous dust arcs. Ultimately, together with Ciri and Bettoni, he discovered the first spiral galaxy where the entire gaseous disk is in counter-rotation.<\/p>\n

(in italic<\/em> are the citations from review by other authors)<\/p>\n

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  1. \n
      \n
    1. F. Schweizer, 1983, I.A.U. Symp. n.127<\/i>, ed. T. de Zeeuw, p. 114.<\/li>\n
    2. Voigt, Huchtmeier, 1982, Landolt-B\u00f6rnstein, Handbuch der Physik<\/i>, Vol. 2c, p. 256, Springer-Verlag.<\/li>\n
    3. F. Schweizer, B.C. Whitmore, V.C. Rubin, 1983, AJ<\/i> 88, 909.<\/li>\n
    4. J. Kormendy, 1982, Morphology and Dynamics of Galaxies<\/i>, XII Adv. Course SAAS-FEE, ed. L. Martinet and M. Mayor, p. 150.<\/li>\n
    5. D. Bettoni, 1984, The Messenger<\/i> 37, 17.<\/li>\n
    6. N. Caldwell, R.P. Kirshner, D.O. Richstone, 1986, ApJ<\/i> 305, 136.<\/li>\n
    7. From a personal letter by Prof. M. Schwarzschild, Princeton, March 2, 1987.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<\/div>\n <\/div>\r\n <\/div>\r\n\r\n\r\n\r\n <\/div>\n\r\n\r\n
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      \r\n \r\n
      \r\n \r\n <\/i><\/span>\r\n <\/i><\/span>\r\n <\/span>\r\n Scientific Publications<\/span>\r\n <\/div>\r\n
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      List of scientific publications by Giuseppe Galletta. Each entry contains: authors, year of publication, title, scientific journal or publisher, volume, pages, bibliographic identifiers (ISBN or ISSN), and the publication archive number of the University of Padua. Publications are numbered in reverse chronological order. The list includes: articles in international journals, papers presented at international conferences, monographs in Italian, and databases within the Strasbourg Astronomical Data Center (CDS) archive.<\/p>\n

      124 \u00a0\u2013 Galletta, G. (2026). \u00a0The Many Faces of Astrobiology, Modern Culture\u2019s Answers to an Ancient Question, Springer Nature, in press.<\/p>\n

      123 \u2013 Galletta, G. (2025). Schizzi di Cosmologia.\u00a0 p. 1-102, Padova: Padova University Press, ISBN : 9788869384554<\/p>\n

      122 \u2013 Galletta, G. (2021). Astrobiologia: la ricerca di vita nello spazio. p. 1-250, Padova: Padova University Press, ISBN 978-88-6938-229-1<\/p>\n

      121 \u2013 Galletta, G., G. (2017). Cosmos 2017. p. 1-137, Montebelluna (TV): Museo di Storia Naturale e Archeologia di Montebelluna, ISBN: 978-88-97241-05-8<\/p>\n

      120 - Claudi, R., Pace, E., Ciaravella, A., Micela, G., Piccioni, G., Billi, D., Cestelli Guidi, M., Coccola, L., Erculiani, M. S., Fedel, M., Galletta, G., Giro, E., La Rocca, N., Morosinotto, T., Poletto, L., Schierano, D., Stefani, S. (2016). Atmosphere in a Test Tube. \u00a0Memorie della Societ\u00e0 Astronomica Italiana<\/em>, vol. 87, p. 104-111, ISSN: 1824-016X<\/p>\n

      119 - Erculiani, M. S., Claudi, R., Cocola, L., Giro, E., La Rocca, N., Morosinotto, T., Poletto, L., Barbisan, D., Billi, D., Bonato, M., D'Alessandro, M., Galletta, G., Meneghini, M., Trivellin, N., Cestelli Guidi, M., Pace, E., Schierano, D., Micela, G. (2016). Atmospheres in a Test Tube: state of the art at the Astronomical Observatory of Padova. \u00a0<\/em>Memorie della Societ\u00e0 Astronomica Italiana<\/em>, vol. 87, p. 112-120, ISSN: 1824-016X<\/p>\n

      118 - Claudi R., Erculiani M.S., Galletta G., Billi D., Pace E., Schierano D., Giro E., D'Alessandro M. (2016). Simulating super earth atmospheres in the laboratory. International Journal of Astrobiology<\/em>, vol. 15, p. 35-44, ISSN: 1473-5504, doi: 10.1017\/S1473550415000117<\/p>\n

      117 - Buson L.M, Bettoni D., Mazzei P., Galletta G. (2015). UGC 7639: A dwarf galaxy in the Canes Venatici I cloud. Advances in Astronomy<\/em>, vol. 2015, p. 1-10, ISSN: 1687-7969, doi: 10.1155\/2015\/274968<\/p>\n

      116 \u2013 Bettoni, D., Marino, A., Rampazzo, R., Plana, H., Rosado, M., Galletta, G., Mazzei, P., Bianchi, L., Buson, L. M., Ambrocio-Cruz, P., Gabbasov, R. (2015). Tracing the evolution within nearby galaxy groups: a multi-wavelength approach. In: Proceedings of the International Astronomical Union<\/em>, vol. 10, p. 119, Cambridge University Press, ISSN: 1743-9213, luglio 2014, doi: 10.1017\/S1743921314004815<\/p>\n

      115 - Mazzei, P., Marino, A., Rampazzo, R., Galletta, G., Bettoni, D. (2014). Catching spiral - S0 transition in groups. Insights from SPH simulations with chemo-photometric implementation. Advances in Space Research<\/em>, vol. 53, p. 950-962, ISSN: 0273-1177, doi: 10.1016\/j.asr.2013.06.001<\/p>\n

      114 - Marino, A., L. Bianchi, Mazzei, P., Rampazzo, R., Galletta, G. (2014). Galaxy evolution in groups. USGC U268 and USGC U376 in the Leo cloud. Advances in Space Research<\/em>, vol. 53, p. 920-927, ISSN: 0273-1177, doi: 10.1016\/j.asr.2013.09.029<\/p>\n

      113 - Bettoni, D., Mazzei, P., Rampazzo, R., Marino, A., Galletta, G., Buson, L.M. (2014). The UV window on counter rotating ETGs: insight from SPH simulations with chemo-photometric implementation. Astrophysics and Space Science<\/em>, p. 1-6, ISSN: 0004-640X, doi: 10.1007\/s10509-014-1973-0<\/p>\n

      112 - Erculiani, M. S., Claudi, R. U., Giro, E., Galletta, G., D\u2019Alessandro, M., Farsisato, G., Lessio, L., Micela, G., Billi, D. (2014). Interpreting EChO's future data: biological laboratory extimates under M star's planetary surface conditions. In: Space telescopes and instrumentation 2014: optical, infrared, and millimeter wave<\/em>. vol. 9143, Society of Photo-Optical Instrumentation Engineers (SPIE)., ISBN: 9780819496119, Montreal, Canada, Agosto 2014, doi: 10.1117\/12.2055854<\/p>\n

      111 - Claudi, R. U., Erculiani, M. S., Micela, G., D\u2019Alessandro, M., Galletta, G., Giro, E., Adriani, A., Altieri, F., Bellucci, G., Billi, D., Cecchi-Pestellini, C., Ciaravella, A., Filacchione, G., Gilli, G., Giuranna, M., Grassi, D., Leto, G., Pace, E., Palumbo, M. E., Piccioni, G., Scuderi, S., Strazzulla, G., Turrini, D. (2014). Preparing EChO space mission: laboratory simulation of planetary atmospheres. In: Space telescopes and instrumentation 2014: optical, infrared, and millimeter wave<\/em>. vol. 9143, p. 1-12, ISBN: 9780819496119, Montreal, Canada, August 2014, doi: 10.1117\/12.2055115<\/p>\n

      110 - Bettoni, D., Mazzei, P., Marino, A., Rampazzo, R., Galletta, G., Buson L. M.(2014). The Ultraviolet View of Multi-Spin Galaxies: Insight from Smooth Particle Hydrodynamic Simulations. In: Multi-Spin Galaxies. vol. 486, p. 35-38, ASP Conference Series, Napoli, ottobre 2013<\/p>\n

      109 - Marino, A., Plana, H., Rampazzo, R., Bianchi, L., Rosado, M., Bettoni, D., Galletta, G., Mazzei, P., Buson, L., Ambrocio Cruz, P., Gabbasov, R. F.\u00a0 (2013). Galaxy evolution in nearby loose groups - II. Photometric and kinematic characterization of USGC U268 and USGC U376 group members in the Leo cloud. Monthly Notices of the Royal Astronomical Society<\/em>, vol. 428, p. 476-501, ISSN: 0035-8711, doi: 10.1093\/mnras\/sts039<\/p>\n

      108 - Marino, A., Mazzei, P., Rampazzo, R., Bianchi, L., Galletta, G., Bettoni, D., Buson, L. M. (2013). Early-type galaxies across the UV-optical color magnitude diagram. In: European Week of Astronomy and Space Science<\/em>. p. 1, Turku, Finland, 8-12 July 2013<\/p>\n

      107 - Spavone, M., Iodice, E., Bettoni, D., Galletta, G., Mazzei, P., Reshetnikov, V. (2012). A new photometric investigation of the double-ringed galaxy ESO\u2009474\u2212G26: unveiling the formation scenario. Monthly Notices of the Royal Astronomical Society<\/em>, vol. 426, p. 2003-2018, ISSN: 0035-8711, doi: 10.1111\/j.1365-2966.2012.21815.x<\/p>\n

      106 - Bettoni, D., L. Buson, Mazzei, P., Galletta, G. (2012). Insight into the evolution of the innermost region of the NGC1023 Group. Monthly Notices of the Royal Astronomical Society<\/em>, p. no, ISSN: 0035-8711, doi: 10.1111\/j.1365-2966.2012.21111.x<\/p>\n

      105 \u2013 Pace, E., Piccioni, M, Micela, G., Galletta, G., De Sio, A., Grilli, A., Cestelli Guidi, M., Scuderi, S, Giro, E., Focardi, M., Claudi, R. (2012). Planetary atmospheres in a test tube. In: 39TH COSPAR Scientific Assembly<\/em>. vol. 39, p. 1425, Mysore, India, 14-22 July 2012<\/p>\n

      104 \u2013 Buson, L. M., Bettoni, D., Galletta, G. (2011). An extended ultraviolet ring around the SB0 galaxy NGC 4262. Astrophysics and Space Science<\/em>, vol. 98, p. 1-6, ISSN: 0004-640X, doi: 10.1007\/s10509-011-0682-1<\/p>\n

      103 - Bettoni, D., Galletta, G., Rampazzo, R., Marino, A., Mazzei, P., Buson, L.M. (2011). NGC 3934: a shell galaxy in a compact galaxy environment. Astronomy and Astrophysics<\/em>, vol. 534, p. A24-1-A24-13, ISSN: 0004-6361, doi: 10.1051\/0004-6361\/201117106<\/p>\n

      102 - Galletta, G., G. Bertoloni, D\u2019Alessandro, M. (2011). New approaches to the exploration: planet Mars and bacterial life. In: ASTRO-PH 2011ARXIV1102.4438G - Proceedings of IAU Symposium 269<\/em>. vol. 269, p. 1-4, Padova, Gennaio 2010<\/p>\n

      101 - Bettoni, D., Galletta, G., Rampazzo, R., Marino, A., Mazzei, P., Buson,L.M. (2011). The molecular gas rich galaxy NGC 3934: a multiwavelenght view. In: Posters from the Proceedings of the 280th Symposium of the International Astronomical Union<\/em>. p. 1, Toledo, Spain, May 30-June 3, 2011<\/p>\n

      100 - Bettoni, D., Buson, L.M., Galletta, G. (2010). NGC 4262: a Virgo galaxy with an extended ultraviolet ring. Astronomy and Astrophysics<\/em>, vol. 519, p. A72-1-A72-7, ISSN: 0004-6361, doi: 10.1051\/0004-6361\/201014750<\/p>\n

      99 - Galletta, G., G. Bertoloni, D\u2019Alessandro, M. (2010). Bacterial survival in Martian conditions. In: ASTRO-PH ARXIV<\/em>:1002.4077. p. 1-5, ESA\/ESRIN in Frascati, Italy., 25 - 27 November 2009<\/p>\n

      98 - Galletta, G., D\u2019Alessandro, M., G. Bertoloni, F. Castellani (2010). Surviving on Mars: test with LISA simulator. In: Proceedings of the International Astronomical Union - Highlights of Astronomy<\/em>. vol. 15, p. 686-687, Cambridge: Cambridge University Press, Rio de Janeiro, doi: 10.1017\/S1743921310010951<\/p>\n

      97 - Guidetti R, Altiero T, Cesari M, Rizzo A.M, Bertolani R, Galletta, G., D\u2019Alessandro, M., Rebecchi L (2010). Tardigrades living in extreme environments have naturally selected prerequisites useful to space conquer. In: 38th COSPAR Scientific Assembly. COSPAR<\/em>, Bremen, Germany, 18-15 July 2010<\/p>\n

      96 - Marino, A., E. Iodice, R. Tantalo, L. Piovan, Bettoni, D., L.M. Buson, C. Chiosi, Galletta, G., Rampazzo, R., Rich R. M. (2009). GALEX UV properties of the polar ring galaxy MCG-05-07-001 and the shell galaxies NGC 1210 and NGC 5329. Astronomy and Astrophysics<\/em>, vol. 508, p. 1235-1252, ISSN: 0004-6361, doi: 10.1051\/0004-6361\/200911819<\/p>\n

      95 - M. Spavone, Iodice E, Calvi R, Bettoni, D., Galletta, G., Longo G, Mazzei P, Minervini G. (2009). Revisiting the formation History of the minor-axis dust lane galaxy NGC1947. Monthly Notices of the Royal Astronomical Society<\/em>, vol. 393, p. 317-328, ISSN: 0035-8711, doi: 10.1111\/j.1365-2966.2008.14231.x<\/p>\n

      94 - R. Visentin, G. Bertoloni, D\u2019Alessandro, M., Galletta, G. (2009). First Results from Mars Simulator LISA. In: 2008 ISSOL meeting. Origins of life and evolution of the biosphere, vol. 39, p. 375, ISSN: 0169-6149, Firenze, 24\u201329 August 2008. doi: 10.1007\/s11084-009-9164-7<\/p>\n

      93 - V. Casasola, F. Combes, Bettoni, D., M. Pohlen m, Galletta, G., F. Tenaglia (2008). Are truncated stellar disks linked to the molecular gas density?. In: Sience with the Atacama Large Millimeter Array: Astrophysics and Space Science<\/em>, vol. 313, ISSN: 0004-640X, Madrid, 13-17 November 2006<\/p>\n

      92 - V. Casasola, F. Combes, Galletta, G., Bettoni, D. (2008). Molecular Gas and Star Formation in M81. In: Pathways Through an Eclectic Universe, J. H. Knapen, T. J. Mahoney, and A. Vazdekis (Eds.), ASP Conf. Ser<\/em>. vol. 390, p. 170-171<\/p>\n

      91 - Marino, A., Rampazzo, R., R. Tantalo, Bettoni, D., L.M. Buson, Chiosi C, Galletta, G. (2008). The GALEX UV emission in shell galaxies. In:\u00a0 Formation and evolution of galaxies disks J.G. Funes, S.J., and E. M. Corsini (Eds.), ASP Conf. Ser<\/em>., 2008. vol. 396, p. 279-283<\/p>\n

      90 - Bettoni, D., Marino, A., L.M. Buson, C. Chiosi, Galletta, G., Rampazzo, R., R. Tantalo, Rich M. (2008). Tracing Galaxy Evolution in the Field: the UV Emission in Shell Galaxies Mapped by GALEX. In: mapping the Galaxy and nearby galaxies, Astrophysics and Space Science<\/em> Proceedings<\/em>. p. 311, Springer Science+Business Media, ISBN: 9780387727677<\/p>\n

      89 - Galletta, G. (2008). Cosmos - viaggio alla scoperta dell'universo. p. 1-137, Montebelluna (TV): Museo di St. naturale e Archeologia di Montebelluna, ISBN: 8890141174<\/p>\n

      88 - Galletta, G., D\u2019Alessandro, M., G. Bertoloni, G. Fanti, Dainese E, Pelizzo M, Ferri F, Pavarin D, Bettanini C, Bianchini G, Debei S (2007). LISA: Mars and the limits of life. \u00a0Memorie della Societ\u00e0 Astronomica Italiana<\/em>, vol. 78, p. 608-611, ISSN: 1824-016X<\/p>\n

      87 - V. Casasola, F. Combes, Bettoni, D., Galletta, G. (2007). Molecular clouds in the center of M81. Astronomy and Astrophysics<\/em>, vol. 473, p. 771-781, ISSN: 0004-6361, doi: 10.1051\/0004-6361:20077883<\/p>\n

      86 - Galletta, G., V. Casasola, L. Piovan, E. Merlin, Bettoni, D. (2007). Relations between interstellar medium tracers in galaxies. Astronomy and Astrophysics<\/em>, vol. 462, p. 495-506, ISSN: 0004-6361<\/p>\n

      85 - Rampazzo, R., Marino, A., R. Tantalo, Bettoni, D., L.M. Buson, Chiosi C, Galletta, G., Grueztbauch, R., Rich, R. M. (2007). The GALEX UV emission in shell galaxies: tracing galaxy \"rejuvenation\" episodes. Monthly Notices of the Royal Astronomical Society<\/em>, vol. 381, p. 245-262, ISSN: 0035-8711, doi: 10.1111\/j.1365-2966.2007.12246.x<\/p>\n

      84 - L.M. Buson, Bettoni, D., Marino, A., Chiosi C, Galletta, G., Rampazzo, R., R. Tantalo, Rich R.M (2007). Insights about induced SFR in the Shell Systems of Early-Type Galaxies from UV (GALEX). In: -. Galaxy evolution across the Hubble time, Edited by F. Combes and J. Palous,. Prague, Czech Republic, 14-17 August, 2006, vol. 235, p. 305, Cambridge: Cambridge University Press<\/p>\n

      83 - V. Casasola, F. Combes, Galletta, G., Bettoni, D. (2007). Molecular gas and star formation in M81. In: Pathways through an eclectic universe<\/em>, J. H. Knapen, T. J. Mahoney, and A. Vazdekis (Eds.), ASP Conf. Ser., 2007. p. 170-171, J. H. Knapen, T. J. Mahoney, and A. Vazdekis, ASP, Tenerife, 23-27 Aprile 2007<\/p>\n

      82 - V. Casasola, Piovan, L., Galletta, G., Bettoni, D., Merlin, E. (2007). Study of ISM tracers in galaxies. In: From stars to galaxies: building the pieces to build up the universe, Vallenari et al. eds.,. vol. 374, p. 491-492, ASP Conference Series<\/p>\n

      81 - Galletta, G., G. Rodighiero, Bettoni, D., Moles, M., Varela, J. (2006). Isolated galaxies: residual of primordial building blocks?. Astronomy and Astrophysics<\/em>, vol. 456, p. 91-95, ISSN: 0004-6361, doi: 10.1051\/0004-6361:20065026<\/p>\n

      80 - Galletta, G., Ferri, F., Fanti, G., M. D'Alessandro, G. Bertoloni, Pavarin, D., C. Bettanini Fecia di Cossato, P. Cozza, P. Pretto, Bianchini, G., Debei, S. (2006). S.A.M., the Italian Martian Simulation Chamber. Origins of life and evolution of the biosphere<\/em>, vol. 36, p. 625-627, ISSN: 0169-6149, doi: 10.1007\/s11084-006-9046-1<\/p>\n

      79 - Buson, L., Bettoni, D., Rampazzo, R., Marino, A., Galletta, G., C. Chiosi, R. Tantalo, Rich, M. (2006). Insight about induced SFR in the shell system of early-type galaxies from UV observations. In: Galaxy evolution across the Hubble time<\/em>. vol. 235, p. 108-109, Prague, Czech Republic, 14-17 August, 2006, doi: 10.1017\/S1743921306006703<\/p>\n

      78 - Galletta, G., Sergi V. (2005). Astrobiologia: Le frontiere della Vita. p. 1-313, Milano:Hoepli, ISBN: 8820334240<\/p>\n

      77 - Varela, J., Moles, M., M\u00e1rquez, I., Galletta, G., Masegosa, J., Bettoni, D. (2004). Properties of Isolated Disk Galaxies. Astronomy and Astrophysics<\/em>, vol. 420, p. 873-879, ISSN: 0004-6361, doi: 10.1051\/0004-6361:20035697<\/p>\n

      76 - Casasola, V., Bettoni, D., Galletta, G. (2004). The gas content of peculiar galaxies: strongly interacting systems. Astronomy and Astrophysics<\/em>, vol. 422, p. 941-950, ISSN: 0004-6361, doi: 10.1051\/0004-6361:20040283<\/p>\n

      75 - V. Casasola, Bettoni, D., Galletta, G. (2004). The gas content of peculiar galaxies: strongly interacting systems. In: The many scales of the Universe <\/em>- JENAM 2004, ed. J. C. Del Toro Iniesta, Kluwer.<\/p>\n

      74 - Casasola, V., Bettoni, D., Galletta, G. (2004). Gas content in 1038 interacting galaxies. CDS Strasbourg Database<\/em> J\/A+A\/422\/941<\/p>\n

      73 - Varela, J., Moles, M., M\u00e1rquez, I., Galletta, G., Masegosa, J., Bettoni, D. (2004). The properties of isolated spiral galaxies. CDS Strasbourg Database<\/em> J\/A+A\/420\/873<\/p>\n

      72 - Bettoni, D., Galletta, G., Garcia-Burillo, S. (2003). A new catalogue of ISM content of normal galaxies. Astronomy and Astrophysics<\/em>, vol. 405, p. 5-14, ISSN: 0004-6361, doi: 10.1051\/0004-6361:20030557<\/p>\n

      71 - M\u00e1rquez, I., Masegosa, J., Moles, M., Varela, J, Bettoni, D., Galletta, G. (2003). Isolated and mildly interacting spiral galaxies: rotation curves and metallicity. Astrophysics and Space Science<\/em>, vol. 284, p. 711-714, ISSN: 0004-640X, doi: 10.1023\/A:1024007500977<\/p>\n

      70 - Bettoni, D., Garcia-Burillo, S., Galletta, G., Casasola, V. (2003). Gas content in galaxies: peculiar vs. normal. In: Star and structure formation: from first light to the Milky Way<\/em>. August 18 \u2013 22, 2003<\/p>\n

      69 - Bettoni, D., Galletta, G., Garcia-Burillo, S. (2003). Catalogue of ISM content of normal galaxies. CDS Strasbourg Database<\/em> J\/A+A\/405\/5<\/p>\n

      68 - M\u00e1rquez, I., Masegosa, J., Moles, M., Varela, J., Bettoni, D., Galletta, G. (2002). Rotation curves and metallicity gradients from HII regions in spiral galaxies. Astronomy and Astrophysics<\/em>, vol. 393, p. 389-407, ISSN: 0004-6361, doi: 10.1051\/0004-6361:20021036<\/p>\n

      67 - M\u00e1rquez, I., Masegosa, J., Moles, M., Varela, J., Bettoni, D., Galletta, G. (2002). Rotation curves and metallicity gradients from HII regions in spiral galaxies. CDS Strasbourg Database<\/em>, J\/A+A\/393\/389<\/p>\n

      66 - Bettoni, D., Galletta, G. (2001). Radial velocities of giant M stars near the Ecliptic. Astronomy and Astrophysics<\/em>, vol. 368, p. 593-594, ISSN: 0004-6361<\/p>\n

      65 - Bettoni, D., Galletta, G., Garcia Burillo S., Rodriguez Franco A. (2001). The gas content of peculiar galaxies: counterrotators and polar rings. Astronomy and Astrophysics<\/em>, vol. 374, p. 421-434, ISSN: 0004-6361, doi: 10.1051\/0004-6361:20010717<\/p>\n

      64 - Bettoni, D., Galletta, G., Francisco Prada (2001). The visible environment of galaxies with counterrotation. Astronomy and Astrophysics<\/em>, vol. 374, p. 83-91, ISSN: 0004-6361, doi: 10.1051\/0004-6361:20010691<\/p>\n

      63 - Galletta, G., Pignatelli E. (2001). Anatomy of Giant Spiral galaxies. In: Galaxy disks and disk galaxies, Astron. Society of Pacific Conference Series.<\/em> vol. 230, p. 563-565<\/p>\n

      62 - Bettoni, D., Galletta, G., Moles, M., Varela, J., M\u00e1rquez, I., Masegosa, J. (2001). Kinematical properties of a sample of isolated disk galaxies. In: Galaxy disks and disk galaxies, Astron. <\/em>Society of Pacific Conference Series.<\/em> vol. 230, p. 271-272<\/p>\n

      61 \u2013 Sergi, V., Celotti, L., Galletta, G., Turatto, M. (2001). Nearby supernova explosions and radiation effects on the Earth's environment. In: ESA Special Publications<\/em>. vol. 496, p. 409-412<\/p>\n

      60 - Bettoni, D., Galletta, G. (2001). Stellar kinematical of two polar ring spirals. In: Galaxy disks and disk galaxies, Astron. Society of Pacific Conference Series.<\/em> vol. 230, p. 433-434<\/p>\n

      59 \u2013 Guarise, G., Galletta, G., Secco, L. (2001). The cut-off radius and the scale length induced by the dark matter halo. In: JENAM 2001<\/em>. vol. 18, p. 202, Monaco, 10-15 September 2001<\/p>\n

      58 \u2013 Cappellaro, E., Turatto, M., Pizzella, A., Corsini, E.M., Galletta, G. (2000). Supernova 2000C in NGC 2415. Circular - Central Bureau For Astronomical Telegrams, International Astronomical Union<\/em>, vol. N. 7352, p. 1, ISSN: 0081-0304<\/p>\n

      57 \u2013 Turatto, M., Galletta, G., Cappellaro, E. (2000). Supernova 2000E in NGC 6951. Circular - Central Bureau For Astronomical Telegrams, International Astronomical Union<\/em>, vol. n. 7351, p. 1, ISSN: 0081-0304<\/p>\n

      56 - Bettoni, D., Garcia-Burillo, S., Rodriguez-Franco, A., Galletta, G. (2000). Evolution of Gas Accreting Galaxies: Detection of Molecular Gas. In: Dynamics of galaxies: from the early universe to the present<\/em>, ASP Conf. Series. vol. 197, p. 129<\/p>\n

      55 - Bettoni, D., Galletta, G., Prada, F. (2000). The Visible Environment of Gas Accreting Galaxies. In: Dynamics of galaxies: from the early universe to the present<\/em>, ASP Conf. Series. vol. 197, p. 125<\/p>\n

      54 \u2013 Pignatelli, E., Galletta, G. (1999). Multi-component models for disk galaxies. I. Stellar rotation and anisotropy. Astronomy and Astrophysics<\/em>, vol. 349, p. 369-380, ISSN: 0004-6361<\/p>\n

      53 - Bettoni, D., Galletta, G. (1997). A survey of the stellar rotation in barred galaxies. Astronomy and Astrophysics<\/em>, vol. 124, p. 61-74, ISSN: 0004-6361, doi: 10.1051\/aas:1997180<\/p>\n

      52 - Galletta, G., Sage, L. J., Sparke, L. S. (1997). Molecular gas in polar-ring galaxies. Monthly Notices of the Royal Astronomical Society<\/em>, vol. 284, p. 773-784, ISSN: 0035-8711<\/p>\n

      51 \u2013 Brocca, C., Bettoni, D., Galletta, G. (1997). The visible environment of polar ring galaxies. Astronomy and Astrophysics<\/em>, vol. 326, p. 907-914, ISSN: 0004-6361<\/p>\n

      50 \u2013 Pignatelli, E, Galletta, G. (1997). Dynamical models of S0 and Sa galaxies. In: Dark and visible matter in galaxies<\/em>; Astron. Society of Pacific Conf. Series. vol. 117, p. 136<\/p>\n

      49 - Bettoni, D., Galletta, G. (1997). A survey of the stellar rotation in barred galaxies. CDS Strasbourg Database<\/em> J\/A+AS\/124\/61<\/p>\n

      48 - Galletta, G. (1996). Counterrotation and Barred Galaxies. In: Barred galaxies<\/em>. Astronomical Society of the Pacific Conference Series. vol. 91, p. 429-439<\/p>\n

      47 - Bettoni, D., Fasano, G., Galletta, G. (1996). Photometrical Mapping in Barred Galaxies: Analysis of the Different Components. In: Barred galaxies<\/em>. Astronomical Society of the Pacific Conference Series. vol. 91, p. 97-98<\/p>\n

      46 - Galletta, G., Tomadini, L. (1996). Tethys and Nemesis: astronomical problems. Testing an astronomical explanation of mass extinctions. In: Shallow Tethis 4<\/em> - Supplemento Annali Musei Civici di Rovereto. 8-11 september 1994, vol. 11, p. 7-18<\/p>\n

      45 \u2013 Ciri, R, Bettoni, D., Galletta, G. (1995). A Massive Counter-Rotating Gas Disk in a Spiral Galaxy. Nature<\/em>, vol. 375, p. 661-663, ISSN: 0028-0836<\/p>\n

      44 \u2013 Savoldini, M., Galletta, G. (1994). CO depletion in the protoplanetary disk of Beta Pictoris. Astronomy and Astrophysics<\/em>, vol. 285, p. 467-468, ISSN: 0004-6361<\/p>\n

      43 - Sage, L. J., Galletta, G. (1994). Counter-rotating molecular gas in NGC 4546. The Astronomical Jornal<\/em>, vol. 108, p. 1633-1637, ISSN: 0004-6256, doi: 10.1086\/117184<\/p>\n

      42 - Bettoni, D., Galletta, G. (1994). Study of NGC 4442: A link between bars and boxy bulges. Astronomy and Astrophysics<\/em>, vol. 281, p. 1-6, ISSN: 0004-6361<\/p>\n

      41 - Bettoni, D., Galletta, G., Sage, L. J. (1993). Detection of filaments of ionized gas in NGC 4684. Astronomy and Astrophysics<\/em>, vol. 280, p. 121-127, ISSN: 0004-6361<\/p>\n

      40 - Sage, L. J., Galletta, G. (1993). Evolution in Dust Lane Ellipticals: Detection of Accreted Molecular Gas. The Astrophysical Jornal<\/em>, vol. 419, p. 544-560, ISSN: 0004-637X, doi: 10.1086\/173507<\/p>\n

      39 \u2013 Arnaboldi, M., Galletta, G. (1993). Kinematical models of warped disks. Astronomy and Astrophysics<\/em>, vol. 268, p. 411-417, ISSN: 0004-6361<\/p>\n

      38 \u2013 Feretti, L., Bettoni, D., Galletta, G., Giovannini, G. (1993). Radio Emission of Galaxies with Kinematical Evidence of Merger. In: Structure, Dynamics and Chemical Evolution of Elliptical Galaxies<\/em>. 25-30 May, 1992, p. 703<\/p>\n

      37 \u2013 Magrelli, G., Bettoni, D., Galletta, G. (1992). Face-on disc galaxies. Monthly Notices of the Royal Astronomical Society<\/em>, vol. 256, p. 500-514, ISSN: 0035-8711<\/p>\n

      36 - Bertola, F., Galletta, G., Zeilinger, W. W. (1992). The Minor-Axis Dust Lane Elliptical NGC1947. Astronomy and Astrophysics<\/em>, vol. 254, p. 89-92, ISSN: 0004-6361<\/p>\n

      35 \u2013 Sage, L. J., Galletta, G. (1992). Dynamically Decoupled Gas and Stars in Galaxies. In: American Astronomical Society<\/em>, 181st AAS Meeting. vol. 24, p. 1123<\/p>\n

      34 - Bettoni, D., Fasano, G., Galletta, G. (1991). Erratum: \"NGC 2217, A Case of Apparent Counterrotation\". The Astronomical Jornal<\/em>, vol. 101, p. 1089, ISSN: 0004-6256<\/p>\n

      33 - Bettoni, D., Galletta, G., Oosterloo, T. (1991). Stellar and gas kinematics of NGC 4546, the double-spin SBO. Monthly Notices of the Royal Astronomical Society<\/em>, vol. 248, p. 544-554, ISSN: 0035-8711<\/p>\n

      32 - BUSON L., Galletta, G., SAGLIA R. P., Zeilinger, W. W. (1991). Supermassive disk galaxies. The Messenger<\/em>, vol. 63, p. 50-52, ISSN: 0722-6691<\/p>\n

      31 - Galletta, G., Bettoni, D. (1991). Dynamics and Evolution of Acquired Gaseous Discs. In: Dynamics of disc galaxies: Varberg Castle Sweden. p. 317-322<\/p>\n

      30 - Galletta, G. (1991). Warps in S0s - Observations Versus Theories. In: Warped disks and inclined rings around galaxies<\/em>. p. 207-212<\/p>\n

      29 - Bettoni, D., Fasano, G., Galletta, G. (1990). NGC 2217, a case of apparent counterrotation. The Astronomical Jornal<\/em>, vol. 99, p. 1789-1797, 2161, ISSN: 0004-6256<\/p>\n

      28 - Zeilinger, W. W., Galletta, G., Madsen, C. (1990). NGC5084 - a Massive Disk Galaxy with a Tilted Ring. Monthly Notices of the Royal Astronomical Society<\/em>, vol. 246, p. 324-331, ISSN: 0035-8711<\/p>\n

      27 - Zeilinger, W. W., Bertola, F., Galletta, G. (1990). Elliptical Galaxies with Dust Lanes. In: Dusty objects in the Universe<\/em>. p. 227-232<\/p>\n

      26 - Galletta, G., Bettoni, D., Oosterloo, T., Fasano, G. (1990). Hidden interaction in SBO galaxies. In: NASA, Marshall Space Flight Center, Paired and interacting galaxies: International Astronomical Union Colloquium 124.<\/em> vol. 124, p. 159-164, NASA<\/p>\n

      25 - Bertola, F., Galletta, G., Kotanyi, C., Zeilinger, W. W. (1988). A study of major-axis dust-lane ellipticals. Monthly Notices of the Royal Astronomical Society<\/em>, vol. 234, p. 733-744, ISSN: 0035-8711<\/p>\n

      24 - Bertola, F., Galletta, G., Capaccioli, M., Rampazzo, R. (1988). Minor-axis kinematics for seven elliptical galaxies. Astronomy and Astrophysics<\/em>, vol. 192, p. 24-28, ISSN: 0004-6361<\/p>\n

      23 - Bettoni, D., Galletta, G. (1988). New results about SBO galaxies. The Messenger<\/em>, vol. 54, p. 51-56, ISSN: 0722-6691<\/p>\n

      22 - Bettoni, D., Galletta, G., Vallenari, A. (1988). Stellar kinematics in SB0 galaxies - NGC 2983. Astronomy and Astrophysics<\/em>, vol. 197, p. 69-74, ISSN: 0004-6361<\/p>\n

      21 - Bettoni, D., Galletta, G. (1988). Stellar kinematics in the SB0 galaxy NGC 6684. Astronomy and Astrophysics<\/em>, vol. 190, p. 25-60, ISSN: 0004-6361<\/p>\n

      20 - Galletta, G. (1987). Detection of retrograde gas streaming in the SB0 galaxy NGC 4546. The Astrophysical Jornal<\/em>, vol. 318, p. 531-535, ISSN: 0004-637X<\/p>\n

      19 - VARNAS S. R., Bertola, F., Galletta, G., Freeman, K. C., Carter, D. (1987). NGC 5266 - an elliptical galaxy with a dust ring. The Astrophysical Jornal<\/em>, vol. 313, p. 69-88, ISSN: 0004-637X, doi: 10.1086\/164949<\/p>\n

      18 - Bettoni, D., Galletta, G. (1987). Velocity and velocity dispersion fields of NGC 6684 - an SBO galaxy with a ring. The Messenger<\/em>, vol. 48, p. 13-16, ISSN: 0722-6691<\/p>\n

      17 - Galletta, G. (1986). CCD observations of supernova 1986G in CEN A. The Messenger<\/em>, vol. 44, p. 2, ISSN: 0722-6691<\/p>\n

      16 - Galletta, G. (1986). The unusual barred SO galaxy NGC 4546. The Messenger<\/em>, vol. 45, p. 18-20, ISSN: 0722-6691<\/p>\n

      15 - Bertola, F., Galletta, G., Zeilinger, W. W. (1985). Warped dust lanes in elliptical galaxies - Transient or stationary phenomena?. The Astrophysical Jornal<\/em>, vol. 292, p. L51-L55, ISSN: 0004-637X<\/p>\n

      14 - Bertola, F., Casini C., Bettoni, D., Galletta, G., Noreau L., Kronberg P. P. (1984). NGC 3448 revisited - A combined optical, radio, and UV investigation. The Astronomical Jornal<\/em>, vol. 89, p. 350-355, ISSN: 0004-6256<\/p>\n

      13 - Galletta, G. (1984). Observable properties of non-axisymmetric galaxies. II - Photometric parameters. Astrophysics and Space Science<\/em>, vol. 103, p. 39-54, ISSN: 0004-640X, doi: 10.1007\/BF00650042<\/p>\n

      12 - Galletta, G. (1983). Observable properties of non-axisymmetric galaxies. I Geometrical parameters. Astrophysics and Space Science<\/em>, vol. 92, p. 335-346, ISSN: 0004-640X<\/p>\n

      11 \u2013 Hayli, A., Desolneux, N., Galletta, G. (1983). Periodic orbits in a three-dimensional potential. Astronomy and Astrophysics<\/em>, vol. 122, p. 137-142, ISSN: 0004-6361<\/p>\n

      10 \u2013 Noreau, L., Kronberg, P. P., Bertola, F., Bettoni, D., Galletta, G., Casini C. (1983). A Multi-Frequency Study of The Irregular Galaxy NGC 3448. In: Bulletin of the American Astronomical Society. Bulletin of the American Astronomical Society<\/em>, vol. 15, p. 933, ISSN: 0002-7537, Las Vegas<\/p>\n

      9 - Bettoni, D., Galletta, G. (1982). Accurate optical positions of M 82 knots. Astronomy and Astrophysics<\/em>, vol. 113, p. 344-347, ISSN: 0004-6361<\/p>\n

      8 - Galletta, G., Recilla-Cruz E. (1982). The large scale trend of rotation curves in the spiral galaxies NGC 1068 and NGC 3310. Astronomy and Astrophysics<\/em>, vol. 112, p. 361-365, ISSN: 0004-6361<\/p>\n

      7 - Benacchio, L., Galletta, G. (1981). UV observation of the nucleus of NGC 3077. The Astrophysical Jornal<\/em>, vol. 243, p. L65-L68, ISSN: 0004-637X, doi: 10.1086\/183444<\/p>\n

      6 - Galletta, G. (1980). A correlation between isophotal twisting and flattening in elliptical galaxies. Astronomy and Astrophysics<\/em>, vol. 81, p. 179-181, ISSN: 0004-6361<\/p>\n

      5 - Benacchio, L., Galletta, G. (1980). Triaxiality in elliptical galaxies. Monthly Notices of the Royal Astronomical Society<\/em>, vol. 193, p. 885-894, ISSN: 0035-8711<\/p>\n

      4 - Bertola, F., Galletta, G. (1979). Ellipticity and twisting of isophotes in elliptical galaxies. Astronomy and Astrophysics<\/em>, vol. 77, p. 363-365, ISSN: 0004-6361<\/p>\n

      3 - Bertola, F., Galletta, G. (1978). A new type of galaxy with prolate structure. The Astrophysical Jornal<\/em>, vol. 226, p. L115-L118, ISSN: 0004-637X, doi: 10.1086\/182844<\/p>\n

      2 - Bertola, F., Galletta, G. (1978). Accurate Positions of Faint Optical Objects in the Fields of Radiosources: I. The Coma Cluster Field. Astronomy and Astrophysics<\/em> Supplement Series<\/em>, vol. 34, p. 267-277, ISSN: 0365-0138<\/p>\n

      1 - Bertola, F., Galletta, G. (1978). Accurate Positions of Faint Optical Objects in the Fields of Radiosources: II. The Perseus Cluster Field. Astronomy and Astrophysics<\/em> Supplement Series<\/em>, vol. 34, p. 279-284, ISSN: 0365-0138<\/p>\n<\/div>\n <\/div>\r\n <\/div>\r\n\r\n\r\n\r\n <\/div>\n\r\n\r\n

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