Laura Silva | Istituto Nazionale di Astrofisica (original) (raw)
Papers by Laura Silva
International Journal of Astrobiology, 2016
In an effort to derive temperature-based criteria of habitability for multicellular life, we inve... more In an effort to derive temperature-based criteria of habitability for multicellular life, we investigated the thermal limits of terrestrial poikilotherms, i.e. organisms whose body temperature and the functioning of all vital processes is directly affected by the ambient temperature. Multicellular poikilotherms are the most common and evolutionarily ancient form of complex life on earth. The thermal limits for the active metabolism and reproduction of multicellular poikilotherms on earth are approximately bracketed by the temperature interval 0°C ≤ T ≤ 50°C. The same interval applies to the photosynthetic production of oxygen, an essential ingredient of complex life, and for the generation of atmospheric biosignatures observable in exoplanets. Analysis of the main mechanisms responsible for the thermal thresholds of terrestrial life suggests that the same mechanisms would apply to other forms of chemical life. We therefore propose a habitability index for complex life,h050, represen...
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The Astrophysical Journal, 2013
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Astronomy & Astrophysics, 2004
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AIP Conference Proceedings, 2004
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Proceedings of the International Astronomical Union, 2006
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Multiwavelength AGN Surveys, 2004
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The Mass of Galaxies at Low and High Redshift
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The Astrophysical Journal, 2012
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The Astrophysical Journal, 2010
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Monthly Notices of the Royal Astronomical Society, 2008
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Monthly Notices of the Royal Astronomical Society, 2012
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Monthly Notices of the Royal Astronomical Society, 2001
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Monthly Notices of the Royal Astronomical Society, 2003
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Experimental Astronomy, 2008
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Astrophysics and Space Science, 2004
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Astronomy & Astrophysics, 2010
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Astronomy and Astrophysics, 2010
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Arxiv preprint astro-ph/9912282
arXiv:astro-ph/9912282v1 14 Dec 199 9 A&A manuscript no. (will be inserted by hand later) Your th... more arXiv:astro-ph/9912282v1 14 Dec 199 9 A&A manuscript no. (will be inserted by hand later) Your thesaurus codes are: 03(11.01.2; 11.17.3; 12.03.1; 13.18.1; 13.20.1) ASTRONOMY AND ASTROPHYSICS An evolutionary model for GHz Peaked Spectrum Sources Predictions for high frequency surveys G. De Zotti1, GL Granato1, L. Silva2, D. Maino2, and L. Danese2 1 Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, I-35122 Padova ...
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Mh
Abstract. At variance with most semi-analytic models, in the Anti-hierarchical Baryon Collapse sc... more Abstract. At variance with most semi-analytic models, in the Anti-hierarchical Baryon Collapse scenario (Granato et al. 2001, 2004) the main driver of the galaxy formation and evolution is not the merging sequence but are baryon processes. This approach emphasizes, still in the framework of the hierarchical clustering paradigm for dark matter halos, feedback processes from supernova explosions and from active nuclei, that tie together star formation in spheroidal galaxies and the growth of black holes at their ...
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Arxiv preprint astro-ph/0112395, Dec 17, 2001
Abstract: In view of the extensive evidence of tight inter-relationships between spheroidal galax... more Abstract: In view of the extensive evidence of tight inter-relationships between spheroidal galaxies (and galactic bulges) with massive black holes hosted at their centers, a consistent model must deal jointly with the evolution of the two components. We describe one such model, which successfully accounts for the local luminosity function of spheroidal galaxies, for their photometric and chemical properties, for deep galaxy counts in different wavebands, including those in the (sub)-mm region which proved to be critical for current semi-analytic ...
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International Journal of Astrobiology, 2016
In an effort to derive temperature-based criteria of habitability for multicellular life, we inve... more In an effort to derive temperature-based criteria of habitability for multicellular life, we investigated the thermal limits of terrestrial poikilotherms, i.e. organisms whose body temperature and the functioning of all vital processes is directly affected by the ambient temperature. Multicellular poikilotherms are the most common and evolutionarily ancient form of complex life on earth. The thermal limits for the active metabolism and reproduction of multicellular poikilotherms on earth are approximately bracketed by the temperature interval 0°C ≤ T ≤ 50°C. The same interval applies to the photosynthetic production of oxygen, an essential ingredient of complex life, and for the generation of atmospheric biosignatures observable in exoplanets. Analysis of the main mechanisms responsible for the thermal thresholds of terrestrial life suggests that the same mechanisms would apply to other forms of chemical life. We therefore propose a habitability index for complex life,h050, represen...
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The Astrophysical Journal, 2013
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Astronomy & Astrophysics, 2004
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AIP Conference Proceedings, 2004
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Proceedings of the International Astronomical Union, 2006
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Multiwavelength AGN Surveys, 2004
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The Mass of Galaxies at Low and High Redshift
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The Astrophysical Journal, 2012
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The Astrophysical Journal, 2010
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Monthly Notices of the Royal Astronomical Society, 2008
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Monthly Notices of the Royal Astronomical Society, 2012
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Monthly Notices of the Royal Astronomical Society, 2001
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Monthly Notices of the Royal Astronomical Society, 2003
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Experimental Astronomy, 2008
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Astrophysics and Space Science, 2004
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Astronomy & Astrophysics, 2010
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Astronomy and Astrophysics, 2010
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Arxiv preprint astro-ph/9912282
arXiv:astro-ph/9912282v1 14 Dec 199 9 A&A manuscript no. (will be inserted by hand later) Your th... more arXiv:astro-ph/9912282v1 14 Dec 199 9 A&A manuscript no. (will be inserted by hand later) Your thesaurus codes are: 03(11.01.2; 11.17.3; 12.03.1; 13.18.1; 13.20.1) ASTRONOMY AND ASTROPHYSICS An evolutionary model for GHz Peaked Spectrum Sources Predictions for high frequency surveys G. De Zotti1, GL Granato1, L. Silva2, D. Maino2, and L. Danese2 1 Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, I-35122 Padova ...
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Mh
Abstract. At variance with most semi-analytic models, in the Anti-hierarchical Baryon Collapse sc... more Abstract. At variance with most semi-analytic models, in the Anti-hierarchical Baryon Collapse scenario (Granato et al. 2001, 2004) the main driver of the galaxy formation and evolution is not the merging sequence but are baryon processes. This approach emphasizes, still in the framework of the hierarchical clustering paradigm for dark matter halos, feedback processes from supernova explosions and from active nuclei, that tie together star formation in spheroidal galaxies and the growth of black holes at their ...
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Arxiv preprint astro-ph/0112395, Dec 17, 2001
Abstract: In view of the extensive evidence of tight inter-relationships between spheroidal galax... more Abstract: In view of the extensive evidence of tight inter-relationships between spheroidal galaxies (and galactic bulges) with massive black holes hosted at their centers, a consistent model must deal jointly with the evolution of the two components. We describe one such model, which successfully accounts for the local luminosity function of spheroidal galaxies, for their photometric and chemical properties, for deep galaxy counts in different wavebands, including those in the (sub)-mm region which proved to be critical for current semi-analytic ...
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