Laura Silva | Istituto Nazionale di Astrofisica (original) (raw)

Papers by Laura Silva

Research paper thumbnail of From climate models to planetary habitability: temperature constraints for complex life

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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Research paper thumbnail of The Habitable Zone of Earth-Like Planets with Different Levels of Atmospheric Pressure

The Astrophysical Journal, 2013

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Research paper thumbnail of Modelling the spectral energy distribution of galaxies

Astronomy & Astrophysics, 2004

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Research paper thumbnail of The Sunyaev-Zeldovich effect as a probe of the galaxy formation process

AIP Conference Proceedings, 2004

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Research paper thumbnail of Early Type Galaxies in the Mid Infrared: a new flavor to their stellar populations

Proceedings of the International Astronomical Union, 2006

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Research paper thumbnail of A Physical Model for the Joint Evolution of Qsos and Spheroids

Multiwavelength AGN Surveys, 2004

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Research paper thumbnail of Spheroidal Galaxies/QSOs Connection

The Mass of Galaxies at Low and High Redshift

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Research paper thumbnail of The Complex Physics of Dusty Star-Forming Galaxies at High Redshifts as Revealed Byherschelandspitzer

The Astrophysical Journal, 2012

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Research paper thumbnail of Unusual Pah Emission in Nearby Early-Type Galaxies: A Signature of an Intermediate-Age Stellar Population?

The Astrophysical Journal, 2010

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Research paper thumbnail of Galaxy evolution in the infrared: comparison of a hierarchical galaxy formation model with Spitzer data

Monthly Notices of the Royal Astronomical Society, 2008

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Research paper thumbnail of Cosmic star formation rate: a theoretical approach

Monthly Notices of the Royal Astronomical Society, 2012

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Research paper thumbnail of Joint formation of QSOs and spheroids: QSOs as clocks of star formation in spheroids

Monthly Notices of the Royal Astronomical Society, 2001

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Research paper thumbnail of Predictions for statistical properties of forming spheroidal galaxies

Monthly Notices of the Royal Astronomical Society, 2003

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Research paper thumbnail of The molecular hydrogen explorer H2EX

Experimental Astronomy, 2008

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Research paper thumbnail of Observational Tests of the Galaxy Formation Process

Astrophysics and Space Science, 2004

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Research paper thumbnail of The chemical evolution of elliptical galaxies with stellar and QSO dust production

Astronomy & Astrophysics, 2010

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Research paper thumbnail of The dust content of high-zsubmillimeter galaxies revealed byHerschel

Astronomy and Astrophysics, 2010

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Research paper thumbnail of 1 Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, I-35122 Padova, Italy 2 SISSA, International School for Advanced Studies, Via Beirut 2-4, I-34014 Trieste, Italy Received 19 July 1999

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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Research paper thumbnail of Ô Ý× Ð ÑÓ Ð ÓÖ Ó¹ ÚÓÐÙØ ÓÒ Ó ÉËÇ× Ò Ó Ø Ö× Ô ÖÓ Ð Ó× Ø×

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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Research paper thumbnail of QSOs and Spheroidal Galaxies

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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Research paper thumbnail of From climate models to planetary habitability: temperature constraints for complex life

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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Research paper thumbnail of The Habitable Zone of Earth-Like Planets with Different Levels of Atmospheric Pressure

The Astrophysical Journal, 2013

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Research paper thumbnail of Modelling the spectral energy distribution of galaxies

Astronomy & Astrophysics, 2004

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Research paper thumbnail of The Sunyaev-Zeldovich effect as a probe of the galaxy formation process

AIP Conference Proceedings, 2004

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Research paper thumbnail of Early Type Galaxies in the Mid Infrared: a new flavor to their stellar populations

Proceedings of the International Astronomical Union, 2006

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Research paper thumbnail of A Physical Model for the Joint Evolution of Qsos and Spheroids

Multiwavelength AGN Surveys, 2004

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Research paper thumbnail of Spheroidal Galaxies/QSOs Connection

The Mass of Galaxies at Low and High Redshift

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Research paper thumbnail of The Complex Physics of Dusty Star-Forming Galaxies at High Redshifts as Revealed Byherschelandspitzer

The Astrophysical Journal, 2012

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Research paper thumbnail of Unusual Pah Emission in Nearby Early-Type Galaxies: A Signature of an Intermediate-Age Stellar Population?

The Astrophysical Journal, 2010

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Research paper thumbnail of Galaxy evolution in the infrared: comparison of a hierarchical galaxy formation model with Spitzer data

Monthly Notices of the Royal Astronomical Society, 2008

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Research paper thumbnail of Cosmic star formation rate: a theoretical approach

Monthly Notices of the Royal Astronomical Society, 2012

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Research paper thumbnail of Joint formation of QSOs and spheroids: QSOs as clocks of star formation in spheroids

Monthly Notices of the Royal Astronomical Society, 2001

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Research paper thumbnail of Predictions for statistical properties of forming spheroidal galaxies

Monthly Notices of the Royal Astronomical Society, 2003

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Research paper thumbnail of The molecular hydrogen explorer H2EX

Experimental Astronomy, 2008

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Research paper thumbnail of Observational Tests of the Galaxy Formation Process

Astrophysics and Space Science, 2004

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Research paper thumbnail of The chemical evolution of elliptical galaxies with stellar and QSO dust production

Astronomy & Astrophysics, 2010

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Research paper thumbnail of The dust content of high-zsubmillimeter galaxies revealed byHerschel

Astronomy and Astrophysics, 2010

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Research paper thumbnail of 1 Osservatorio Astronomico di Padova, Vicolo dell’Osservatorio 5, I-35122 Padova, Italy 2 SISSA, International School for Advanced Studies, Via Beirut 2-4, I-34014 Trieste, Italy Received 19 July 1999

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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Research paper thumbnail of Ô Ý× Ð ÑÓ Ð ÓÖ Ó¹ ÚÓÐÙØ ÓÒ Ó ÉËÇ× Ò Ó Ø Ö× Ô ÖÓ Ð Ó× Ø×

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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Research paper thumbnail of QSOs and Spheroidal Galaxies

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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