The Herschel Virgo Cluster Survey - VIII. The Bright Galaxy Sample


Por: Davies J.I., Bianchi S., Cortese L., Auld R., Baes M., Bendo G.J., Boselli A., Ciesla L., Clemens M., Corbelli E., De Looze I., Alighieri S.D.S., Fritz J., Gavazzi G., Pappalardo C., Grossi M., Hunt L.K., Madden S., Magrini L., Pohlen M., Smith M.W.L., Verstappen J., Vlahakis C.

Publicada: 1 ene 2012
Resumen:
We describe the Herschel Virgo Cluster Survey and the first data that cover the complete survey area (four 4 × 4 deg 2 regions). We use these data to measure and compare the global far-infrared properties of 78 optically bright galaxies that are selected at 500µm and detected in all five far-infrared bands. We show that our measurements and calibration are broadly consistent with previous data obtained by the IRAS, ISO, Spitzer and Planck. We use SPIRE and PACS photometry data to produce 100-, 160-, 250-, 350- and 500-µm cluster luminosity distributions. These luminosity distributions are not power laws, but 'peaked', with small numbers of both faint and bright galaxies. We measure a cluster 100-500µm far-infrared luminosity density of 1.6(7.0) ± 0.2 × 10 9 L ?Mpc -3. This compares to a cluster 0.4-2.5µm optical luminosity density of 5.0(20.0) × 10 9 L ?Mpc -3, some 3.2(2.9) times larger than the far-infrared. A 'typical' photon originates from an optical depth of 0.4 ± 0.1. Most of our sample galaxies are well fitted by a single modified blackbody (ß= 2), leading to a mean dust mass of log M Dust= 7.31 M ? and temperature of 20.0K. We also derive both stellar and atomic hydrogen masses from which we calculate mean values for the star-to-gas (atomic) and gas (atomic)-to-dust mass ratios of 15.1 and 58.2, respectively. Using our derived dust, atomic gas and stellar masses, we estimate cluster mass densities of 8.6(27.8) × 10 6, 4.6(13.9) × 10 8 and 7.8(29.7) × 10 9 M ?Mpc -3 for dust, atomic gas and stars, respectively. These values are higher than those derived for field galaxies by factors of 39(126), 6(18) and 34(129), respectively. In the above, the luminosity/mass densities are given using the whole sample with the values in brackets using just those galaxies that lie between 17 and 23 Mpc. We provide a data table of flux densities in all the Herschel bands for all 78 bright Virgo Cluster galaxies. © 2011 The Authors Monthly Notices of the Royal Astronomical Society © 2011 RAS.

Filiaciones:
Davies J.I.:
 School of Physics and Astronomy, Cardiff University, The Parade, Cardiff CF24 3AA, United Kingdom

Bianchi S.:
 INAF-Osservatorio Astrofisico di Arcetri, Largo Enrico Fermi 5, 50125 Firenze, Italy

Cortese L.:
 European Southern Observatory, Karl-Schwarzschild Strasse 2, 85748 Garching bei Muenchen, Germany

Auld R.:
 School of Physics and Astronomy, Cardiff University, The Parade, Cardiff CF24 3AA, United Kingdom

Baes M.:
 Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281 S9, B-9000 Gent, Belgium

Bendo G.J.:
 Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom

Boselli A.:
 Laboratoire D'Astrophysique de Marseille, UMR 6110 CNRS, 38 rue F. Joliot-Curie, F-13388 Marseille, France

Ciesla L.:
 Laboratoire D'Astrophysique de Marseille, UMR 6110 CNRS, 38 rue F. Joliot-Curie, F-13388 Marseille, France

Clemens M.:
 INAF-Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy

Corbelli E.:
 INAF-Osservatorio Astrofisico di Arcetri, Largo Enrico Fermi 5, 50125 Firenze, Italy

De Looze I.:
 Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281 S9, B-9000 Gent, Belgium

Alighieri S.D.S.:
 INAF-Osservatorio Astrofisico di Arcetri, Largo Enrico Fermi 5, 50125 Firenze, Italy

Fritz J.:
 Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281 S9, B-9000 Gent, Belgium

Gavazzi G.:
 Universita' di Milano-Bicocca, piazza della Scienza 3, 20100 Milano, Italy

Pappalardo C.:
 INAF-Osservatorio Astrofisico di Arcetri, Largo Enrico Fermi 5, 50125 Firenze, Italy

Grossi M.:
 CAAUL, Observatório Astronómico de Lisboa, Universidade de Lisboa, Tapada da Ajuda, 1349-018 Lisboa, Portugal

Hunt L.K.:
 INAF-Osservatorio Astrofisico di Arcetri, Largo Enrico Fermi 5, 50125 Firenze, Italy

Madden S.:
 Laboratoire AIM, CEA/DSM - CNRS - Université Paris Diderot, Irfu/Service, Paris, France

Magrini L.:
 INAF-Osservatorio Astrofisico di Arcetri, Largo Enrico Fermi 5, 50125 Firenze, Italy

Pohlen M.:
 School of Physics and Astronomy, Cardiff University, The Parade, Cardiff CF24 3AA, United Kingdom

Smith M.W.L.:
 School of Physics and Astronomy, Cardiff University, The Parade, Cardiff CF24 3AA, United Kingdom

Verstappen J.:
 Sterrenkundig Observatorium, Universiteit Gent, Krijgslaan 281 S9, B-9000 Gent, Belgium

Vlahakis C.:
 Departamento de Astronomia, Universidad de Chile, Casilla 36-D, Santiago, Chile
ISSN: 00358711
Editorial
WILEY-BLACKWELL, COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA, Reino Unido
Tipo de documento: Article
Volumen: 419 Número: 4
Páginas: 3505-3520
WOS Id: 000298920600060

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