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Date and Time of the Query: 2019-03-26 T07:17:13 PDT
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For refcode 2012MNRAS.419.3505D:
Retrieve 78 NED objects in this reference.
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Copyright by Royal Astronomical Society. 2012MNRAS.419.3505D The Herschel Virgo Cluster Survey - VIII. The Bright Galaxy Sample 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. Di Serego; 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. Abstract. We describe the Herschel Virgo Cluster Survey and the first data that cover the complete survey area (four 4 x 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 500 micron 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-micron 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 100-500 micron far-infrared luminosity density of 1.6(7.0) +/- 0.2 x 10^9^ L_sun_ Mpc^-3^. This compares to a cluster 0.4-2.5 micron optical luminosity density of 5.0(20.0) x 10^9^ L_sun_ 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 ({beta}= 2), leading to a mean dust mass of log M_Dust_= 7.31 M_sun_ and temperature of 20.0 K. 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) x 10^6^, 4.6(13.9) x 10^8^ and 7.8(29.7) x 10^9^ M_sun_ 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. Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA. Key words: galaxies: clusters: individual: Virgo, galaxies: general, galaxies: ISM
Retrieve 78 NED objects in this reference.
Please click here for ADS abstract

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