NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-05-20 T21:07:16 PDT
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For refcode 2005A&A...429..439G:
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Copyright by European Southern Observatory (ESO). Reproduced by permission
2005A&A...429..439G Completing H I observations of galaxies in the Virgo cluster G. Gavazzi, A. Boselli, W. van Driel and K. O'Neil Received 16 July 2004 / Accepted 2 September 2004 High sensitivity (rms noise ~ 0.5 mJy) 21-cm H I line observations were made of 33 galaxies in the Virgo cluster, using the refurbished Arecibo telescope, which resulted in the detection of 12 objects. These data, combined with the measurements available from the literature, provide the first set of H I data that is complete for all 355 late-type (Sa-Im-BCD) galaxies in the Virgo cluster with m_p_ <=q 18.0 mag. The Virgo cluster H I mass function (HIMF) that was derived for this optically selected galaxy sample is in agreement with the HIMF derived for the Virgo cluster from the blind HIJASS H I survey and is inconsistent with the Field HIMF. This indicates that both in this rich cluster and in the general field, neutral hydrogen is primarily associated with late-type galaxies, with marginal contributions from early-type galaxies and isolated H I clouds. The inconsistency between the cluster and the field HIMF derives primarily from the difference in the optical luminosity function of late-type galaxies in the two environments, combined with the HI deficiency that is known to occur in galaxies in rich clusters. Keywords: galaxies: distances and redshifts, galaxies: general, galaxies: ISM, galaxies: clusters: individual Virgo, radio lines: galaxies
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