TY - JOUR
T1 - HI content and other structural properties of galaxies in the Virgo cluster from the Arecibo Legacy Fast ALFA Survey
AU - Gavazzi, G.
AU - Giovanelli, R.
AU - Haynes, M. P.
AU - Fabello, S.
AU - Fumagalli, M.
AU - Kent, B. R.
AU - Koopmann, R. A.
AU - Brosch, N.
AU - Hoffman, G. L.
AU - Salzer, J. J.
AU - Boselli, A.
PY - 2008/4
Y1 - 2008/4
N2 - We report the results of an HI blind survey of 80 deg of the Virgo cluster, based on the 08° 16° strip of ALFALFA, the Arecibo Legacy Fast ALFA Survey. 187 HI sources of high significance are found providing a complete census of HI sources in this region of the Virgo cluster ( km s) with . 156/187 (83%) sources are identified with optical galaxies from the Virgo Cluster Catalogue (Binggeli et al. 1985, AJ, 90, 1681), all but 8 with late-type galaxies. Ten sources are not associated with optical galaxies and were found to correspond to tidally-disrupted systems (see Kent et al. 2007, ApJ, 665, L15; and Haynes et al. 2007, ApJ, 665, L19). The remaining 21 (11%) are associated with galaxies that are not listed in the Virgo Cluster Catalogue. For all sources with an optical counterpart in the Sloan Digital Sky Survey, we analyzed -band SDSS plates to measure optical structural parameters. We find that in the Virgo cluster: i) HI inhabits galaxies that are structurally similar to ordinary late-type galaxies; ii) their HI content can be predicted from their optical luminosity; iii) low surface brightness galaxies have low optical luminosity and contain small quantities of neutral hydrogen; iv) low surface brightness, massive Malin1 type galaxies are comfortably rare objects (less than 0.5%); v) there are no "dark-galaxies" with HI masses ; vi) less than 1% of early-type galaxies contain neutral hydrogen with (di Serego Alighieri et al. 2007, A&A, 474, 851).
AB - We report the results of an HI blind survey of 80 deg of the Virgo cluster, based on the 08° 16° strip of ALFALFA, the Arecibo Legacy Fast ALFA Survey. 187 HI sources of high significance are found providing a complete census of HI sources in this region of the Virgo cluster ( km s) with . 156/187 (83%) sources are identified with optical galaxies from the Virgo Cluster Catalogue (Binggeli et al. 1985, AJ, 90, 1681), all but 8 with late-type galaxies. Ten sources are not associated with optical galaxies and were found to correspond to tidally-disrupted systems (see Kent et al. 2007, ApJ, 665, L15; and Haynes et al. 2007, ApJ, 665, L19). The remaining 21 (11%) are associated with galaxies that are not listed in the Virgo Cluster Catalogue. For all sources with an optical counterpart in the Sloan Digital Sky Survey, we analyzed -band SDSS plates to measure optical structural parameters. We find that in the Virgo cluster: i) HI inhabits galaxies that are structurally similar to ordinary late-type galaxies; ii) their HI content can be predicted from their optical luminosity; iii) low surface brightness galaxies have low optical luminosity and contain small quantities of neutral hydrogen; iv) low surface brightness, massive Malin1 type galaxies are comfortably rare objects (less than 0.5%); v) there are no "dark-galaxies" with HI masses ; vi) less than 1% of early-type galaxies contain neutral hydrogen with (di Serego Alighieri et al. 2007, A&A, 474, 851).
KW - Galaxies: ISM
KW - Galaxies: clusters: individual: Virgo
KW - Galaxies: evolution
KW - galaxies: fundamental parameters
UR - http://www.scopus.com/inward/record.url?scp=42149181236&partnerID=8YFLogxK
U2 - 10.1051/0004-6361:200809382
DO - 10.1051/0004-6361:200809382
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AN - SCOPUS:42149181236
SN - 0004-6361
VL - 482
SP - 43
EP - 52
JO - Astronomy and Astrophysics
JF - Astronomy and Astrophysics
IS - 1
ER -