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A 500 kpc HI Tail of the Virgo Pair NGC4532/DDO137 Detected by ALFALFA

Published online by Cambridge University Press:  01 June 2007

Rebecca A. Koopmann
Rebecca A. Koopmann*
Affiliation:
Department of Physics and Astronomy, Union College, Schenectady, NY 12308, email: [email protected] National Astronomy and Ionosphere Center†, Space Sciences Building, Cornell University, Ithaca NY 14853
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Abstract

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HI observations of the Virgo Cluster pair NGC 4532/DDO 137, conducted as part of the Arecibo Legacy Fast ALFA Survey, reveal an HI feature extending ~500kpc to the southwest. The structure has a total mass of up to 7 x 108M⊙, equivalent to 10% of the pair HI mass. Optical R imaging reveals no counterparts to a level of 26.5 mag arcsec−2. The structure is likely the result of galaxy harassment.

Keywords

galaxies: dwarfgalaxies: evolutiongalaxies: formationgalaxies: clusters: Virgo
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S244: Dark Galaxies and Lost Baryons , June 2007 , pp. 362 - 363
Copyright
Copyright © International Astronomical Union 2008

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