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HI gas disks in elliptical galaxies

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arxiv astro-ph/0011399 v1 pith:DBFOFXD7 submitted 2000-11-22 astro-ph

HI gas disks in elliptical galaxies

E.M. Sadler (1) , T. Oosterloo (2) , R. Morganti (2) ((1) University of Sydney , (2) ASTRON , Dwingeloo (NL)) This is my paper
classification astro-ph
keywords disksgalaxiesonlysuggestall-skybecausebiasedboxy
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We discuss a class of low-luminosity E/S0 galaxies which have both HI disks and (in contrast to more luminous E/S0s with HI) ongoing star formation. We suggest that such objects are common, but that only a few are known at present because optical magnitude-limited galaxy catalogues are biased against them. The HI Parkes All-Sky Survey (HIPASS) should eventually detect many more. We suggest that `boxy' and `disky' ellipticals are distinct not only in their structure and kinematics, but in their star-formation history.

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