HI Clouds, Debris, and Galactic HI Toward the Virgo Region with the Arecibo Legacy Fast ALFA Survey

Details HI Clouds, Debris, and Galactic HI Toward the Virgo Region with the Arecibo Legacy Fast ALFA Survey HI Clouds, Debris, and Galactic HI Toward the Virgo Region with the Arecibo Legacy Fast ALFA Survey

Aug 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc.1035..225k&link_type=abstract

THE EVOLUTION OF GALAXIES THROUGH THE NEUTRAL HYDROGEN WINDOW. AIP Conference Proceedings, Volume 1035, pp. 225-228 (2008).

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Circumstellar Shells, Clouds, And Expanding Envelopes, Circumstellar Masers, Radio Telescopes And Instrumentation, Heterodyne Receivers, Astronomical Catalogs, Atlases, Sky Surveys, Databases, Retrieval Systems, Archives, Etc., Characteristics And Properties Of The Milky Way Galaxy

Scientific paper

A sample of HI data from the Arecibo Legacy Fast ALFA survey is described. Several unusual HI candidates have been detected in the vicinity of the Virgo Cluster, all at czsolar<3000 km s-1. Assuming a distance to Virgo of 16.7 Mpc, the minimum detectable HI mass is of order 2×107Msolar. Some objects appear to be located near low surface brightness optical counterparts, or are the result of tidal interactions with nearby large galaxies. Such detections are clearly the result of a larger group or system. However, other isolated HI detections do not coincide with any nearby counterparts visible in optical surveys. The detections lie outside the influence of effects from ram-pressure stripping in the Virgo Cluster. In addition, a preliminary wide-field view of galactic HI observed by the ALFALFA survey will be shown.

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