AAS 203rd Meeting, January 2004
Session 116 Elliptical and Spiral Galaxies
Poster, Thursday, January 8, 2004, 9:20am-4:00pm, Grand Hall

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[116.24] Streams of Neutral Hydrogen in the M81 Group of Galaxies

K. H. R. Rubin (Yale University), G.I. Langston, F. Walter (NRAO)

The nearby M81/M82 group of galaxies is embedded in a cloud of neutral hydrogen that traces the history of the interaction between these galaxies. At ~3.5 Mpc the M81/M82 group is one of the closest groups.

A complete census of dwarf galaxies and high velocity clouds (HVCs) in the M81 group is important for understanding the mass distribution of this group. We set a 6{\sigma} detection limit for HI of 3\times106 M\odot. This study has relevance to studies of our own Galaxy/Local group. The exact location of HVCs surrounding our galaxy still remains a puzzle. Our observations show the M81/M82 group has connected streams of hydrogen, not isolated clouds.

If you would like more information about this abstract, please follow the link to http://www.gb.nrao.edu/~glangsto/m81. This link was provided by the author. When you follow it, you will leave the Web site for this meeting; to return, you should use the Back comand on your browser.

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Bulletin of the American Astronomical Society, 35#5
© 2003. The American Astronomical Soceity.