Streams of Neutral Hydrogen in the M81 Group of Galaxies

Details Streams of Neutral Hydrogen in the M81 Group of Galaxies Streams of Neutral Hydrogen in the M81 Group of Galaxies

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...20311624r&link_type=abstract

American Astronomical Society Meeting 203, #116.24; Bulletin of the American Astronomical Society, Vol. 35, p.1400

Astronomy and Astrophysics

Astronomy

Scientific paper

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 6σ detection limit for HI of 3×106 M&sun;. 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.

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