Extended envelope of neutral hydrogen around M 101

Details Extended envelope of neutral hydrogen around M 101 Extended envelope of neutral hydrogen around M 101

Apr 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979a%26a....74..138h&link_type=abstract

Astronomy and Astrophysics, vol. 74, no. 2, Apr. 1979, p.138-145.

Astronomy and Astrophysics

Astrophysics

44

Galactic Structure, Gas Density, Hydrogen Clouds, Intergalactic Media, Spatial Distribution, Spiral Galaxies, Astronomical Maps, Galactic Clusters, Hydrogen Atoms, Velocity Distribution

Scientific paper

The H I-distribution around the galaxy M 101 has been studied with high sensitivity (reaching a surface density of about 10 to the 18th atoms/sq cm). The H I-distribution extends to about 200 kpc diameter, which is 3.6 times the Holmberg diameter. In contrast to the highly disturbed H I-distribution in the inner parts of this galaxy, the integrated H I situated in the outer parts seems to be rather symmetrically disturbed. Some features in the velocity field suggest IVC-phenomena associated with M 101.

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