Are tides responsible for high velocity gas in M 101?

Details Are tides responsible for high velocity gas in M 101? Are tides responsible for high velocity gas in M 101?

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...243..109c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 243, no. 1, March 1991, p. 109-114.

Astronomy and Astrophysics

Astrophysics

7

Disk Galaxies, Gas Dynamics, H I Regions, Interstellar Gas, High Speed, Magellanic Clouds, Milky Way Galaxy, Perturbation Theory

Scientific paper

An interpretation of the recently discovered high velocity H I clouds in M 101 in terms of tidal interaction with a small companion is proposed. The high velocity gas can be accounted for only from the perturbations induced in the M 101 disk, without invoking any gas accretion. The phenomenon would then be quite different from the high velocity clouds (HVC) in the Galaxy, which are likely to be accreted clouds from the Magellanic Clouds. The reality of gas infall remains unproven in external galaxies.

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