A high velocity H I cloud near the galactic center

Details A high velocity H I cloud near the galactic center A high velocity H I cloud near the galactic center

Dec 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974a%26a....36..365s&link_type=abstract

Astronomy and Astrophysics, vol. 36, no. 3, Dec. 1974, p. 365-368.

Astronomy and Astrophysics

Astronomy

19

Astronomical Models, Galactic Nuclei, Hydrogen Clouds, Radio Astronomy, Velocity Distribution, Astronomical Maps, Hydrogen Ions, Intergalactic Media, Ionized Gases, Mass Transfer, Microwave Emission

Scientific paper

Twenty-one centimeter line observations of a high velocity H I cloud near l = +8 deg, b = -4 deg are discussed and interpreted. The cloud is approximately 3 deg in extent and has a mean line-of-sight velocity of -212.8 km/sec: the velocity dispersion is 15 km/sec. Three possible interpretations are considered: that the object may be a nearby external galaxy, that it may be an infalling high velocity H I cloud, or that it may be a cloud which has been ejected from the galactic nucleus. Of these three, the last appears most plausible on account of the close agreement with predictions based upon previously proposed models of gas ejection from the galactic nucleus.

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