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Title:
A new Milky Way satellite found in 21-centimeter line observations
Authors:
Simonson, S. C., III
Affiliation:
AA(Maryland, University, College Park, Md.)
Publication:
Astrophysical Journal, vol. 201, Nov. 1, 1975, pt. 2, p. L103-L108. NSF-supported research. (ApJL Homepage)
Publication Date:
11/1975
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
Galactic Structure, Hydrogen Clouds, Intergalactic Media, Microwave Emission, Tides, Astronomical Maps, Astronomical Models, H Lines, Milky Way Galaxy, Radio Astronomy
DOI:
10.1086/181952
Bibliographic Code:
1975ApJ...201L.103S

Abstract

An anomalous feature in the 21-cm line near the galactic plane appears to be a small, nearby, tidally distorted galaxy. Tidal debris is shown to form a stream of high-velocity H I clouds. The observations and a tidal interaction model based on Schmidt's rotation parameters indicate a distance from the sun of 17 plus or minus 4 kpc, a perigalactic distance of 22 plus or minus 2 kpc, and a mass of 1.0 plus or minus 0.2 x 10 to 8 solar masses.

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