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Date and Time of the Query: 2019-05-24 T18:55:43 PDT
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For refcode 1997AJ....113..981M:
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Copyright by American Astronomical Society. Reproduced by permission
1997AJ....113..981M DISCOVERY OF A SECOND COMPANION OF DWINGELOO 1 MARSHALL L. MCCALL Department of Physics and Astronomy, York University. 4700 Keele Street, North York, Ontario, M3J 1P3, Canada Electronic mail: mccall@aries.phys.yorku.ca RONALD J. BUTA Department of Physics and Astronomy, University of Alabama, Tuscaloosa, Alabama 35487-0324 Electronic mail: buta@sarah.astr.ua.edu Received 1996 October 28; revised 1996 November 26 ABSTRACT Deep near-infrared CCD imaging of the field of the recently discovered nearby galaxies Dwingeloo 1 and 2 has revealed a third, previously unknown galaxy which is most likely a second physical companion of Dwingeloo 1. Only 9.'2 to the southwest of Dwingeloo 1 is a diffuse featureless oval with a diameter of 1.9' in I. Isophotes are oriented nearly east-west and within 30^deg^ of the direction of Dwingeloo 1. Neutral hydrogen studies have failed to reveal a source at this position, and no H{alpha} emission is evident. Thus, the object is probably a dwarf spheroidal companion of Dwingeloo 1, although there is a small possibility that it is a quiescent gas-rich dwarf with a velocity low enough that its signal is confused with emission from the Milky Way. The galaxy is almost certainly a member of the IC 342-Maffei 1 group, thereby placing it 3+/-1 Mpc away.
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