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Date and Time of the Query: 2019-05-26 T12:13:21 PDT
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For refcode 1995A&A...293L..33H:
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Copyright by European Southern Observatory (ESO). Reproduced by permission
1995A&A...293L..33H Letter to the Editor Two new possible members of the IC 342-Maffei 1/2 group of galaxies W. K.Huchtmeier, G. Lercher, R. Seeberger, W. Saurer, and R. Weinberger Max-Planck Institut fur Radioastronomie, Auf dem Hugel 69, D-53 121 Bonn, Germany Institut fur Astronomie der Leopold-Franzens-Universitat Innsbruck, Technikerstrasse 25, A-6020 Innsbruck, Austria Received 23 September 1994/Accepted 3 November 1994 Abstract. We report the detection of two nearby galaxies in Cassiopeia in HI. Their low heliocentric velocities, 35 +/- 2 and 112 +/- 5 km s^-1^, suggest they are members of the IC342 -Maffei group. The smaller object (Cas 1) has been classified optically as an irregular dwarf. An HI linewidth of 49 km s^-1^ and a nearly gaussian shape of the profile support the classification. Its HI mass (at an assumed distance of 3 Mpc) is 1 10^8^ M_sun_. The larger galaxy (Cas 2) has an HI mass of 3.7 10^8^M_sun_ (same distance) and a linewidth (at half power) of 204 km s^- 1^ which corresponds to a rotational velocity (after correction for inclination, i~65^deg^) of about 112 km s^-1^. This is a galaxy roughly of the mass of M 33. This galaxy has been discovered independently by another group with the Dwingeloo telescope (Kraan-Korteweg et al. 1994). Our search was based on an optical survey for galaxies in the Galactic Plane (see Seeberger et al. 1994) and included 10 objects from the neighborhood of IC 342 and Maffei 1/2. The other detected galaxies are background objects. Key words: Galaxies: general - Galaxies: distances and redshifts - Galaxies: individual: - (Galaxies): Local Group
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