Astronomy and Astrophysics – Astrophysics
Scientific paper
1999-11-18
Astron.Astrophys. 401 (2003) 483-490
Astronomy and Astrophysics
Astrophysics
22 pages, 9 ps figures, A&AS, in press
Scientific paper
10.1051/0004-6361:20030138
We present HI observations of the galaxies in the first list of the Karachentsev catalog of previously unknown nearby dwarf galaxies (Karachentseva & Karachentsev 1998). This survey covers all known nearby galaxy groups within the Local Volume (i.e. within 10 Mpc) and their environment, that is about 25% of the total sky. A total of 257 galaxies have been observed with a detection rate of 60%. We searched a frequency band corresponding to heliocentric radial velocities from -470 km/s to about +4000 km/s. Non-detections are either due to limited coverage in radial velocity, confusion with Local HI (mainly in the velocity range -140 km/s to +20 km/s, or lack of sensitivity for very weak emission. 25% of the detected galaxies are located within the Local Volume. Those galaxies are dwarf galaxies judged by their optical linear diameter (1.4 +/- 0.2 kpc on the average), their mean total HI mass (4.6 E7 solar masses), and their observed linewidths (39 km/s).
Ehle Matthias
Huchtmeier Walter K.
Karachentsev Igor D.
Karachentseva Valentina E.
No associations
LandOfFree
HI observations of nearby galaxies I. The first list of the Karachentsev catalog does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with HI observations of nearby galaxies I. The first list of the Karachentsev catalog, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and HI observations of nearby galaxies I. The first list of the Karachentsev catalog will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-567137