Astron. Astrophys. Suppl. Ser. 147, 187-194

H I observations of nearby galaxies

II. The second list of the Karachentsev catalog

W.K. Huchtmeier¹ - I.D. Karachentsev² - V.E. Karachentseva³

Send offprint request: W.K. Huchtmeier,
e-mail: huchtmeier@mpifr-mpg.de

1 - Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany
2 - Special Astrophysical Observatory, Russian Academy of Sciences, N. Arkhyz, KChR, 369167, Russia
3 - Astronomical Observatory of Kiev University, Observatorna 3, 04053 Kiev, Ukraine

Received July 21; accepted September 8, 2000

Abstract:

We present H I observations of the galaxies in the second list of the Karachentsev catalog of previously unknown nearby dwarf galaxies (Karachentseva et al. 1999). This survey covers an area of 6000 square degrees within the boundaries RA [14h, 23h30] and Dec. [-20⁰, +60⁰] including the nearest cosmic void: $\rm RA = 18^{h}38^{m}$, Dec. = +18⁰, $V_{0}\le$ 1500 kms^-1. A total of 78 galaxies have been observed with a detection rate of 42%. We searched a frequency band corresponding to heliocentric radial velocities from -470 kms^-1 to +3970 kms^-1. Non-detections are either due to limited coverage in radial velocity, confusion with Local H I (mainly in the velocity range -140 kms^-1 to +20 kms^-1), or lack of sensitivity for very weak emission. In the general direction toward the Local Void we detected only one galaxy with a corrected radial velocity below 1500 kms^-1. The Local Void seems to be highly deficient in dwarf galaxies.

Key words: galaxies: distances and redshift -- dwarft -- fundamental parameters -- general