HI observations of nearby galaxies ^*,**

III. More dwarf galaxies in the northern sky

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

Received: 18 October 2000
Accepted: 13 November 2000

Abstract

We carried out a systematic search for nearby dwarf galaxies in the northern sky based on POSS-II film copies. As a result we present a list of 101 nearby dwarf galaxy candidates mainly of low surface brightness which have angular diameters . About two thirds of the objects are new discoveries. This sample is considered as a supplement to the 163 northern dwarf galaxy candidates (A& AS, 1998, 127, 409) which have been detected in the same declination range around the known Local Volume galaxies and to the 78 dwarf galaxy candidates (A& AS, 1999, 135, 221) in the Local Void region. All the galaxies were observed in Hi with the 100-m Effelsberg radio telescope with a detection rate of 46% . The sample of detected galaxies has the following median parameters: radial velocity km s^-1, Hi line width km s^-1, absolute blue magnitude mag, linear diameter kpc, hydrogen mass-to-luminosity ratio , and the HI mass-to-total mass ratio .