Title | HI observations of blue compact galaxies from the first and second Byurakan surveys |
Authors | Thuan, Trinh X.; Lipovetsky, V. A.; Martin, J. -M.; Pustilnik, S. A. |
Bibcode | 1999A&AS..139....1T Search ADS ↗ |
Abstract | We present the results of a neutral hydrogen survey of 79 galaxies from a statistical sample of 88 Blue Compact Galaxies (BCGs) selected from the First and Second Byurakan objective prism surveys to have a HII region-like spectrum, an equivalent width of the [O III] lambda 5007 line larger than ~ 50 Å, and a velocity <= 6000 km s(-1) . The detection rate for the statistical sample is 74%. HI masses range between 4 10(7)M_sun) and 5 10(9) M_sun with the HI mass distribution peaking at 3 10(8) M_sun. The full width at half-maximum of the HI profile varies between ~ 30 km s(-1) and 160 km s(-1) , with a mean of ~ 92 km s(-1) . These small widths are characteristic of dwarf galaxies. For comparison, we have also observed an additional 92 BCGs with weaker star formation and/or larger distances, and/or interesting astrophysical properties. These in general have larger widths and HI masses. Tables~1,~2,~3 also available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsweb.u-strasbg.fr/Abstract.html |
Objects | 169 Objects Search NED ↙ |