HI observations of blue compact galaxies from the first and second Byurakan surveys

Details HI observations of blue compact galaxies from the first and second Byurakan surveys HI observations of blue compact galaxies from the first and second Byurakan surveys

Oct 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999a%26as..139....1t&link_type=abstract

Astronomy and Astrophysics Supplement, v.139, p.1-24

Astronomy and Astrophysics

Astrophysics

56

Galaxies: Compact, Galaxies: Ism, Galaxies: Startburst, Radio Lines: Galaxies, Radio Lines: Ism

Scientific paper

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

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