HI in Byurakan blue compact galaxies (Thuan+, 1999)

Details HI in Byurakan blue compact galaxies (Thuan+, 1999) HI in Byurakan blue compact galaxies (Thuan+, 1999)

Oct 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999ycat..41390001t&link_type=abstract

VizieR On-line Data Catalog: J/A+AS/139/1. Originally published in: 1999A&AS..139....1T

Astronomy and Astrophysics

Astrophysics

Galaxies: Radio, H Ii Regions, H I Data

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] λ5007 line larger than ~50Å, and a velocity <=6000km/s. The detection rate for the statistical sample is 74%. HI masses range between 4x107M&sun; and 5x109M&sun; with the HI mass distribution peaking at 3x108M&sun;. The full width at half-maximum of the HI profile varies between ~30km/s and 160km/s, with a mean of ~92km/s. 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. (4 data files).

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