Optical identifications of 230 HIPASS radio sources

被引：0
|
作者：
I. D. Karachentsev
D. I. Makarov
V. E. Karachentseva
O. V. Melnik
机构：
[1] Russian Academy of Sciences,Special Astrophysical Observatory
[2] Observatoire de Lyon,Astronomical Observatory
[3] Kiev National University,undefined
来源：
Astronomy Letters | 2008年 / 34卷
关键词：
dwarf galaxies; galaxy evolution; interstellar gas in galaxies; 95.80.+p; 98.52.Wz; 98.56.Wm; 98.62.Py; 98.62.Ve;
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学科分类号：
摘要：
We present the coordinates, apparent magnitudes, and morphological types for 230 galaxies presumably identified with HIPASS (HI Parkes All-Sky Survey) sources. The new optical counterparts of the HIPASS sources follow the well-known statistical relationships between the hydrogen mass, luminosity, and type of galaxies. Low-surface-brightness galaxies constitute a significant fraction among these objects. The median value of the hydrogen mass-to-luminosity ratio for them is a factor of 2 or 3 higher than that for bright HIPASS galaxies, reaching 1.7M⊙/L⊙. A number of our objects are located near the boundary log(MHI/LB) = 0.2(MB + 20) that defines the zone of gravitational stability of disk galaxies against large-scale star formation.
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页码：832 / 838
页数：6
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