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arXiv · 0902.0256

Optical Identifications of 230 HIPASS Radio Sources

I. D. Karachentsev·D. I. Makarov·V. E. Karachentseva·O. V. Melnyk
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Abstract

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 $1.7 M_{\odot}/L_{\odot}$. A number of our objects are located near the boundary $\log(M_{HI}/L_B) = 0.2(M_B + 20)$ that defines the zone of gravitational stability of disk galaxies against large-scale star formation.

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I. D. Karachentsev, D. I. Makarov, V. E. Karachentseva, O. V. Melnyk. 2014-01-17. Optical Identifications of 230 HIPASS Radio Sources. https://doi.org/10.1134/s1063773708120037

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