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arXiv 0902.0256astro-ph.CO
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230个HIPASS射电源的光学鉴别

Optical Identifications of 230 HIPASS Radio Sources

I. D. Karachentsev, D. I. Makarov, V. E. Karachentseva, O. V. Melnyk

摘要:

我们目前的坐标,视星等,和形态类型的230个星系大概确定HIPASS(HI帕克斯全天巡天)源。HIPASS源的新光学对应物遵循众所周知的氢质量,光度和星系类型之间的统计关系。低表面亮度星系在这些天体中占很大比例。它们的氢质光比的中值比明亮的HIPASS星系高2或3倍,达到$1.7 M_{\odot}/L_{\odot}$。我们的一些天体位于边界$\log(M_{HI}/L_B) = 0.2(M_B + 20)$附近,该边界定义了盘状星系对大规模恒星形成的引力稳定区。

英文摘要:

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 $1.7 M_{\odot}/L_{\odot}$. 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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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