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arXiv 0905.3907astro-ph.CO
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五组星系的HI观测

HI Observations of Five Groups of Galaxies

E. Freeland, A. Stilp, E. Wilcots

摘要:

本文介绍了五个星系群的HI观测结果,它们的速度色散和螺旋分数(括号中最亮的光学群成员)跨越了一定的范围:NGC 7582(NGC 7552),USGC U207(NGC 2759),USGC U070(NGC 664),USGC U412(NGC 3822),USGC U451(NGC 4065)。在五个组中的三个组中检测到中性组内气体。我们在USGC U070星系群中发现了一个以前未编目的星系,其位置为RA(2000)= 01h45m27s,Dec(2000)= +04d36 '19”,我们将其命名为FSW J014526.92+043619.1。我们编制了一个HI质量函数的组环境,并发现,弱端斜率是一致的是平坦的。

英文摘要:

We present the results of HI observations of five groups of galaxies spanning a range of velocity dispersion and spiral fraction (brightest optical group member in parenthesis): NGC 7582 (NGC 7552), USGC U207 (NGC 2759), USGC U070 (NGC 664), USGC U412 (NGC 3822), USGC U451 (NGC 4065). Neutral intragroup gas is detected in three of the five groups. We present the discovery of a previously uncataloged galaxy in the USGC U070 group at RA(2000)= 01h45m27s, Dec(2000) = +04d36'19" which we are designating FSW J014526.92+043619.1. We compile an HI mass function for the group environment and find that the faint-end slope is consistent with being flat.

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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