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arXiv 1005.3191astro-ph.CO
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从2MASS巡天中选出的孤立星系表

Catalog of Isolated Galaxies Selected from the 2MASS Survey

V. E. Karachentseva, S. N. Mitronova, O. V. Melnyk, I. D. Karachentsev

摘要:

我们寻找孤立的星系的基础上自动识别孤立的来源从两微米全天巡天(2MASS),然后通过目视检查他们的周围环境。我们用修正的Karachentseva判据编制了一个包含3227个孤立星系的星表(2MASX),其中包含了6%的2MASS扩展源星表(2MASX)中亮度大于Ks = 12等、角直径a_K > 30角秒的源。星表覆盖整个天空,有效深度为z = 0.02。我们将2MVIG目录中的2493个非常孤立的物体纳入目录,可以用作参考样本,以研究环境对位于物质密度极低区域的星系结构和演化的影响。

英文摘要:

We search for isolated galaxies based on the automatic identification of isolated sources from the Two Micron All-Sky Survey (2MASS) followed by a visual inspection of their surroundings. We use the modified Karachentseva criterion to compile a catalog of 3227 isolated galaxies (2MIG), which contains 6% of 2MASS Extended Sources Catalog (or 2MASX) sources brighter than Ks = 12 mag with angular diameters a_K > 30 arcsec. The catalog covers the entire sky and has an effective depth of z = 0.02. The 2493 very isolated objects of the catalog, which we include into the 2MVIG catalog, can be used as a reference sample to investigate the effects of the environment on the structure and evolution of galaxies located in regions with extremely low density of matter.

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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