首页> 外文期刊>The Astrophysical journal >EXTENDED INFRARED EMISSION IN THE GALAXY CLUSTER IE 1111.9-3754: NO EVIDENCE FOR A LOW-MASS ACCRETION POPULATION
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EXTENDED INFRARED EMISSION IN THE GALAXY CLUSTER IE 1111.9-3754: NO EVIDENCE FOR A LOW-MASS ACCRETION POPULATION

机译:IE 1111.9-3754中的银河群中的扩展红外发射:没有证据表明低聚积人口

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摘要

Optical observations of an extended red halo surrounding the galaxy 1E 1111.9-3754 sparked considerable interest as potentially the first detection of low-mass star formation in an X-ray cooling flow. To test this possibility, we obtained near-infrared surface photometry of this galaxy at J (1.25 μm) and K (2.15 μm) and compare this data with models of a low-mass stellar accretion population. Our surface brightness measurements are consistent with a normal r~(1/4) elliptical galaxy profile and show no evidence of an extended infrared halo, which argues against the low-mass stellar accretion hypothesis.
机译:对围绕银河系1E 1111.9-3754的扩展红色光晕的光学观察引起了人们极大的兴趣,因为这可能是首次检测到X射线冷却流中低质量恒星的形成。为了测试这种可能性,我们获得了该星系在J(1.25μm)和K(2.15μm)处的近红外表面光度法,并将此数据与低质量恒星积聚种群的模型进行了比较。我们的表面亮度测量结果与正常的r〜(1/4)椭圆星系轮廓一致,并且没有显示红外光晕扩展的证据,这与低质量恒星积聚假说背道而驰。

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