CO luminosity - line width correlation of sub-millimeter galaxies and a possible cosmological application
CO luminosity - line width correlation of sub-millimeter galaxies and a possible cosmological application
复制标题
CO光度-亚毫米星系的线宽相关性和可能的宇宙学应用
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
S. Toft
中科院分区：
文献类型：
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作者：
T. Goto;S. Toft
上下文CO发光度（LCO）与其线宽（FWHM）之间可能存在相关性，但文献中对此提出了否定。这种说法通常是基于一个小的，或异质的星系样本，因此是不确定的。目标。我们的目的是证明或反驳L_CO-FWHM相关性。方法.我们从文献中收集了大量z>2的亚毫米星系样本，并研究了L_CO-FWHM关系。结果在仔细评估了引力透镜的选择效应和不确定性（如倾角和放大率）后，我们发现LCO和FWHM之间存在着微弱但显著的相关性。我们还讨论了利用关联测量宇宙学距离的可行性。
Context. A possible correlation between CO luminosity (L_CO ) and its line width (FWHM) has been suggested and denied in the literature. Such claims were often based on a small, or heterogeneous sample of galaxies, and thus inconclusive. Aims. We aim to prove or dis-prove the L_CO -FWHM correlation. Methods. We compile a large sample of submm galaxies at z>2 from the literature, and investigate the L_CO-FWHM relation. Results. After carefully evaluating the selection effects and uncertainties such as inclination and magnification via gravitational lensing, we show that there exist a weak but significant correlation between L_CO and FWHM. We also discuss a feasibility to measure the cosmological distance using the correlation.
影响因子：
6.5
作者：
C. Breuck;Rebecca J. Williams;M. Swinbank;P. Caselli;K. Coppin;T. Davis;R. Maiolino;T. Nagao;I. Smail;F. Walter;A. Weiss;M. Zwaan
通讯作者：
C. Breuck;Rebecca J. Williams;M. Swinbank;P. Caselli;K. Coppin;T. Davis;R. Maiolino;T. Nagao;I. Smail;F. Walter;A. Weiss;M. Zwaan