The bivariate K -band-submillimetre luminosity functions of the local HRS galaxy sample
The bivariate K -band-submillimetre luminosity functions of the local HRS galaxy sample
复制标题
当地HRS星系样本的双变量K带亚毫米光度函数
DOI：
10.1051/0004-6361/201322747
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发表时间：
2014
影响因子：
6.5
通讯作者：
Andreani P
中科院分区：
文献类型：
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作者：
Andreani P
通过计算Herschel参考巡天（HRS）的双变量K波段-亚毫米光度函数（BLF），研究了K波段和邻近星系亚毫米辐射之间的关系。我们用脉冲法从K波段和亚毫米累积分布中导出了BLF。使用BLF使我们能够在更坚实的统计基础上推导出光度之间的关系。分析表明，在整个HRS样本上，K波段与亚毫米级光度之间的关系没有统计学意义的结论。然而，通过将我们的分析限制在晚型星系中，突出了这些光度之间非常紧密的关系。在K波段和亚毫米波段计算的晚型星系的光度函数是相关的，这种相关性是由已经观测到的恒星质量和冷尘埃质量之间的联系引起的。
We study the relationship between theK-band and the sub-millimetre (submm) emissions of nearby galaxies by computing the bivariateK-band-submm luminosity function (BLF) of theHerschelReference Survey (HRS), a volume-limited sample observed in submm withHerschel/SPIRE. We derive the BLF from theK-band and submm cumulative distributions using acopulamethod. Using the BLF allows us to derive the relationship between the luminosities on more solid statistical ground. The analysis shows that over the whole HRS sample, no statistically meaningful conclusion can be derived for any relationship between theK-band and the submm luminosity. However, a very tight relationship between these luminosities is highlighted, by restricting our analysis to late-type galaxies. The luminosity function of late-type galaxies computed in theK-band and in the submm are dependent and the dependence is caused by the link, between the stellar mass and the cold dust mass, which has been already observed.