H-ATLAS: the far-infrared properties of galaxies in and around the Coma cluster

H-ATLAS: the far-infrared properties of galaxies in and around the Coma cluster
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H-ATLAS:后发星团及其周围星系的远红外特性

DOI:
10.1093/mnras/stw305
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发表时间:
2016
影响因子:
4.8
通讯作者:
Fuller C
Fuller C
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Fuller C

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我们描述了后发座星系团和它所在的星系细丝的远红外线调查。利用HerschelH-ATLAS(HerschelAstrophysicalTerahertzLarge Area Survey)在100、160、250、350和500 μm五个波段上观测到了150 ° 2的区域。SDSS光谱巡天(mr≤ 17.8)被用来定义一个区域(维里半径内)和红移选择(4268 <v< 9700 km s−1)的744个后发座星系团的样本-后发座星系团目录。为了比较,我们还定义了一个样本的951个星系的连接灯丝-后发座灯丝目录。光学位置和参数被用来定义适当的孔径来测量每个星系的远红外辐射。我们已经在SPIRE 250 μm波段探测到了744个星系中的99个(13%)和951个星系中的422个(44%)。我们认为不同形态类型的星系的相对检测率发现,它是唯一的S 0/Sa人口,显示出明显的差异之间的集群和灯丝。我们发现,除了早期类型的星系尘埃温度,这是显着更热的集群比在灯丝(X射线加热?)的尘埃质量和温度的集群和灯丝星系之间没有差异。从一个化学演化模型,我们没有发现不同的演化过程(气体损失或下降)之间的星系团和暗条的证据。
We describe a far-infrared survey of the Coma cluster and the galaxy filament it resides within. Our survey covers an area of ∼150 deg2observed byHerschelH-ATLAS (HerschelAstrophysical Terahertz Large Area Survey) in five bands at 100, 160, 250, 350 and 500 μm. The SDSS spectroscopic survey (mr≤ 17.8) is used to define an area (within the virial radius) and redshift selected (4268 <v< 9700 km s−1) sample of 744 Coma cluster galaxies – the Coma Cluster Catalogue. For comparison, we also define a sample of 951 galaxies in the connecting filament – the Coma Filament Catalogue. The optical positions and parameters are used to define appropriate apertures to measure each galaxy's far-infrared emission. We have detected 99 of 744 (13 per cent) and 422 of 951 (44 per cent) of the cluster and filament galaxies in the SPIRE 250 μm band. We consider the relative detection rates of galaxies of different morphological types finding that it is only the S0/Sa population that shows clear differences between the cluster and filament. We find no differences between the dust masses and temperatures of cluster and filament galaxies with the exception of early-type galaxy dust temperatures, which are significantly hotter in the cluster than in the filament (X-ray heating?). From a chemical evolution model, we find no evidence for different evolutionary processes (gas loss or infall) between galaxies in the cluster and filament.
螺旋星系中气体和尘埃的径向分布
DOI: 10.1051/0004-6361/201014554
发表时间: 2010
期刊: arXiv: Astrophysics of Galaxies
影响因子: --
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期刊: The Astrophysical Journal
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作者:
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DOI: 10.1093/mnras/sts125
发表时间: 2012-09
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发表时间: 1951-04
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作者:
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DOI: 10.1086/523101
发表时间: 2007-09
期刊: The Astrophysical Journal
影响因子: --
作者:
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