BROAD [C II] LINE WINGS AS TRACER OF MOLECULAR AND MULTI-PHASE OUTFLOWS IN INFRARED BRIGHT GALAXIES
BROAD [C II] LINE WINGS AS TRACER OF MOLECULAR AND MULTI-PHASE OUTFLOWS IN INFRARED BRIGHT GALAXIES
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广泛 [C II] 线翼作为红外明亮星系中分子和多相流出的示踪剂
DOI：
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发表时间：
2016
影响因子：
4.9
通讯作者：
A. Poglitsch
中科院分区：
文献类型：
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作者：
A. Janssen;N. Christopher;E. Sturm;S. Veilleux;A. Contursi;E. Gonz'alez;J. Fischer;R. Davies;A. Verma;J. Graciá;R. Genzel;D. Lutz;A. Sternberg;L. Tacconi;L. Burtscher;A. Poglitsch
本文报道了22个明亮的超亮红外星系（ULIRGs）的119 μm OH吸收和158 μm [C ii]发射的外流特征之间的初步关联。对于这个样本，我们调查是否[C二]宽的翅膀是一个很好的示踪剂的分子外流，以及如何连接的两个示踪剂。在我们的样本中，有14个物体具有由[C ii]跟踪的宽翼成分，并且所有这些物体也显示出OH 119吸收，表明流出（在一种情况下是流入）。其他8个没有发现宽[C ii]分量的天体，主要是没有OH流出或有低速（≤100 km s−1）OH流出的天体。宽[C ii]分量的半高宽显示出与OH 119蓝移速度的趋势，尽管具有显著的分散性。此外，尽管有很大的不确定性，流出的质量来自OH和广泛的[C二]显示1：1的关系。因此，主要结论是，广泛的[C二]翅膀可以用来跟踪分子外流。这可能在高红移时特别相关，在高红移时，分子气体的通常示踪物（如低J CO线）变得难以观察。此外，蓝移Na i D λλ 5890，5896吸收的观测可用于我们的10个源。Na i D的流出速度与OH速度和宽的[C ii] FWHM呈趋势。这些观察结果表明，流出的原子和分子气相是相连的。
We report a tentative correlation between the outflow characteristics derived from OH absorption at 119 μm and [C ii] emission at 158 μm in a sample of 22 local and bright ultraluminous infrared galaxies (ULIRGs). For this sample, we investigate whether [C ii] broad wings are a good tracer of molecular outflows, and how the two tracers are connected. Fourteen objects in our sample have a broad wing component as traced by [C ii], and all of these also show OH119 absorption indicative of an outflow (in one case an inflow). The other eight cases, where no broad [C ii] component was found, are predominantly objects with no OH outflow or a low-velocity (≤100 km s−1) OH outflow. The FWHM of the broad [C ii] component shows a trend with the OH119 blueshifted velocity, although with significant scatter. Moreover, and despite large uncertainties, the outflow masses derived from OH and broad [C ii] show a 1:1 relation. The main conclusion is therefore that broad [C ii] wings can be used to trace molecular outflows. This may be particularly relevant at high redshift, where the usual tracers of molecular gas (like low-J CO lines) become hard to observe. Additionally, observations of blueshifted Na i D λλ 5890, 5896 absorption are available for 10 of our sources. Outflow velocities of Na i D show a trend with OH velocity and broad [C ii] FWHM. These observations suggest that the atomic and molecular gas phases of the outflow are connected.
低z发光恒星形成星系的电离气体流出和整体运动学
DOI：
10.1017/s174392131400934x
发表时间：
2015
期刊：
Proceedings of the International Astronomical Union
影响因子：
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作者：
Arribas S
通讯作者：
Arribas S