Figuring Out Gas & Galaxies in Enzo (FOGGIE). II. Emission from the z = 3 Circumgalactic Medium
Figuring Out Gas & Galaxies in Enzo (FOGGIE). II. Emission from the z = 3 Circumgalactic Medium
复制标题
计算出气体
DOI：
10.3847/1538-4357/ab9310
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Britton D. Smith
中科院分区：
文献类型：
--
作者：
L. Corlies;M. Peeples;J. Tumlinson;Brian W. O’Shea;N. Lehner;J. Howk;John M. O’Meara;Britton D. Smith
观测发射中的环星系介质(CGM)提供了气体的空间和运动学范围的3D地图，这些气体为星系提供燃料并接收它们的反馈。我们给出了来自计算恩佐(Foggie)中的气体和星系的高分辨率CGM气体的模拟发射线地图，并将这些地图与气体的物理和空间属性联系起来。特别是，我们研究了导致大多数O-VI发射的电离源，以及分辨率如何影响产生发射的气体的物理性质。最后，当单独增加空间分辨率时，对于所考虑的某些线，线发射的总亮度增加了一个数量级。目前的整体场单位仪器，如凯克宇宙网成像仪和多单位光谱探测器，应该能够探测到这种发射中最亮的结和细丝，并利用这一点来推断CGM气体相对于星系的整体运动学。我们的结论是，模拟的CGM气体的空间分辨率可以显著影响气体温度、密度和金属度的分布，这些分布对给定的可观测区域有贡献。需要比迄今为止宇宙学模拟中通常包含的空间分辨率更高的空间分辨率，才能根据驱动发射的基本气体结构适当地解释观测结果。
Observing the circumgalactic medium (CGM) in emission provides 3D maps of the spatial and kinematic extent of the gas that fuels galaxies and receives their feedback. We present mock emission-line maps of highly resolved CGM gas from the Figuring Out Gas & Galaxies in Enzo (FOGGIE) project and link these maps back to physical and spatial properties of the gas. In particular, we examine the ionization source leading to most O vi emission and how resolution affects the physical properties of the gas generating the emission. Finally, when increasing the spatial resolution alone, the total luminosity of the line emission increases by an order of magnitude for some lines considered. Current integral field unit instruments like Keck Cosmic Web Imager and Multi Unit Spectroscopic Explorer should be able to detect the brightest knots and filaments of such emission, and use this to infer the bulk kinematics of the CGM gas with respect to the galaxy. We conclude that the spatial resolution of simulated CGM gas can significantly influence the distribution of gas temperatures, densities, and metallicities that contribute to a given observable region. Greater spatial resolution than has been typically included in cosmological simulations to date is needed to properly interpret observations in terms of the underlying gas structure driving emission.
DOI：
10.1086/587486
发表时间：
2007-06
期刊：
The Astrophysical Journal Supplement Series
影响因子：
--
作者：
T. Tripp;K. Sembach;D. Bowen;B. Savage;E. Jenkins;N. Lehner;P. Richter
通讯作者：
T. Tripp;K. Sembach;D. Bowen;B. Savage;E. Jenkins;N. Lehner;P. Richter
DOI：
10.3847/1538-4357/ab378f
发表时间：
2018-11
期刊：
The Astrophysical Journal
影响因子：
--
作者：
C. Hummels;Britton D. Smith;P. Hopkins;B. O’Shea;Devin W. Silvia;J. Werk;N. Lehner;J. Wise;D. Collins;Iryna S. Butsky
通讯作者：
C. Hummels;Britton D. Smith;P. Hopkins;B. O’Shea;Devin W. Silvia;J. Werk;N. Lehner;J. Wise;D. Collins;Iryna S. Butsky
环绕银河系介质的发射：从宇宙学放大模拟到多波长可观测值
影响因子：
4.8
作者：
Augustin R
通讯作者：
Augustin R