Dissecting galactic winds with the SAMI Galaxy Survey

被引：0

作者：

Ho, I-Ting ^{[1
]}

机构：

[1] Univ Hawaii, Inst Astron, 2680 Woodlawn Dr, Honolulu, HI 96822 USA

来源：

GALAXIES IN 3D ACROSS THE UNIVERSE | 2014年 / 10卷 / 309期

基金：

澳大利亚研究理事会;

关键词：

galaxies: evolution; galaxies: kinematics and dynamics; galaxies: starburst; OUTFLOWS; SPECTRA;

D O I：

10.1017/S1743921314009685

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We conduct a case study on a normal star-forming galaxy (z = 0.05) observed by the SAMI Galaxy Survey and demonstrate the feasibility and potential of using large integral field spectroscopic surveys to investigate the prevalence of galactic-scale outflows in the local Universe. We perform spectral decomposition to separate the different kinematic components overlapping in the line-of-sight direction that causes the skewed line profiles in the integral field data. The three kinematic components present distinctly different line ratios and kinematic properties. We model the line ratios with the shock/photoionization code mappings IV and demonstrate that the different emission line properties are caused by major galactic outflows that introduce shock excitation in addition to photoionization. These results set a benchmark of the type of analysis that can be achieved by the SAMI Galaxy Survey on large numbers of galaxies.

引用

页码：210 / 213

页数：4

共 50 条

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