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Dissecting galactic winds with the SAMI Galaxy Survey

Published online by Cambridge University Press:  09 February 2015

I-Ting Ho  and
the SAMI Galaxy Survey Team
I-Ting Ho
Affiliation:
Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822, USA email: [email protected]
the SAMI Galaxy Survey Team
Affiliation:
Full list of team members is available at http://sami-survey.org/members
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Abstract

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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.

Keywords

galaxies: evolutiongalaxies: kinematics and dynamics - galaxies: starburst
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 10 , Issue S309: Galaxies in 3D across the Universe , July 2014 , pp. 210 - 213
Copyright
Copyright © International Astronomical Union 2015 

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