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GAMA: The effect of environment on galaxy emission line properties

Published online by Cambridge University Press:  17 July 2013

Oliver Steele ,
Daniel Thomas ,
Claudia Maraston ,
James Etherington  and
the GAMA collaboration
Oliver Steele
Affiliation:
Institute of Cosmology and Gravitation, University of Portsmouth, Dennis Sciama Building, Burnaby Road, Portsmouth, PO1 3FX, UK email: oliver.steele@port.ac.uk
Daniel Thomas
Affiliation:
Institute of Cosmology and Gravitation, University of Portsmouth, Dennis Sciama Building, Burnaby Road, Portsmouth, PO1 3FX, UK email: oliver.steele@port.ac.uk
Claudia Maraston
Affiliation:
Institute of Cosmology and Gravitation, University of Portsmouth, Dennis Sciama Building, Burnaby Road, Portsmouth, PO1 3FX, UK email: oliver.steele@port.ac.uk
James Etherington
Affiliation:
Institute of Cosmology and Gravitation, University of Portsmouth, Dennis Sciama Building, Burnaby Road, Portsmouth, PO1 3FX, UK email: oliver.steele@port.ac.uk
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Abstract

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We study the influence of environment on emission line properties using the Galaxy And Mass Assembly (GAMA) survey, taking care to disentangle the role of mass and environment. We look at the role of local density separating galaxies into classifications star forming, AGN, and SF/AGN composite using the BPT diagnostic diagram. We find that environment is generally less important as a driving factor than galaxy mass. The presence of emission lines, whether driven by star formation or central supermassive black hole activity mostly depends on galaxy mass consistently for all galaxy types.

Keywords

galaxies: activegalaxies: evolutiongalaxies: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S295: The intriguing life of massive galaxies , August 2012 , pp. 159 - 162
Copyright
Copyright © International Astronomical Union 2013 

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