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Galaxy And Mass Assembly (GAMA): trends in galaxy colours, morphology, and stellar populations with large-scale structure, group, and pair environments

Alpaslan, Mehmet; Driver, Simon; Robotham, Aaron S. G.; Obreschkow, Danail; Andrae, Ellen; Cluver, Michelle; Kelvin, Lee S.; Lange, Rebecca; Owers, Matt; Taylor, Edward N.; Andrews, Stephen K.; Bamford, Steven; Bland-Hawthorn, Joss; Brough, Sarah; Brown, Michael J. I.; Colless, Matthew; Davies, Luke J. M.; Eardley, Elizabeth; Grootes, Meiert W.; Hopkins, Andrew M.; Kennedy, Rebecca; Liske, Jochen; Lara-López, Maritza A.; López-Sánchez, Ángel R.; Loveday, Jon; Madore, Barry F.; Mahajan, Smriti; Meyer, Martin; Moffett, Amanda; Norberg, Peder; Penny, Samantha; Pimbblet, Kevin A.; Popescu, Cristina C.; Seibert, Mark; Tuffs, Richard

Authors

Mehmet Alpaslan

Simon Driver

Aaron S. G. Robotham

Danail Obreschkow

Ellen Andrae

Michelle Cluver

Lee S. Kelvin

Rebecca Lange

Matt Owers

Edward N. Taylor

Stephen K. Andrews

Steven Bamford

Joss Bland-Hawthorn

Sarah Brough

Michael J. I. Brown

Matthew Colless

Luke J. M. Davies

Elizabeth Eardley

Meiert W. Grootes

Andrew M. Hopkins

Rebecca Kennedy

Jochen Liske

Maritza A. Lara-López

Ángel R. López-Sánchez

Jon Loveday

Barry F. Madore

Smriti Mahajan

Martin Meyer

Amanda Moffett

Peder Norberg

Samantha Penny

Cristina C. Popescu

Mark Seibert

Richard Tuffs



Abstract

© 2015 The Authors. We explore trends in galaxy properties with Mpc-scale structures using catalogues of environment and large-scale structure from the Galaxy And Mass Assembly (GAMA) survey. Existing GAMA catalogues of large-scale structure, group, and pair membership allow us to construct galaxy stellar mass functions for different environmental types. To avoid simply extracting the known underlying correlations between galaxy properties and stellar mass, we create a mass matched sample of galaxies with stellar masses within 9.5 ≤ logM < inf > * < /inf > /h < sup > -2 < /sup > M⊙ ≤ 11 for each environmental population. Using these samples, we show that mass normalized galaxies in different large-scale environments have similar energy outputs, u - r colours, luminosities, and morphologies. Extending our analysis to group and pair environments, we show that galaxies that are not in groups or pairs exhibit similar characteristics to each other regardless of broader environment. For our mass controlled sample, we fail to see a strong dependence of Sérsic index or galaxy luminosity on halo mass, but do find that it correlates very strongly with colour. Repeating our analysis for galaxies that have not been mass controlled introduces and amplifies trends in the properties of galaxies in pairs, groups, and large-scale structure, indicating that stellar mass is the most important predictor of the galaxy properties we examine, as opposed to environmental classifications.

Journal Article Type Article
Publication Date Aug 11, 2015
Journal Monthly notices of the Royal Astronomical Society
Print ISSN 0035-8711
Electronic ISSN 0035-8711
Publisher Oxford University Press (OUP)
Peer Reviewed Peer Reviewed
Volume 451
Issue 3
Pages 3249-3268
APA6 Citation Alpaslan, M., Driver, S., Robotham, A. S. G., Obreschkow, D., Andrae, E., Cluver, M., …Tuffs, R. (2015). Galaxy And Mass Assembly (GAMA): trends in galaxy colours, morphology, and stellar populations with large-scale structure, group, and pair environments. Monthly notices, containing papers, abstracts of papers, and reports of the proceedings of the Society, 451(3), 3249-3268. https://doi.org/10.1093/mnras/stv1176
DOI https://doi.org/10.1093/mnras/stv1176
Keywords Galaxies -- evolution; Galaxies -- clusters -- general; Galaxies -- luminosity function, mass function; Galaxies -- stellar content; Galaxies -- large scale structure of Universe
Publisher URL https://academic.oup.com/mnras/article/451/3/3249/1195624
Copyright Statement © 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society

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Copyright Statement
© 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society





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