CaltechAUTHORS
  A Caltech Library Service

Studying the evolution of galaxies in compact groups over the past 3 Gyr – II. The importance of environment in the suppression of star formation

Bitsakis, T. and Dultzin, D. and Ciesla, L. and Díaz-Santos, T. and Appleton, P. N. and Charmandaris, V. and Krongold, Y. and Guillard, P. and Alatalo, K. and Zezas, A. and González, J. and Lanz, L. (2016) Studying the evolution of galaxies in compact groups over the past 3 Gyr – II. The importance of environment in the suppression of star formation. Monthly Notices of the Royal Astronomical Society, 459 (1). pp. 957-970. ISSN 0035-8711. https://resolver.caltech.edu/CaltechAUTHORS:20160620-145343437

[img] PDF - Published Version
See Usage Policy.

915Kb
[img] PDF - Submitted Version
See Usage Policy.

673Kb

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20160620-145343437

Abstract

We present an in depth study on the evolution of galaxy properties in compact groups over the past 3 Gyr. We are using the largest multiwavelength sample to-date, comprised 1770 groups (containing 7417 galaxies), in the redshift range of 0.01 < z < 0.23. To derive the physical properties of the galaxies, we rely on ultraviolet (UV)-to-infrared spectral energy distribution modelling, using cigale. Our results suggest that during the 3 Gyr period covered by our sample, the star formation activity of galaxies in our groups has been substantially reduced (3 to 10 times). Moreover, their star formation histories as well as their UV-optical and mid-infrared colours are significantly different from those of field and cluster galaxies, indicating that compact group galaxies spend more time transitioning through the green valley. The morphological transformation from late-type spirals to early-type galaxies occurs in the mid-infrared transition zone rather than in the UV-optical green valley. We find evidence of shocks in the emission line ratios and gas velocity dispersions of the late-type galaxies located below the star forming main sequence. Our results suggest that in addition to gas stripping, turbulence and shocks might play an important role in suppressing the star formation in compact group galaxies.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1093/mnras/stw686DOIArticle
http://mnras.oxfordjournals.org/content/459/1/957PublisherArticle
http://arxiv.org/abs/1603.06007arXivDiscussion Paper
ORCID:
AuthorORCID
Bitsakis, T.0000-0001-5787-8242
Díaz-Santos, T.0000-0003-0699-6083
Appleton, P. N.0000-0002-7607-8766
Charmandaris, V.0000-0002-2688-1956
Guillard, P.0000-0002-2421-1350
Alatalo, K.0000-0002-4261-2326
Zezas, A.0000-0001-8952-676X
Lanz, L.0000-0002-3249-8224
Additional Information:© 2016 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. Accepted 2016 March 21; Received 2016 March 18; In original form 2016 February 3; First published online March 23, 2016. TB would like to acknowledge support from the DGAPA-UNAM postdoctoral fellowships. DD acknowledges support through grant 107313 from PAIIT-UNAM. VC would like to acknowledge partial support from the EU FP7 Grant PIRSES-GA-2012-316788. AZ acknowledges funding from the European Research Council under the European Union’s Seventh Framework Programme (FP/2007-2013)/ERC Grant Agreement no. 617001. YK acknowledges support from grant DGAPA PAIIPIT IN104215 and CONACYT grant 168519. T.D-S. acknowledges support from ALMA-CONICYT project 31130005 and FONDECYT 1151239. This research has made use of data products from: Galaxy Evolution Explorer (GALEX), and ultraviolet space telescope operated by Caltech/NASA, Infrared Science Archive (IRSA/Caltech), a UCLA/JPL-Caltech/NASA joint project, and Sloan Digital Sky Survey (SDSS). TB would also like to thank P. Bonfini, G. Maravelias, A. Maragkoudakis and A. Steiakaki for the useful discussions/suggestions.
Group:Infrared Processing and Analysis Center (IPAC)
Funders:
Funding AgencyGrant Number
Dirección General Asuntos del Personal Académico (DGAPA)UNSPECIFIED
Programa de Apoyo a Proyectos de Investigación e Innovación Tecnológica (PAPIIT)107313
Marie Curie FellowshipPIRSES-GA-2012-316788
European Research Council (ERC)617001
Programa de Apoyo a Proyectos de Investigación e Innovación Tecnológica (PAPIIT)IN104215
Consejo Nacional de Ciencia y Tecnología (CONACYT)168519
Comisión Nacional de Investigación Científica y Tecnológica (CONICYT)31130005
Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT)1151239
Universidad Nacional Autónoma de México (UNAM)UNSPECIFIED
Subject Keywords:galaxies: evolution; galaxies: groups: general; galaxies: interactions
Issue or Number:1
Record Number:CaltechAUTHORS:20160620-145343437
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20160620-145343437
Official Citation:T. Bitsakis, D. Dultzin, L. Ciesla, T. Díaz-Santos, P. N. Appleton, V. Charmandaris, Y. Krongold, P. Guillard, K. Alatalo, A. Zezas, J. González, and L. Lanz Studying the evolution of galaxies in compact groups over the past 3 Gyr – II. The importance of environment in the suppression of star formation MNRAS (June 11, 2016) Vol. 459 957-970 doi:10.1093/mnras/stw686 first published online March 23, 2016
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:68542
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:22 Jun 2016 04:53
Last Modified:05 Nov 2019 05:47

Repository Staff Only: item control page