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Evolution of bulgeless low surface brightness galaxies

Published online by Cambridge University Press:  17 August 2016

X. Shao ,
F. Hammer ,
Y. B. Yang  and
Y. C. Liang
X. Shao
Affiliation:
Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, China Laboratoire GEPI, Observatoire de Paris, CNRS-UMR8111, Univ. Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, F-92195 Meudon, France
F. Hammer
Affiliation:
Laboratoire GEPI, Observatoire de Paris, CNRS-UMR8111, Univ. Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, F-92195 Meudon, France
Y. B. Yang
Affiliation:
Laboratoire GEPI, Observatoire de Paris, CNRS-UMR8111, Univ. Paris Diderot, Sorbonne Paris Cité, 5 place Jules Janssen, F-92195 Meudon, France
Y. C. Liang
Affiliation:
Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing, 100012, China
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Abstract

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Based on the Sloan Digital Sky Survey DR 7, we investigate the environment, morphology, and stellar population of bulgeless low surface-brightness (LSB) galaxies in a volume-limited sample with redshift ranging from 0.024 to 0.04 and Mr ≤ −18.8. We find that, for bulgeless galaxies, the surface brightness does not depend on the environment. Irregular LSB galaxies have more young stars and are more metal-poor than regular LSB galaxies. These results suggest that the evolution of LSB galaxies may be driven by their dynamics, including mergers rather than by their large-scale environment.

Keywords

galaxies: evolutiongalaxies: formationgalaxies: kinematics and dynamics
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S319: Galaxies at High Redshift and Their Evolution Over Cosmic Time , August 2015 , pp. 138
Copyright
Copyright © International Astronomical Union 2016 

References

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