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Probing star formation at intermediate z

Published online by Cambridge University Press:  18 January 2010

E. N. Voyer ,
D. F. de Mello ,
C. Quirk ,
B. Siana ,
J. P. Gardner  and
H. Teplitz
E. N. Voyer
Affiliation:
The Catholic University of America, Washington, DC, USA NASA Goddard Space Flight Center, Greenbelt, MD, USA
D. F. de Mello
Affiliation:
The Catholic University of America, Washington, DC, USA NASA Goddard Space Flight Center, Greenbelt, MD, USA
C. Quirk
Affiliation:
The Catholic University of America, Washington, DC, USA
B. Siana
Affiliation:
California Institute of Technology, Pasadena, CA, USA
J. P. Gardner
Affiliation:
NASA Goddard Space Flight Center, Greenbelt, MD, USA
H. Teplitz
Affiliation:
NASA/IPAC Infrared Science Archive, Pasadena, CA, USA
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Abstract

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We summarize the latest results of an ongoing project aimed at connecting starburst galaxies in the local Universe and Lyman-break galaxies (LBGs) in the distant Universe using rest-frame ultraviolet (UV) images. We are quantifying star formation in the local Universe using GALEX data of interacting galaxies and we are using Hubble Space TelescopeU-band and optical images of the Ultra Deep Field to quantify star formation at intermediate (z ~ 1) and high (z > 2) redshifts, respectively. We are measuring sizes of star-forming clumps in all redshift ranges and searching for evolutionary effects. We chose the rest-frame UV to do this work because young and massive stars radiate most their energy in the UV and also because LBGs are selected to be UV-bright. We discuss whether all galaxies go through an LBG phase and whether disks show any sign of size of evolution at z < 1.

Keywords

galaxies: evolutiongalaxies: starburst
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 5 , Symposium S266: Star clusters: basic galactic building blocks throughout time and space , August 2009 , pp. 550
Copyright
Copyright © International Astronomical Union 2010