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Hidden Star Formation: The Ultraviolet Perspective

Published online by Cambridge University Press:  30 March 2016

G.R. Meurer ,
T.M. Heckman ,
M. Seibert ,
J. Goldader ,
D. Calzetti ,
D. Sanders  and
C.C. Steidel
G.R. Meurer
Affiliation:
The Johns Hopkins University, Department of Physics and Astronomy
T.M. Heckman
Affiliation:
The Johns Hopkins University, Department of Physics and Astronomy
M. Seibert
Affiliation:
The Johns Hopkins University, Department of Physics and Astronomy
J. Goldader
Affiliation:
University of Pennsylvania
D. Calzetti
Affiliation:
Space Telescope Science Institute
D. Sanders
Affiliation:
Institute for Astronomy, University of Hawaii
C.C. Steidel
Affiliation:
California Institute of Technology

Abstract

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Many recent estimates of the star formation rate density at high redshift rely on rest-frame ultraviolet (UV) data. These are highly sensitive to dust absorption. Applying a correlation between the far-infrared (FIR) to UV flux ratio and UV color found in local starbursts to galaxy samples out to z ∼ 3, one can account for most of the FIR background. However, the correlation is based on a sample that does not include the most extreme starbursts, Ultra Luminous Infrared Galaxies (ULIGs). Our new UV images of ULIGs show that their FIR fluxes are underpredicted by this correlation by factors ranging from 7 to 70. We discuss how ULIGs compare to the various types of high-z galaxies: sub-mm sources, Lyman Break Galaxies, and Extremely Red Objects.

Type
II. Joint Discussions
Information
Highlights of Astronomy , Volume 12: Highlights of Astronomy. As presented at the XXIVth General Assembly of the IAU, 2000 , 2002 , pp. 489 - 492
Copyright
Copyright © Astronomical Society of Pacific 2002

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