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HST Observations of Giant Arcs

Smail, Ian and Dressler, Alan and Kneib, Jean-Paul and Ellis, Richard S. and Couch, Warrick J. and Sharples, Ray M. and Oemler, Augustus, Jr. (1996) HST Observations of Giant Arcs. In: Astrophysical Applications of Gravitational Lensing. International Astronomical Union Symposium (IAUS). No.173. Springer , Dordrecht, pp. 119-124. ISBN 978-0-7923-3955-7. https://resolver.caltech.edu/CaltechAUTHORS:20190605-133003509

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Abstract

We discuss HST imaging of eight spectroscopically-confirmed giant arcs, pairs and arclets. Although our HST observations include both pre- and post-refurbishment images, the depth of the exposures guarantees that the majority of the arcs are detected with diffraction-limited resolution. We present the size information on these distant field galaxies in the light of HST studies of lower redshift samples. We suggest that the dominant population of star-forming galaxies at z ∼ 1 is a factor of 1.5–2 times smaller in size than the equivalent population in the local field. This implies either a considerable evolution in the sizes of star-forming galaxies within the last ∼10 Gyrs or a shift in the relative space densities of massive and dwarf star-forming systems over the same time scale.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1007/978-94-009-0221-3_32DOIArticle
ORCID:
AuthorORCID
Smail, Ian0000-0003-3037-257X
Ellis, Richard S.0000-0001-7782-7071
Additional Information:© 1996 International Astronomical Union. We thank Roger Blandford, Bernard Fort, David Hogg, Yannick Mellier and Jordi Miralda-Escude for useful discussions. We also wish to thank Dr. S. Mutz for providing the data from his HST study. Support via a Carnegie Fellowship, Space Telescope Grant GO-05352 and an IAU Travel Grant are gratefully acknowledged. The observations presented here were obtained with the NASA/ESA Hubble Space Telescope, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555.
Funders:
Funding AgencyGrant Number
Carnegie Institution of WashingtonUNSPECIFIED
NASAGO-05352
International Astronomical UnionUNSPECIFIED
NASANAS5-26555
Subject Keywords:Distant Galaxy; Faint Galaxy; Field Galaxy; Galaxy Image; Isothermal Mass
Series Name:International Astronomical Union Symposium (IAUS)
Issue or Number:173
Record Number:CaltechAUTHORS:20190605-133003509
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20190605-133003509
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:96156
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:06 Jun 2019 03:32
Last Modified:03 Oct 2019 21:19

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