@article{3a231b8ba7ea41e2abfcff28bb8e03a4,
title = "Optical-IR spectral energy distribution of the protogalaxy candidate MS 1512-cB58",
abstract = "The spectral energy distribution of the protogalaxy candidate MS 1512-cB58 at z = 2.72 is presented. Photometry in seven bands ranging from g to K' (1300-6000 A rest wavelength) are fitted with population synthesis models. The data confirm a very young age for this galaxy in agreement with ages estimated from preliminary C IV λ1550 P Cygni profile modeling. Single-burst models with ages greater than about 20 Myr can be discarded at the 99\% confidence level, and continuous star formation models with ages greater than about 35 Myr can be discarded at the 95\% confidence level. The spectral energy distribution is most consistent with a continuous star formation model of about 10-20 Myr, with reddening of E(B-V) ∼ 0.3. No evidence for an older population of stars is seen, but the possibility of an older population with as much as 90\% of the galaxy mass cannot be ruled out. We discuss the possible ramifications of a nonstandard IMF and gravitational lensing on the galaxy's age and mass.",
keywords = "Galaxies: formation, Galaxies: photometry, Galaxies: starburst",
author = "E. Ellingson and Yee, \{H. K.C.\} and Jill Bechtold and R. Elston",
note = "Funding Information: 1 Guest observer, Canada-France-Hawaii Telescope, operated jointly by the National Research Council of Canada, the Centre National de la Recherche Scientifique of France, and the University of Hawaii. Funding Information: 2 Visiting Astronomer at the Infrared Telescope Facility which is operated by the University of Hawaii under contract to the National Aeronautics and Space Administration. Funding Information: 3Operated by the Association of Universities for Research in Astronomy, Inc, under contract with the National Aeronautics and Space Administration. Funding Information: We thank the staff of the IRTF, especially the telescope operator David Griep, for making these observations possible. The CFHT observations were made possible by a generous grant of director{\textquoteright}s discretionary time by Pierre Couturier. E. E. would like to thank Peter Conti for numerous useful discussions. H. Y. wishes to thank CFHT for their hospitality while this work was being done. H. Y. is supported by an operating grant from NSERC of Canada.",
year = "1996",
doi = "10.1086/310182",
language = "English (US)",
volume = "466",
pages = "L71--L74",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "American Astronomical Society",
number = "2 PART II",
}