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Discovery of a Population of Evolved and Massive Galaxies at High Redshift

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Book cover The Impact of HST on European Astronomy

Part of the book series: Astrophysics and Space Science Proceedings ((ASSSP))

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Abstract

We present a new technique for identifying massive and evolved galaxies at z∼5. The technique is based on broad-band deep photometry, using the strength of Balmer Break features, which is shifted between the K-band and m 3.6 wavelengths at this redshift. The main criterion we use to identify these galaxies is therefore the K–m 3.6 colors. We found a total of 11 galaxies in the GOODS-S field at z∼5, with stellar masses between 1010 and 5×1011 M⊙ and ages >100 Myr. The existence of such a population of galaxies strongly constrains current galaxy formation scenarios. The implications of this population for formation of galaxies is discussed.

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References

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Author information

Authors and Affiliations

  1. Physics and Astronomy Department, University of California, 900 University Ave, Riverside, CA, 92508, USA

    Bahram Mobasher

  2. ESA/STScI, 3700 San Martin Drive, Baltimore, MD, 21218, USA

    Tommy Wiklind

Authors
  1. Bahram Mobasher
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  2. Tommy Wiklind
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Corresponding author

Correspondence to Bahram Mobasher .

Editor information

Editors and Affiliations

  1. (STSCI), Space Telescope Science Institute, San Martin Dr. 3700, Baltimore, 21218, U.S.A.

    F. Duccio Macchetto

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Mobasher, B., Wiklind, T. (2010). Discovery of a Population of Evolved and Massive Galaxies at High Redshift. In: Macchetto, F. (eds) The Impact of HST on European Astronomy. Astrophysics and Space Science Proceedings. Springer, Dordrecht. https://doi.org/10.1007/978-90-481-3400-7_40

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  • DOI: https://doi.org/10.1007/978-90-481-3400-7_40

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  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-90-481-3399-4

  • Online ISBN: 978-90-481-3400-7

  • eBook Packages: Physics and AstronomyPhysics and Astronomy (R0)

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