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- W3105360897 abstract "We have analyzed a sample of 25 extremely red H − [4.5] > 4 galaxies, selected using 4.5 μm data from the Spitzer SEDS survey and deep H-band data from the Hubble Space Telescope CANDELS survey, over ∼180 arcmin2 of the UKIDSS Ultra-Deep Survey field. Our aim is to investigate the nature of this rare population of mid-infrared (mid-IR) sources that display such extreme near-to-mid-IR colors. Using up to 17-band photometry (U through 8.0 μm), we have studied in detail their spectral energy distributions, including possible degeneracies in the photometric redshift/internal extinction (zphot–AV) plane. Our sample appears to include sources of very different nature. Between 45% and 75% of them are dust-obscured, massive galaxies at 3 < zphot < 5. All of the 24 μm detected sources in our sample are in this category. Two of these have , which at 3 < zphot < 5 suggests that they probably host a dust-obscured active galactic nucleus. Our sample also contains four highly obscured (AV > 5) sources at zphot < 1. Finally, we analyze in detail two zphot ∼ 6 galaxy candidates, and discuss their plausibility and implications. Overall, our red galaxy sample contains the tip of the iceberg of a larger population of z > 3 galaxies to be discovered with the future James Webb Space Telescope." @default.
- W3105360897 created "2020-11-23" @default.
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- W3105360897 date "2012-04-13" @default.
- W3105360897 modified "2023-10-17" @default.
- W3105360897 title "THE NATURE OF EXTREMELY RED <i>H</i> – [4.5] > 4 GALAXIES REVEALED WITH SEDS AND CANDELS" @default.
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- W3105360897 doi "https://doi.org/10.1088/2041-8205/750/1/l20" @default.
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