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A limit on the number density of bright z≈ 7 galaxies

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Stanway, Elizabeth R., Bremer, M. N. (Malcolm N.), Squitieri, Valentina, Douglas, L. S. and Lehnert, M. D. (Matthew D.). (2008) A limit on the number density of bright z≈ 7 galaxies. Monthly Notices of the Royal Astronomical Society, Vol.386 (No.1). pp. 370-376. ISSN 0035-8711

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Abstract

We present a survey of bright optical dropout sources in two deep, multiwavelength surveys comprising 11 widely separated fields, aimed at constraining the galaxy luminosity function at z≈ 7 for sources at 5–10 L* (z= 6). Our combined survey area is 225 arcmin2 to a depth of JAB= 24.2 (3σ) and 135 arcmin2 to J= 25.3 (4σ). We find that infrared data longwards of 2 μm are essential for classifying optical dropout sources, and in particular for identifying cool Galactic star contaminants. Our limits on the number density of high-redshift sources are consistent with current estimates of the Lyman break galaxy luminosity function at z= 6.

Item Type: Journal Article
Subjects: Q Science > QB Astronomy
Divisions: Faculty of Science > Physics
Library of Congress Subject Headings (LCSH): Galaxies -- Evolution, Red shift, Starbursts
Journal or Publication Title: Monthly Notices of the Royal Astronomical Society
Publisher: Wiley
ISSN: 0035-8711
Official Date: 2008
Volume: Vol.386
Number: No.1
Page Range: pp. 370-376
Identification Number: 10.1111/j.1365-2966.2008.13030.x
Status: Peer Reviewed
Publication Status: Published
Funder: Science and Technology Facilities Council (Great Britain) (STFC)
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URI: http://wrap.warwick.ac.uk/id/eprint/40095

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