A search for Lyman Break Galaxies at z>8 in the NICMOS Parallel Imaging Survey

Details A search for Lyman Break Galaxies at z>8 in the NICMOS Parallel Imaging Survey A search for Lyman Break Galaxies at z>8 in the NICMOS Parallel Imaging Survey

2007-01-02

arxiv.org/abs/astro-ph/0701045v1

Astrophys.J.656:L1-L4,2007

Astronomy and Astrophysics

Astrophysics

Accepted to ApJ Letters

Scientific paper

10.1086/512066

We have selected 14 J-dropout Lyman Break Galaxy (LBG) candidates with J110 - H160 > 2.5 from the NICMOS Parallel Imaging Survey. This survey consists of 135 square arcminutes of imaging in 228 independent sight lines, reaching average 5 sigma sensitivities of J110 = 25.8 and H160 = 25.6 (AB). Distinguishing these candidates from dust reddened star forming galaxies at z ~ 2-3 is difficult, and will require longer wavelength observations. We consider the likelihood that any J-dropout LBGs exist in this survey, and find that if L*(z=9.5) is significantly brighter than L*(z=6) (a factor of four), then a few J-dropout LBGs are likely. A similar increase in luminosity has been suggested by Eyles et al. and Yan et al., but the magnitude of this increase is uncertain.

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