A Search for Lyman Break Galaxies at z > 8 in the NICMOS Parallel Imaging Survey | Zendy

Alaina Henry | Zendy; Matthew A. Malkan | Zendy; James Colbert | Zendy; Brian Siana | Zendy; Harry I. Teplitz | Zendy; Patrick J. McCarthy | Zendy; Lin Yan | Zendy

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

Author(s) -

Alaina Henry,

Matthew A. Malkan,

James Colbert,

Brian Siana,

Harry I. Teplitz,

Patrick J. McCarthy,

Lin Yan

Publication year - 2007

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/512066

Subject(s) - galaxy , physics , dropout (neural networks) , astrophysics , luminosity , sigma , star formation , astronomy , computer science , machine learning

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 135square arcminutes of imaging in 228 independent sight lines, reaching average 5sigma sensitivities of J110 = 25.8 and H160 = 25.6 (AB). Distinguishing thesecandidates from dust reddened star forming galaxies at z ~ 2-3 is difficult,and will require longer wavelength observations. We consider the likelihoodthat any J-dropout LBGs exist in this survey, and find that if L*(z=9.5) issignificantly brighter than L*(z=6) (a factor of four), then a few J-dropoutLBGs are likely. A similar increase in luminosity has been suggested by Eyleset al. and Yan et al., but the magnitude of this increase is uncertain.Comment: Accepted to ApJ Letter

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