A deep, narrow J-band search for protogalactic Lyα emission at redshifts z ∼ 9

被引：54

作者：

Willis, JP

Courbin, F

机构：

[1] Univ Victoria, Dept Phys & Astron, Victoria, BC V8P 1A1, Canada

[2] EPFL, Astrophys Lab, CH-1290 Chavannes Des Bois, Switzerland

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2005年 / 357卷 / 04期

关键词：

galaxies; high-redshift;

D O I：

10.1111/j.1365-2966.2005.08755.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a deep, narrow J-band search for protogalactic Lyalpha emission at redshifts z similar to 9. We combine an exceptionally deep image of the Hubble Deep Field South, obtained using a narrow-band filter centred on the wavelength 1.187 mum using the VLT/ISAAC facility, with existing deep, broad-band images covering optical to near-infrared wavelengths. We search for z similar to 9 Lyalpha-emitting galaxies displaying a significant narrow-band excess relative to the J(s) band that are undetected at optical wavelengths. We detect no sources consistent with this criterion to the 90 per cent point-source flux limit of the narrow-band image, F-NB = 3.28 x 10(-18) erg s(-1) cm(-2). The survey selection function indicates that we have sampled a volume of approximately 340 h(-3) Mpc(3) to a Lyalpha emission luminosity of 10(43) h(-2) erg s(-1). We conclude by considering the potential implications for the physics of the high-redshift Universe.

引用

页码：1348 / 1356

页数：9

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