2004A&A...422L..13K

Query : 2004A&A...422L..13K

2004A&A...422L..13K - Astronomy and Astrophysics, volume 422L13-17 (2004/7-4)

A Lymanα emitter at z = 6.5 found with slitless spectroscopy.

KURK J.D., CIMATTI A., DI SEREGO ALIGHIERI S., VERNET J., DADDI E., FERRARA A. and CIARDI B.

Abstract (from CDS):

We report the discovery of a Lymanα emitting galaxy at z=6.518. The single line was found in the 43arcmin2 VLT/FORS field by slitless spectroscopy limited to the atmospheric window at λ∼9100Å (sampling Lyα at 6.4<z<6.6). Its counterpart is undetected in a deep I band image and the line has an asymmetric appearance in a deeper follow-up spectrum. There are no plausible line identifications except for Lyα with a flux of 1.9x10–17erg/cm2/s and rest frame equivalent width >80Å. The lower limit to the star formation rate density at z=6.5 derived from our complete sample is 5x10–4M☉/yr/Mpc3, consistent with measurements in the Subaru Deep Field and Hubble Ultra Deep Field but approximately ten times higher than in the Large Area Lyman Alpha survey. This Lyα emitter is among the very small sample of highest redshift galaxies known.

Abstract Copyright: ∼

Journal keyword(s): galaxies: high-redshift - galaxies: formation - galaxies: starburst

Nomenclature: Table 1: KCS NNNN (Nos 1166, 1173, 1147).

CDS comments: First objects from the KCS catalog.

Simbad objects: 5

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Number of rows : 5
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME HCM 6A EmG 02 39 54.737 -01 33 32.24           ~ 50 0
2 KCS 1166 EmO 04 01 43.48 -37 45 09.1           ~ 1 0
3 KCS 1173 EmO 04 01 43.84 -37 45 08.9           ~ 1 0
4 KCS 1147 EmO 04 01 43.98 -37 45 09.1           ~ 1 0
5 LALA J142442+353400 EmO 14 24 42.24 +35 34 00.2           ~ 2 0

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