TY - JOUR
T1 - Three Lyα emitters at z ≈ 6
T2 - Early GMOS/gemini data from the GLARE project
AU - Stanway, Elizabeth R.
AU - Glazebrook, Karl
AU - Bunker, Andrew J.
AU - Abraham, Roberto G.
AU - Hook, Isobel
AU - Rhoads, James
AU - McCarthy, Patrick J.
AU - Boyle, Brian
AU - Colless, Matthew
AU - Crampton, David
AU - Couch, Warrick
AU - Jørgensen, Inger
AU - Malhotra, Sangeeta
AU - Murowinski, Rick
AU - Roth, Kathy
AU - Savaglio, Sandra
AU - Tsvetanov, Zlatan
N1 - Funding Information:
The work done in this Letter was based on observations obtained at the Gemini Observatory, which is operated by AURA, Inc., under a cooperative agreement with the NSF on behalf of the Gemini partnership: NSF (US), PPARC (UK), NRC (Canada), CONICYT (Chile), ARC (Australia), CNPq (Brazil), and CONICET (Argentina). K. G. and S. S. acknowledge generous funding from the David and Lucille Packard Foundation. The work done in this Letter was also based on observations made with the NASA/ESA Hubble Space Telescope, obtained at the STScI, which is operated by AURA, Inc., under NASA contract NAS5-26555.
PY - 2004/3/20
Y1 - 2004/3/20
N2 - We report spectroscopic detection of three z ∼ 6 Lyα-emitting galaxies, in the vicinity of the Hubble Ultra Deep Field, from the early data of the Gemini Lyman Alpha at Reionisation Era (GLARE) project. Two objects, GLARE 3001 (z = 5.79) and GLARE 3011 (z = 5.94), are new detections and are fainter in z′ (z′AB = 26.37 and 27.15) than any Lyman break galaxy previously detected in Lyα. A third object, GLARE 1042 (z = 5.83), has previously been detected in line emission from the ground; we report here a new spectroscopic continuum detection. Gemini/GMOS-South spectra of these objects, obtained using nod and shuffle, are presented together with a discussion of their photometric properties. All three objects were selected for spectroscopy via the i-drop Lyman break technique, the two new detections from the GOODS version 1.0 imaging data. The red i′-z′ colors and high equivalent widths of these objects suggest a high-confidence z > 5 Lyα identification of the emission lines. This brings the total number of known z > 5 galaxies within 9′ of the Hubble Ultra Deep Field to four, of which three are at the same redshift (z = 5.8 within 2000 km s-1), suggesting the existence of a large-scale structure at this redshift.
AB - We report spectroscopic detection of three z ∼ 6 Lyα-emitting galaxies, in the vicinity of the Hubble Ultra Deep Field, from the early data of the Gemini Lyman Alpha at Reionisation Era (GLARE) project. Two objects, GLARE 3001 (z = 5.79) and GLARE 3011 (z = 5.94), are new detections and are fainter in z′ (z′AB = 26.37 and 27.15) than any Lyman break galaxy previously detected in Lyα. A third object, GLARE 1042 (z = 5.83), has previously been detected in line emission from the ground; we report here a new spectroscopic continuum detection. Gemini/GMOS-South spectra of these objects, obtained using nod and shuffle, are presented together with a discussion of their photometric properties. All three objects were selected for spectroscopy via the i-drop Lyman break technique, the two new detections from the GOODS version 1.0 imaging data. The red i′-z′ colors and high equivalent widths of these objects suggest a high-confidence z > 5 Lyα identification of the emission lines. This brings the total number of known z > 5 galaxies within 9′ of the Hubble Ultra Deep Field to four, of which three are at the same redshift (z = 5.8 within 2000 km s-1), suggesting the existence of a large-scale structure at this redshift.
UR - http://www.scopus.com/inward/record.url?scp=2442502681&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=2442502681&partnerID=8YFLogxK
U2 - 10.1086/383523
DO - 10.1086/383523
M3 - Article
AN - SCOPUS:2442502681
SN - 0004-637X
VL - 604
SP - L13-L16
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 1 II
ER -