GRB 070714B-Discovery of the Highest Spectroscopically Confirmed Short Burst Redshift

J. F. Graham, A. S. Fruchter, A. J. Levan, M. Nysewander, N. R. Tanvir, T. Dahlen, D. Bersier, A. Pe'Er

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Gemini Nod & Shuffle spectroscopy on the host of the short GRB 070714B shows a single emission line at 7167 Å which, based on a grizJHK photometric redshift, we conclude is the 3727 Å [O II] line. This places the host at a redshift of z=.923 exceeding the previous record for the highest spectroscopically confirmed short burst redshift of z=.546 held by GRB 051221. This dramatically moves back the time at which we know short bursts were being formed, and suggests that the present evidence for an old progenitor population may be observationally biased.

Original languageEnglish
Title of host publicationGamma-Ray Bursts 2007 - Proceedings of the Santa Fe Conference
Pages289-292
Number of pages4
DOIs
StatePublished - 2008
Externally publishedYes
EventSanta Fe Conference on Gamma-Ray Bursts 2007, GRB 2007 - Santa Fe, NM, United States
Duration: 5 Nov 20079 Nov 2007

Publication series

NameAIP Conference Proceedings
Volume1000
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceSanta Fe Conference on Gamma-Ray Bursts 2007, GRB 2007
Country/TerritoryUnited States
CitySanta Fe, NM
Period5/11/079/11/07

Keywords

  • Gamma-Ray Burst Host Galaxies
  • Gamma-Ray Burst Redshifts
  • Gamma-Ray Bursts
  • Short Gamma-Ray Bursts

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