The wide field imager Lyman-alpha search (WFILAS) for galaxies at redshift ∼5.7* I. A. spatially compact Lyα emitting galaxy at redshift 5.721

E. Westra*, D. Heath Jones, C. E. Lidman, R. M. Athreya, K. Meisenheimer, C. Wolf, T. Szeifert, E. Pompei, L. Vanzi

*Corresponding author for this work

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

We report the spectroscopic confirmation of a compact Lyα emitting galaxy at z = 5.721. A FORS2 spectrum of the source shows a strong asymmetric line with a flux of 5 × 10-17 erg s-1 cm -2, making it one of the brightest Lyα emitting galaxies at this redshift, and a line-of-sight velocity dispersion of 400 km s -1. We also have a tentative detection of a second, narrower component that is redshifted by 400 km s-1 with respect to the main peak. A FORS2 image shows that the source is compact, with a FWHM of 0″.75, which corresponds to 3.2 kpc at this redshift**. This source is a brighter example of J1236.8+6215 (Dawson et al. 2002, ApJ, 570, 92), another Lya emitting galaxy at z ∼ 5.2.

Original languageEnglish
Pages (from-to)L21-L24
Number of pages4
JournalAstronomy and Astrophysics
Volume430
Issue number2
DOIs
Publication statusPublished - Feb 2005
Externally publishedYes

Keywords

  • Galaxies: evolution
  • Galaxies: high-redshift
  • Galaxies: individual: J114334.98-014433.9
  • Galaxies: starburst

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