Volume 430, Number 2, February I 2005
|Page(s)||L21 - L24|
|Published online||20 January 2005|
Letter to the Editor
I. A spatially compact Lyα emitting galaxy at redshift 5.721
Research School of Astronomy & Astrophysics, The Australian National University, Weston Creek ACT 2611, Australia e-mail: [westra;heath]@mso.anu.edu.au
2 European Southern Observatory, Casilla 19001, Santiago 19, Chile e-mail: [clidman;tszeifer;epompei;lvanzi]@eso.org
3 National Centre for Radio Astrophysics, Tata Institute of Fundamental Research Pune University Campus, Post Bag 3, Ganeshkhind Pune 411007, India e-mail: firstname.lastname@example.org
4 Max Planck Institute für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany e-mail: email@example.com
5 Department of Astrophysics, Denys Wilkinson Building, University of Oxford, Keble Road, Oxford, OX1 3RH, UK e-mail: firstname.lastname@example.org
Accepted: 26 November 2004
We report the spectroscopic confirmation of a compact Lyα emitting galaxy at . A FORS2 spectrum of the source shows a strong asymmetric line with a flux of 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 05, which corresponds to 3.2 kpc at this redshift. This source is a brighter example of J1236.8+6215 ([CITE], ApJ, 570, 92), another Lyα emit ting galaxy at .
Key words: galaxies: high-redshift / galaxies: evolution / galaxies: starburst / galaxies: individual: J114334.98-014433.9
© ESO, 2005
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