The Wide Field Imager Lyman-Alpha Search (WFILAS) for Galaxies at Redshift ~5.7: I. A Spatially Compact Lyman-alpha Emitting Galaxy at Redshift 5.721

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dc.creatorWestra, Eduard
dc.creatorJones, D. Heath
dc.creatorLidman, Chris E.
dc.creatorAthreya, Ramana M.
dc.creatorMeisenheimer, Klaus
dc.creatorWolf, Christian
dc.creatorSzeifert, Thomas
dc.creatorPompei, Emanuela
dc.creatorVanzi, Leonardo
dc.date2004-11-30
dc.date.accessioned2026-07-07T02:16:05Z
dc.date.available2026-07-07T02:16:05Z
dc.descriptionWe report the spectroscopic confirmation of a compact \lya emitting galaxy at $z=5.721$. A FORS2 spectrum of the source shows a strong asymmetric line with a flux of 5$\times10^{-17}$ erg s$^{-1}$ cm$^{-2}$, making it one of the brightest \lya 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\farcs5, which corresponds to 3.2 kpc at this redshift. This source is a brighter example of \object{J1236.8+6215} \citep{Dawson02}, another \lya\ emitting galaxy at $z\sim5.2$.
dc.descriptionAccepted by A&A, 4 pages, 4 figures. High resolution figures are available via http://www.mso.anu.edu.au/~westra/publications/
dc.identifierhttps://arxiv.org/abs/astro-ph/0411782
dc.identifierhttp://arxiv.org/abs/astro-ph/0411782
dc.identifierdoi:10.1051/0004-6361:200400126
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/8654
dc.subjectAstrophysics
dc.titleThe Wide Field Imager Lyman-Alpha Search (WFILAS) for Galaxies at Redshift ~5.7: I. A Spatially Compact Lyman-alpha Emitting Galaxy at Redshift 5.721
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