2011A&A...536A..72S

Query : 2011A&A...536A..72S

2011A&A...536A..72S - Astronomy and Astrophysics, volume 536A72-72 (2011/12-1)

On Lyα emission in z ∼ 3-6 UV-selected galaxies.

SCHAERER D., DE BARROS S. and STARK D.P.

Abstract (from CDS):

Determining Lyα properties of distant galaxies is of great interest for various astrophysical studies. We examine how the strength of Lyα emission can be constrained from broad-band SED fits instead of relying on spectroscopy. We use our SED-fitting tool, which includes the effects of nebular emission and considers in particular Lyα emission as a free parameter, and we demonstrate our method with simulations of mock galaxies. With this tool we analyse a large sample of U, B, V, and i dropout galaxies with multi-band photometry. We find significant trends in the fraction of galaxies with Lyα emission increasing both with redshift z and towards fainter magnitude (at fixed z), and similar trends for the Lyα equivalent width. Our inferred Lyα properties are in good agreement with the available spectroscopic observations and other data. These results demonstrate that the strength of Lyα emission in distant star-forming galaxies can be inferred quantitatively from broad-band SED fits, at least statistically for sufficiently large samples with good photometric coverage.

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Journal keyword(s): galaxies: high-redshift - ultraviolet: galaxies - galaxies: starburst

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME GOODS Southern Field reg 03 32 28.0 -27 48 30           ~ 1623 1

Query : 2011A&A...536A..72S

Basic data :
NAME GOODS Southern Field -- Region defined in the Sky
Other object types: otypes_help 		reg ()
ICRS coord. (ep=J2000) : 		03 32 28.0 -27 48 30 [ ] D ~
FK4 coord. (ep=B1950 eq=1950) : 		03 30 22.4 -27 58 35 [ ]
Gal coord. (ep=J2000) : 		223.5732 -54.4374 [ ]
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Identifiers (4) :
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NAME GOODS South Field NAME GOODS Southern Field NAME GOODS-S Field NAME GOODS-South Field

References (1623 between 1850 and 2026) (Total 1623)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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