2004A&A...416L...1T

Query : 2004A&A...416L...1T

2004A&A...416L...1T - Astronomy and Astrophysics, volume 416L1-4 (2004/3-3)

The nature of the Lyα-emission region of FDF-4691.

TAPKEN C., APPENZELLER I., MEHLERT D., NOLL S. and RICHLING S.

Abstract (from CDS):

In order to study the origin of the strong Lyα emission of high-redshift starburst galaxies we observed and modeled the rest-frame UV spectrum and the Lyα emission of the z=3.304 galaxy FDF-4691 (rest-frame EWLyα=103Å). The observations show that FDF-4691 is a young starburst galaxy with a (for this redshift) typical metallicity. The broad, double-peaked profile of the Lyα emission line can be explained assuming a highly turbulent emission region in the inner part of the starburst galaxy, and a surrounding extended shell of low-density neutral gas with a normal dust/gas ratio and with Galactic dust properties. The detection of the Lyα emission line is explained by the intrinsic broad Lyα emission and a low HI column density of the neutral shell. A low dust/gas ratio in the neutral shell is not needed to explain the strong Lyα line.

Abstract Copyright: ∼

Journal keyword(s): galaxies: high-redshift - galaxies: starburst - line: formation - galaxies: ISM

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 FDF 4691 EmG 01 06 04.42 -25 48 34.4   25.79       ~ 11 0

Query : 2004A&A...416L...1T

Basic data :
FDF 4691 -- Emission-line galaxy
Other object types: otypes_help 		EmG ()
ICRS coord. (ep=J2000) : 		01 06 04.42 -25 48 34.4 [ ] D 2003A&A...398...49H
FK4 coord. (ep=B1950 eq=1950) : 		01 03 39.74 -26 04 37.0 [ ]
Gal coord. (ep=J2000) : 		191.82475 -86.46933 [ ]
Radial velocity / Redshift / cz : 		V(km/s) 269083 [~] / z(~) 3.304 [~] / cz 990514 [~]
   D 2004A&A...416L...1T
Fluxes (1) :
B 25.79 [~] E ~
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Identifiers (1) :
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FDF 4691

References (11 between 1850 and 2026) (Total 11)
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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Velocities : 1   

   

External archives :

Data at NED - NASA/IPAC Extragalactic Database : FDF 4691

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