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


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.03CET00:43:35

2011A&A...536A..72S - Astronomy and Astrophysics, volume 536A, 72-72 (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 - 2021
#notes
1 NAME GOODS Southern Field reg 03 32 28.0 -27 48 30           ~ 1108 1

    Equat.    Gal    SGal    Ecl

C.D.S. - SIMBAD4 rel 1.7 - 2021.03.03CET00:43:35

Available data : Basic data  •  Identifiers  •  Plot & images  •  Bibliography  •  Measurements  •  External archives  •  Notes  •  Annotations


Basic data :
NAME GOODS Southern Field -- Region defined in the sky
Origin of the objects types :

(Ref) Object type as listed in the reference "Ref"
(acronym) Object type linked to the acronym according to the original reference
() Anterior to 2007, before we can link the objet type to a reference, or given by the CDS team in some particular cases

Other object types:
reg ()
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
ICRS coord. (ep=J2000) :
03 32 28.0 -27 48 30 [ ] D ~
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
FK4 coord. (ep=B1950 eq=1950) :
03 30 22.4 -27 58 35 [ ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
Gal coord. (ep=J2000) :
223.5732 -54.4374 [ ]
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notes:



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NAME GOODS South Field NAME GOODS Southern Field NAME GOODS-S Field NAME GOODS-South Field

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References (1108 between 1850 and 2021) (Total 1108)
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2021.03.03-00:43:36

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