2005MNRAS.356.1117S

Query : 2005MNRAS.356.1117S

2005MNRAS.356.1117S - Mon. Not. R. Astron. Soc., 356, 1117-1122 (2005/January-3)

Towards a precision cosmology from starburst galaxies at z > 2.

SIEGEL E.R., GUZMAN R., GALLEGO J.P., LOPEZ M.O. and RODRIGUEZ HIDALGO P.

Abstract (from CDS):

This work investigates the use of a well-known empirical correlation between the velocity dispersion, metallicity and luminosity in Hβ of nearby HII galaxies to measure the distances to HII-like starburst galaxies at high redshifts. This correlation is applied to a sample of 15 starburst galaxies with redshifts between z= 2.17 and z= 3.39 to constrain Ωm, using data available from the literature. A best-fitting value of Ωm= 0.21+0.30–0.12in a Λ-dominated universe and of Ωm= 0.11+0.37–0.19in an open universe is obtained. A detailed analysis of systematic errors, their causes and their effects on the values derived for the distance moduli and Ωmis carried out. A discussion of how future work will improve constraints on Ωmby reducing the errors is also presented.

Abstract Copyright: 2004 RAS

Journal keyword(s): cosmological parameters - HII regions - galaxies: fundamental parameters - galaxies: high-redshift - galaxies: starburst - distance scale

CDS comments: In Table 1: Objects 1 and 6 to 15 are [PKS98] objects in Simbad, the objects 2 to 5 are [ESS2003] objects in Simbad.

Simbad objects: 18

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Number of rows : 18
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 SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
2 SAS-LBG CDFa-C1 G 00 53 34.73 +12 30 30.6           ~ 7 0
3 SAS-LBG Q0201-oB13 G 02 03 49.23 +11 36 10.7           ~ 17 0
4 [PKS98] Q0347-383 C5 G 03 49 43.5 -38 10 05           ~ 9 0
5 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
6 SAS-LBG B20902-C6 G 09 05 20.58 +34 09 07.7           ~ 14 0
7 SAS-LBG B20902-C12 G 09 05 43.83 +34 11 07.7           ~ 7 0
8 SAS-LBG Q1422-D81 G 14 24 31.48 +22 59 51.1       23.41   ~ 10 0
9 NAME MS 1512-cB58 AGN 15 14 22.2751 +36 36 25.674     20.64   20.35 ~ 326 0
10 FIRST J151422.4+363620 rG 15 14 22.482 +36 36 21.08           ~ 146 1
11 [ESS2003] Q1623-BX432 G 16 25 48.74 +26 46 47.0           ~ 10 0
12 [ESS2003] Q1623-MD107 G 16 25 53.88 +26 45 15.2           ~ 8 0
13 [ESS2003] Q1700-BX717 G 17 00 57.00 +64 12 23.7           ~ 13 0
14 [ESS2003] Q1700-MD103 G 17 01 00.21 +64 11 55.6           ~ 19 0
15 [SAD98] SSA 22a MD31 G 22 17 27.30 +00 18 09.5   24.33 23.60 23.56   ~ 14 0
16 SAS-LBG SSA22a-D3 EmG 22 17 32.40 +00 11 34.1       23.92   ~ 37 0
17 SAS-LBG SSA22a-MD41 G 22 17 39.97 +00 17 11.0           ~ 31 0
18 SAS-LBG DSF2237a-C2 G 22 40 08.29 +11 49 04.8           ~ 19 0

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