2005A&A...441..141M


Query : 2005A&A...441..141M

2005A&A...441..141M - Astronomy and Astrophysics, volume 441, 141 (2005/10-1)

The Ital-FLAMES survey of the Sagittarius dwarf spheroidal galaxy. I. Chemical abundances of bright RGB stars.

MONACO L., BELLAZZINI M., BONIFACIO P., FERRARO F.R., MARCONI G., PANCINO E., SBORDONE L. and ZAGGIA S.

Abstract (from CDS):

We present iron and α element (Mg, Ca, Ti) abundances for a sample of 15 Red Giant Branch stars belonging to the main body of the Sagittarius dwarf Spheroidal galaxy. Abundances have been obtained from spectra collected using the high resolution spectrograph FLAMES-UVES mounted at the VLT. Stars of our sample have a mean metallicity of [Fe/H]=-0.41±0.20 with a metal-poor tail extending to [Fe/H]=-1.52. The α element abundance ratios are slightly subsolar for metallicities higher than [Fe/H]>-1, suggesting a slow star formation rate. The [α/Fe] of stars having [Fe/H]←1 are compatible to what observed in Milky Way stars of comparable metallicity.

Abstract Copyright:

Journal keyword(s): stars: atmospheres - Galaxy: abundances - galaxies: evolution - galaxies: dwarf - galaxies: individual: Sgr dSph

Simbad objects: 5

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Number of rows : 5
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 NAME Sagittarius Stream St* 02 22 +00.0           ~ 888 0
2 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17643 0
3 M 54 GlC 18 55 03.33 -30 28 47.5           ~ 1079 0
4 NAME SDG G 18 55 19.0 -30 32 43   4.5 3.6     ~ 2222 2
5 NAME Local Group GrG ~ ~           ~ 8500 0

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