2003A&A...399.1183B


C.D.S. - SIMBAD4 rel 1.7 - 2021.06.20CEST10:02:08

2003A&A...399.1183B - Astronomy and Astrophysics, volume 399, 1183-1192 (2003/3-1)

Automatic abundance analysis of high resolution spectra.

BONIFACIO P. and CAFFAU E.

Abstract (from CDS):

We describe an automatic procedure for determining abundances from high resolution spectra. Such procedures are becoming increasingly important as large amounts of data are delivered from 8 m telescopes and their high-multiplexing fiber facilities, such as FLAMES on ESO-VLT. The present procedure is specifically targeted for the analysis of spectra of giants in the Sgr dSph; however, the procedure may be, in principle, tailored to analyse stars of any type. Emphasis is placed on the algorithms and on the stability of the method; the external accuracy rests, ultimately, on the reliability of the theoretical models (model-atmospheres, synthetic spectra) used to interpret the data. Comparison of the results of the procedure with the results of a traditional analysis for 12 Sgr giants shows that abundances accurate at the level of 0.2dex, comparable with that of traditional analysis of the same spectra, may be derived in a fast and efficient way. Such automatic procedures are not meant to replace the traditional abundance analysis, but as an aid to extract rapidly a good deal of the information contained in the spectra.

Abstract Copyright:

Journal keyword(s): methods: data analysis - methods: numerical - stars: abundances - stars: atmospheres - galaxies: abundances

Simbad objects: 12

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Number of rows : 12

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 [MBC98a] Sgr1 894 * 18 53 36.8569067849 -30 29 54.320694992     18.34     ~ 4 0
2 2MASS J18533874-3029290 * 18 53 38.75 -30 29 29.1     18.09     ~ 4 0
3 2MASS J18534573-3025574 * 18 53 45.74 -30 25 57.5     18.04     ~ 4 0
4 [MBC98a] Sgr1 628 * 18 53 47.9311670942 -30 26 14.660001488     18.00     ~ 4 0
5 [MBC98a] Sgr1 717 * 18 53 48.05 -30 29 38.1     18.10     ~ 4 0
6 [BHM2000] 143 * 18 53 48.13 -30 32 00.8     18.15     ~ 7 0
7 [BHM2000] 139 * 18 53 48.6161390693 -30 30 48.952220377     18.33     ~ 7 0
8 [MBC98a] Sgr1 432 * 18 53 50.7811470066 -30 27 27.501908453     17.55     ~ 5 0
9 2MASS J18535108-3026483 * 18 53 51.09 -30 26 48.4     18.01     ~ 4 0
10 2MASS J18535171-3026497 * 18 53 51.72 -30 26 49.8     18.39     ~ 4 0
11 [MBC98a] Sgr1 716 * 18 53 52.9946706104 -30 27 12.967748480     18.10     ~ 4 0
12 [MBC98a] Sgr1 867 * 18 53 53.02 -30 27 29.2     18.30     ~ 4 0

    Equat.    Gal    SGal    Ecl

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