2020A&A...641A.135S


C.D.S. - SIMBAD4 rel 1.7 - 2020.11.28CET21:14:06

2020A&A...641A.135S - Astronomy and Astrophysics, volume 641A, 135-135 (2020/9-1)

A wide angle view of the Sagittarius dwarf spheroidal galaxy. II. A CEMP-r/s star in the Sagittarius dwarf spheroidal galaxy.

SBORDONE L., HANSEN C.J., MONACO L., CRISTALLO S., BONIFACIO P., CAFFAU E., VILLANOVA S. and AMIGO P.

Abstract (from CDS):

We report on the discovery and chemical abundance analysis of the first CEMP-r/s star detected in the Sagittarius dwarf spheroidal galaxy (Sgr dSph) by means of UVES high-resolution spectra. The star, found in the outskirts of Sgr dSph, along the major axis of the main body, is a moderately metal-poor giant (Teff=4753K, logg=1.75, [Fe/H]=-1.55) with [C/Fe]=1.13, placing it in the so-called "high-carbon band", and strong s-process and r-process enrichment ([Ba/Fe]=1.4, [Eu/Fe]=1.01). Abundances of 29 elements from C to Dy were obtained. The chemical pattern appears to be best fitted by a scenario where an r-process pollution event pre-enriched the material out of which the star was born as secondary in a binary system whose primary evolved through the AGB phase, providing C- and s-process enrichment.

Abstract Copyright: © ESO 2020

Journal keyword(s): galaxies: abundances - galaxies: individual: Sgr dSph - Galaxy: abundances - stars: abundances - stars: chemically peculiar

VizieR on-line data: <Available at CDS (J/A+A/641/A135): alllines.dat allsynth.dat>

Simbad objects: 19

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Number of rows : 19

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 Sculptor Dwarf Galaxy G 01 00 09.4 -33 42 32   9.79 8.6 8.81   ~ 1139 4
2 2MASS J01001630-3342371 * 01 00 16.2939480511 -33 42 37.233911181   18.86 16.995   15.525 C 15 0
3 [MOW91] 21 * 02 40 04.4135355616 -34 27 11.599797253   19.946 18.37 17.414   ~ 12 0
4 NAME Segue 1 G 10 07 03.2 +16 04 25     15.3     ~ 367 1
5 [VGK2013] J100714.58+160154.5 RG* 10 07 14.5810491451 +16 01 54.578441827           ~ 10 0
6 GrW 170817 GWE 13 09 48.0850 -23 22 53.343           ~ 926 0
7 NGC 5053 GlC 13 16 27.09 +17 42 00.9     9.96     ~ 544 0
8 NGC 5634 GlC 14 29 37.28 -05 58 35.1   10.69 10.05     ~ 251 0
9 NAME UMi Galaxy G 15 09 11.34 +67 12 51.7   13.60 10.6     ~ 1194 0
10 V* V4334 Sgr NL* 17 52 32.69 -17 41 08.0   12.01       F2Ia 336 0
11 NAME SDG G 18 55 03.1 -30 28 42   4.5 3.6     ~ 1787 2
12 M 54 GlC 18 55 03.33 -30 28 47.5           ~ 918 0
13 GIU J190734.24-315102.1 * 19 07 34.248 -31 51 02.06     16.742   15.466 ~ 1 0
14 Cl Terzan 7 GlC 19 17 43.92 -34 39 27.8           ~ 367 0
15 Cl Arp 2 GlC 19 28 44.11 -30 21 20.3     12.41     ~ 304 0
16 Cl Terzan 8 GlC 19 41 44.41 -33 59 58.1     11.54     ~ 262 0
17 Cl Pal 12 GlC 21 46 38.84 -21 15 09.4     11.89     ~ 455 0
18 BPS BS 17569-0049 Pe* 22 04 58.3605638072 +04 01 32.135813469 14.503 14.25 13.36 12.805 12.259 ~ 28 0
19 NAME Local Group GrG ~ ~           ~ 7111 0

    Equat.    Gal    SGal    Ecl

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2020.11.28-21:14:06

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