2014MNRAS.440.3016M


C.D.S. - SIMBAD4 rel 1.7 - 2020.03.29CEST11:20:17

2014MNRAS.440.3016M - Mon. Not. R. Astron. Soc., 440, 3016-3026 (2014/June-1)

Chemical abundance analysis of symbiotic giants - I. RW Hya and SY Mus.

MIKOLAJEWSKA J., GALAN C., HINKLE K.H., GROMADZKI M. and SCHMIDT M.R.

Abstract (from CDS):

The study of symbiotic systems is of considerable importance in our understanding of binary system stellar evolution in systems where mass-loss or transfer takes place. Elemental abundances are of special significance since they can be used to track mass exchange. However, there are few symbiotic giants for which the abundances are fairly well determined. Here, we present for the first time a detailed analysis of the chemical composition for the giants in the RW Hya and SY Mus systems. The analysis is based on high-resolution (R ∼ 50 000), high signal-to-noise (S/N), near-IR spectra. Spectrum synthesis employing standard local thermal equilibrium (LTE) analysis and atmosphere models was used to obtain photospheric abundances of CNO and elements around the iron peak (Sc, Ti, Fe, and Ni). Our analysis reveals a significantly sub-solar metallicity, [Fe/H] ∼ -0.75, for the RW Hya giant confirming its membership in the Galactic halo population and a near-solar metallicity for the SY Mus giant. The very low 12C/13C isotopic ratios, ∼ 6-10, derived for both objects indicate that the giants have experienced the first dredge-up.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): stars: abundances - stars: atmospheres - binaries: symbiotic - stars: individual: RW Hya - stars: individual: SY Mus - stars: late-type

Status at CDS:  

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 - 2020
#notes
1 V* AX Per Sy* 01 36 22.6996835649 +54 15 02.411289057   11.45 10.67 11.04   M3IIIep+A0 274 1
2 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14610 1
3 EM* AS 201 PN 08 31 42.8825036476 -27 45 31.541479213   13 11.80     F9III 86 0
4 V* SY Mus Sy* 11 32 09.9958009466 -65 25 11.458645897   11.97 10.20     M4 152 0
5 V* RW Hya Sy* 13 34 18.1290422733 -25 22 48.885732567   11.51 10.00     M1/2IIIe 186 0
6 BD-21 3873 Sy* 14 16 34.2916048270 -21 45 50.037192663   12.060 10.684     K2e 70 0
7 HD 330036 Em* 15 51 15.92914 -48 44 58.5409   13.09 11.28     F5III-IV 150 1
8 V* T CrB Sy* 15 59 30.1619486506 +25 55 12.607985109 2.69 2.10 2.00     M3III+p 643 0
9 V* AG Dra Sy* 16 01 41.0125687664 +66 48 10.131181273 11.50 11.06 9.74 8.52   K3IIIep 474 0
10 V* V934 Her LP* 17 06 34.5143100938 +23 58 18.652285813 11.20 9.16 7.62     M2III 116 0
11 V* V2116 Oph Sy* 17 32 02.1544831482 -24 44 44.125962969   20.78 18.4     M6IIIe 644 1
12 V* RS Oph No* 17 50 13.1592776879 -06 42 28.481553668   12.29 4.30     OB+M2ep 918 0
13 V* AR Pav Al* 18 20 27.8818737427 -66 04 42.931712420   11.36 7.40     B1 144 0
14 V* FN Sgr Sy* 18 53 54.7732843778 -18 59 40.660080929           M5IIIe 50 0
15 V* CH Cyg Sy* 19 24 33.0697620341 +50 14 29.057625755 8.14 8.77 7.08   5.345 M7IIIab+Be 736 0
16 V* CI Cyg Al* 19 50 11.8344401438 +35 41 03.000692799   11.97 9.90     Bep+M5III 403 0
17 V* LT Del Sy* 20 35 57.2353984617 +20 11 27.504214453           G6III 95 1
18 EM* StHA 190 Sy* 21 41 44.8880611733 +02 43 54.409367196   11.13 10.22     G5e 41 0
19 NAME Galactic Bulge reg ~ ~           ~ 3322 0

    Equat.    Gal    SGal    Ecl

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2020.03.29-11:20:17

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