2010A&A...519A..74B


C.D.S. - SIMBAD4 rel 1.7 - 2020.12.02CET12:21:01

2010A&A...519A..74B - Astronomy and Astrophysics, volume 519, A74-74 (2010/9-1)

Chemical composition of semi-regular variable giants. II.

BRITAVSKIY N.E., ANDRIEVSKY S.M., KOROTIN S.A. and MARTIN P.

Abstract (from CDS):

The aim of this work was to derive the elemental abundances in four stars classified as semiregular variables of the type ``d'' (SRd). These stars should presumably belong to the Galactic halo population. Elemental abundances have been derived from both local thermodynamical equilibrium (LTE) and non-local thermodynamical equilibrium (NLTE) analyses, applied to high-resolution (R≃80000) spectra obtained with the CFHT ESPaDOnS spectrograph. We have derived the abundances of 29 chemical elements in V463 Her, V894 Her, CW CVn, and MS Hya, and arrived at the following conclusions. The stars of our programme have a chemical composition that does not agree with their presumable status as metal-deficient halo giants. All studied SRd giants have relative-to-solar elemental abundances typical of the thick/thin Galactic disc stars.

Abstract Copyright:

Journal keyword(s): stars: variables: general - stars: abundances

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 - 2021
#notes
1 V* IS Gem LP* 06 49 41.3137405540 +32 36 24.333374010   7.015 5.708     K2/4III 38 0
2 V* MS Hya LP* 08 19 14.3732608395 -07 33 29.378416692   8.60 6.94     M0/1III 11 0
3 V* CW CVn LP* 13 53 23.1050145473 +33 47 12.402959522   8.458 6.969     K5III 12 0
4 V* V894 Her LP* 16 23 35.6979816755 +21 03 27.129701756   9.20 7.997 8.62 6.849 K0 18 0
5 V* V463 Her LP* 17 11 33.6860040272 +16 24 39.191354534   9.45 8.46     K0III 15 0

    Equat.    Gal    SGal    Ecl

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2020.12.02-12:21:01

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