2006MNRAS.369.1677P

Query : 2006MNRAS.369.1677P

2006MNRAS.369.1677P - Mon. Not. R. Astron. Soc., 369, 1677-1682 (2006/July-2)

Abundance analysis of the cool extreme helium star LSS 3378.

PANDEY G. and REDDY B.E.

Abstract (from CDS):

Abundance analysis of the cool extreme helium (EHe) star LSS3378 is presented. The abundance analysis is done using local thermodynamic equilibrium (LTE) line formation and LTE model atmospheres constructed for EHe stars.

The atmosphere of LSS3378 shows evidence of H-burning, He-burning, and s-process nucleosynthesis. The derived abundances of iron peak and α-elements indicate the absence of selective fractionation or any other processes that can distort chemical composition of these elements. Hence, the Fe abundance [log ε(Fe) = 6.1] is adopted as an initial metallicity indicator. The measured abundances of LSS3378 are compared with those of R Coronae Borealis (RCB) stars and with rest of the EHe stars as a group.


Abstract Copyright: 2006 The Authors. Journal compilation © 2006 RAS

Journal keyword(s): stars: abundances - stars: AGB and post-AGB - stars: chemically peculiar - stars: evolution

VizieR on-line data: <Available at CDS (J/MNRAS/369/1677): tablea1.dat>

Simbad objects: 11

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Number of rows : 11
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 V* V354 Nor Pu* 15 38 59.2502866152 -48 35 57.899036220 11.57 11.95 11.48 11.37   B 37 0
2 HD 144941 pA* 16 09 24.5513020968 -27 13 38.184011148 9.45 10.17 10.02     B8 96 1
3 V* V652 Her pA* 16 48 04.6934854032 +13 15 42.420402252   10.31 10.51     ~ 147 0
4 CD-46 11775 pA* 17 42 33.9915492936 -46 58 48.829063584   11.14 11.27     OB+ 43 0
5 LS IV -01 2 Pu* 17 51 26.8365068760 -01 43 21.127711008 10.88 11.4 10.9     OB+ 52 0
6 V* NO Ser Pu* 18 03 55.5266289144 -01 00 23.228086608 10.53 10.7 10.3     B 65 0
7 LS IV +06 2 HS* 18 06 55.4522031744 +06 21 57.246453756   12.11 12.14 12.32   sdBC1VHe39 37 0
8 V* PV Tel s?b 18 23 14.6623123440 -56 37 44.138664012 8.60 9.20 9.30     B5?I?pec 130 0
9 V* V4732 Sgr Pu* 18 59 39.5771671848 -14 26 17.543500548 11.19 11.5 10.9     OB+ 42 0
10 V* V1920 Cyg Pu* 19 45 17.2712347176 +33 58 26.596281540 9.81 10.41 10.18   10.134 B2/3 52 0
11 V* FQ Aqr Pu* 20 51 21.3360113136 +02 18 46.360439064 9.18 9.62 9.52     F 71 0

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