2006BaltA..15..151K

Query : 2006BaltA..15..151K

2006BaltA..15..151K - Baltic Astronomy, 15, 151-158 (2006/February-0)

Spectroscopic analysis of sdB binaries from the SPY project.

KARL C., HEBER U., NAPIWOTZKI R. and GEIER S.

Abstract (from CDS):

In the course of our search for double degenerate binaries as potential progenitors of type Ia supernovae with the ESO VLT several new subdwarf B (sdB) binaries were discovered. In this paper, we present detailed analysis of six radial velocity variable sdB stars. Radial velocity curves have been measured. From the mass functions we derive lower limits to the masses of the unseen companions and discuss their nature. In addition, effective temperatures, surface gravities, helium abundances and metal abundances were determined.

Abstract Copyright: ∼

Journal keyword(s): binaries: spectroscopic - stars: atmospheres - stars: hot subdwarfs

Simbad objects: 7

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Number of rows : 7
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 GD 656 HS* 00 51 03.9222688464 -19 59 59.319419640   14.56 14.83 15.01   sdBHe0 32 0
2 HE 0532-4503 HS* 05 33 40.5164632128 -45 01 35.266985868 14.89 15.86 16.08     sdB 23 0
3 HE 0929-0424 HS* 09 32 02.1130203840 -04 37 36.937709652   16.11 16.16     sdB 22 0
4 PG 1448-052 HS* 14 51 13.1204893176 -05 23 16.874665800   14.96       sdO8VIIHe0 18 0
5 KPD 1930+2752 HS* 19 32 14.8088063952 +27 58 35.445679608 12.80 13.75 13.82     sdB 167 0
6 BPS CS 30343-0091 HS* 21 38 44.1996638736 -37 36 14.997662460 12.66 13.68 13.9     sdB 22 0
7 HE 2150-0238 HS* 21 52 35.5115148504 -02 24 29.523285216   15.8   16.2   sdB 15 0

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