2005A&A...437L..51A

Query : 2005A&A...437L..51A

2005A&A...437L..51A - Astronomy and Astrophysics, volume 437, L51-54 (2005/7-3)

Discovery of pulsation in a helium-rich subdwarf B star.

AHMAD A. and JEFFERY C.S.

Abstract (from CDS):

Helium-rich subdwarf B (He-sdB) stars form a very small inhomogeneous group of subluminous stars showing varying degrees of helium enrichment. They have been found in the field of our galaxy as well as in globular clusters. Here we report the first discovery of pulsation in a He-sdB star - LSIV-14°116. Two pulsation periods can be clearly identified (1950 and 2900s) and are more likely to be due to high-order non-radial g-mode oscillations than to radial or non-radial p-modes.

Abstract Copyright: ∼

Journal keyword(s): stars: chemically peculiar - stars: early-type - subdwarfs - stars: individual: LSIV-14°116 - stars: oscillations

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 - 2024 		#notes
1 LB 1766 HS* 04 59 18.7820628456 -53 52 54.594838668 10.88 12.25 12.91     sdBHe 18 0
2 PG 1605+072 HS* 16 08 03.6872637792 +07 04 28.748468964   12.53 12.83 13.18   sdB0.2VIHe3 133 0
3 PG 1716+426 HS* 17 18 03.8584522800 +42 34 12.562847292   13.69 13.97     sdB2VIIHe3 114 0
4 HD 160641 HS* 17 41 51.5791786632 -17 53 48.462200880 9.15 10.01 9.85 10.08 9.59 sdOC9.5II-IIIHe40 123 0
5 LS IV -14 116 HS* 20 57 38.8746228912 -14 25 43.991016852 11.63 12.73 13.02 13.28   sdB0.5VIIHe18 79 0
6 GSC2 S331330313746 PM* 20 57 41.4790865712 -14 26 12.368470488   16.0 15.0     ~ 1 0
7 GSC2 S331330313647 * 20 57 41.5953641016 -14 26 24.109848204   17.4 17.0     ~ 1 0

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