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


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.18CEST01:58:49

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 - 2021
#notes
1 LB 1766 HS* 04 59 18.7826339379 -53 52 54.591217752 10.88 12.25 12.91     sdBHe 14 0
2 PG 1605+072 HS* 16 08 03.6872880396 +07 04 28.747599362   12.53 12.83 13.18   sdB0.2VIHe3 123 0
3 PG 1716+426 HS* 17 18 03.8584285848 +42 34 12.566188858   13.69 13.97     sdB2VIIHe3 99 0
4 HD 160641 HS* 17 41 51.5794261316 -17 53 48.460430048 9.15 10.01 9.85 10.08 9.59 sdOC9.5II-IIIHe40 119 0
5 LS IV -14 116 HS* 20 57 38.8745387224 -14 25 43.995275738 11.63 12.73 13.02 13.28   sdB0.5VIIHe18 64 0
6 GSC2 S331330313746 PM* 20 57 41.4791607630 -14 26 12.368453892   16.0 15.0     ~ 1 0
7 GSC2 S331330313647 * 20 57 41.5955459414 -14 26 24.106842488   17.4 17.0     ~ 1 0

    Equat.    Gal    SGal    Ecl

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2021.04.18-01:58:49

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