SIMBAD references

2017MNRAS.466.5020H - Mon. Not. R. Astron. Soc., 466, 5020-5032 (2017/April-3)

Three new pulsating sdB stars discovered with SuperWASP.

HOLDSWORTH D.L., OSTENSEN R.H., SMALLEY B. and TELTING J.H.

Abstract (from CDS):

We present an analysis of three new pulsating subdwarf B stars discovered in the Super Wide Angle Search for Planets archive. Two of the stars, J1938+5609 and J0902-0720, are p-mode pulsators; J1938+5609 shows a pulsation at 231.62 d–1 (P = 373 s; 2681 µHz) with an amplitude of 4 mmag, whereas J0902-0720 pulsates at frequencies 636.74 (P = 136 s; 7370 µHz) and 615.34 d–1 (P = 140 s; 7122 µHz), with amplitudes 7.27 and 1.53 mmag, respectively. The third star, J2344-3427, is a hybrid pulsator with a p-mode frequency at 223.16 d–1 (P = 387 s; 2583 µHz) and a corresponding amplitude of 1.5 mmag, and g modes in the frequency range 8.68-28.56 d–1 (P = 3025-9954 s; 100–331 µHz) and amplitudes between 0.76 and 1.17 mmag. Spectroscopic results place J1938+5609 and J2344-3427 among the long-period or hybrid pulsators, suggesting there may be further modes in these stars below our detection limits, with J0902-0720 placed firmly amongst the p-mode pulsators.

Abstract Copyright: © 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): asteroseismology - techniques: photometric - stars: oscillations - subdwarfs - subdwarfs

CDS comments: PG 0865+121 is a misprint for PG 0856+121.

Simbad objects: 113

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2019.10.19-15:48:58

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