2010MNRAS.401.1850K

Query : 2010MNRAS.401.1850K

2010MNRAS.401.1850K - Mon. Not. R. Astron. Soc., 401, 1850-1856 (2010/January-3)

Two new variable sdB stars, HE 0218-3437 and LB 1516.

KOEN C., KILKENNY D., PRETORIUS M.L. and FREW D.J.

Abstract (from CDS):

We present photometry which shows that two known hot subdwarf stars, HE 0218-3437 and LB 1516, are variable. LB 1516 exhibits several frequencies in the range 12-25 cycles/d (periods of about 1-2 h) with amplitudes less than about 0.003 mag and appears to be a typical slowly pulsating sdB star.
Result. from a multisite campaign on HE 0218-3437 show the presence of two frequencies only, the lower amplitude variation an apparent subharmonic of the higher amplitude periodicity. It is likely that the star is in a binary system, and that the variability is due to ellipsoidal deformation of the primary star.

Abstract Copyright: © 2009 The Authors. Journal compilation © 2009 RAS

Journal keyword(s): stars: individual (HE 0218-3437, LB 1516) - stars: oscillations - stars: variables: other

Simbad objects: 6

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Number of rows : 6
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 Feige 11 HS* 01 04 21.6747168600 +04 13 37.054495956 10.847 11.826 12.065 12.183 12.324 sdB2VIHe4 136 0
2 HE 0218-3437 V* 02 20 59.7691316472 -34 23 35.317169052     13.39     ~ 12 0
3 V* IQ Cam HS* 04 26 06.8650883976 +54 28 17.101122600 14.21 14.86 14.66     sdB 66 0
4 Feige 48 HS* 11 47 14.4978515760 +61 15 31.789400364   13.12 13.28     sdB 125 0
5 KPD 1930+2752 HS* 19 32 14.8088063952 +27 58 35.445679608 12.80 13.75 13.82     sdB 167 0
6 LB 1516 HS* 23 01 56.1476771616 -48 03 48.474964296   12.74 13.02     sdB 33 0

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