1999MNRAS.304..535M

Query : 1999MNRAS.304..535M

1999MNRAS.304..535M - Mon. Not. R. Astron. Soc., 304, 535-539 (1999/April-2)

The orbital parameters of three new subdwarf B binaries.

MORAN C., MAXTED P., MARSH R.R., SAFFER R. and LIVIO M.

Abstract (from CDS):

We determine the orbital parameters of the three subdwarf B (sdB) stars, PG 0101+039, PG 1432+159 and PG 2345+318. We find orbital periods of 13.6778 ±0.0002, 5.398±0.008 and 5.7827±0.0002 h, respectively. We calculate lower limits for the mass of the companion star in each case. We also suggest upper mass limits for the companions to PG 1432+159 and PG 2345+318 on the basis of the maximum size of the companion allowed by the Roche lobe geometry. The nature of the companion star is discussed but cannot be determined without further observations. We confirm the previously measured period for the sdB binary PG 1101+249 as 8.49 h.

Abstract Copyright: 1999, Royal Astronomical Society

Journal keyword(s): binaries: close - stars: individual: PG 0101+039 - stars: individual: PG 1101+249 - stars: individual: PG 1432+159 - stars: individual: PG 2345+318 - sub-dwarfs

CDS comments: KPD 0422+4521 misprint for 0422+5421

Simbad objects: 5

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Number of rows : 5
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 V* IQ Cam HS* 04 26 06.8650883976 +54 28 17.101122600 14.21 14.86 14.66     sdB 66 0
3 Feige 36 HS* 11 04 31.6443383808 +24 39 42.687580896   12.87 12.78     sdB 59 0
4 PG 1432+159 HS* 14 35 18.9439382472 +15 40 14.376188748   13.63       sdB 36 1
5 PG 2345+318 HS* 23 48 07.5058804680 +32 04 48.038131020   13.99 14.19 14.66   sdB 32 0

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