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2001PASP..113..490W - Publ. Astron. Soc. Pac., 113, 490-500 (2001/April-0)
A search for binary hot subdwarfs. I. BVRI photometry of Palomar-Green survey sdO stars.
WILLIAMS T., McGRAW J.T. and GRASHUIS R.
Abstract (from CDS):
Nine binary candidates have been identified from a sample of 64 hot subdwarf sdO/OB/OC stars selected from the Palomar-Green Survey. Three of the binary candidates had been identified previously. The binary candidates emerged from BVRI photometric observations and were identified by their intrinsic color excesses in two-color plots and by comparison to synthetic binary system colors. The data presented here are the initial results of a larger program aimed at identifying helium-rich hot subdwarf binary systems suitable for more detailed investigation of their fundamental stellar parameters and evolutionary status.
Abstract Copyright: ∼
Journal keyword(s): Stars: Binaries: General - Stars: Fundamental Parameters - Stars: Horizontal-Branch
CDS comments: Table 1: designation 'NN' in column (1) not in SIMBAD. In Table 1 PG 10 36+434 misprint for PG 1036+433 and PG 1430-083 for PG 1430-082.
Simbad objects: 64
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