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1996PASP..108...81H - Publ. Astron. Soc. Pac., 108, 81-89 (1996/January-0)
ROSAT observations of the symbiotic stars PU Vulpeculae and FG Serpentis, and the cataclysmic variable V Sagittae.
HOARD D.W., WALLERSTEIN G. and WILLSON L.A.
Abstract (from CDS):
FG Serpentis was not detected during an 8467 s ROSAT PSPC pointed exposure on 1992 March 8-23 UT. Serendipitous X-ray sources detected nearby give an upper limit of ∼9.3 X 10^-4 ct/s for the X-ray emission from FG Ser. The post-outburst X-ray fluxes of FG Ser and PU Vul are compared to those of three other symbiotic novae, HM Sagittae, V1016 Cygni and RR Telescopii.
The eclipsing nova-like variable V Sagittae was serendipitously observed during the ROSAT exposure of PU Vul and found to have a count rate of 0.013 ± 0.003 cts/s, which is about the same as it showed during Einstein IPC observations in 1979-80. A period of 6.0 hr is detected in the X-ray data; this period is roughly half the length of the observed orbital period of V Sge.
Abstract Copyright: ∼
Journal keyword(s): Stars
Simbad objects: 7
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