2005PASP..117.1386P

Query : 2005PASP..117.1386P

2005PASP..117.1386P - Publ. Astron. Soc. Pac., 117, 1386-1393 (2005/December-0)

Spectroscopy of four cataclysmic variables with periods above 7 hours.

PETERS C.S. and THORSTENSEN J.R.

Abstract (from CDS):

We present spectroscopy of four cataclysmic variables. Using radial velocity measurements, we find orbital periods Porbfor the first time: for GY Hya, 0.347230(9) days, for SDSS J204448-045929, 1.68(1) days, for V392 Hya, 0.324952(5) days, and for RX J1951.7+3716, 0.492(1) days. We also detect the spectra of the secondary stars, estimate their spectral types, and derive distances based on surface brightness and Roche lobe constraints.

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Journal keyword(s): Stars: Binaries: Spectroscopic - stars: dwarf novae - Stars: Novae, Cataclysmic Variables

Simbad objects: 4

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Number of rows : 4
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 V* V392 Hya CV* 10 58 56.4235808976 -29 14 40.763567580   16.38       ~ 25 0
2 V* GY Hya CV* 14 30 30.4713679704 -25 52 37.987029660           K4 23 0
3 V* V2690 Cyg CV* 19 51 47.4966319272 +37 16 47.763588648   15.50       K7.5 16 0
4 SDSS J204448.92-045928.8 CV* 20 44 48.9225407448 -04 59 28.809306348           K4/5e 23 0

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