2007A&A...461.1103P


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.13CEST06:25:58

2007A&A...461.1103P - Astronomy and Astrophysics, volume 461, 1103-1106 (2007/1-3)

Discovery of a new cataclysmic variable through optical variability and X-ray emission.

PRETORIUS M.L. and KNIGGE C.

Abstract (from CDS):

We present discovery observations of the new cataclysmic variable star (CV) 1RXS J092737.4-191529, as well as spectra and photometry of SY Vol. The selection technique that turned up these two CVs is described; it should be efficient for finding dwarf novae with high outburst duty cycles. Two very common observational features of CVs, namely optical variability and X-ray emission, are combined to select targets for follow-up observations. Long-slit spectra were taken to identify CVs in the sample. Two out of three objects selected in this way are CVs. One of these is the known dwarf nova SY Vol, while the second system, 1RXS J092737.4-191529, is a new discovery. We present medium resolution spectra, UBVRI magnitudes, and high-speed photometry for both these CVs. Rapid flickering in the light curve of 1RXS J092737.4-191529 confirms the mass transferring binary nature of this object; it is probably a dwarf nova that was in quiescence during our observations.

Abstract Copyright:

Journal keyword(s): stars: dwarf novae - stars: novae, cataclysmic variables - stars: variables: general

Simbad objects: 11

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Number of rows : 11

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 V* WX Hyi CV* 02 09 50.8239743875 -63 18 39.830688329   10.70     13.038 ~ 195 0
2 V* LT Eri CV* 04 07 14.7816713667 -06 44 25.164770630           ~ 22 0
3 V* BI Ori CV* 05 23 51.7715783164 +01 00 30.625511962           ~ 34 0
4 V* SY Vol CV* 08 53 25.9464282661 -71 12 48.179687707 17.066   18.08 17.60 16.88 ~ 8 0
5 1RXS J092737.4-191529 CV* 09 27 37.4 -19 15 29 18.08 18.96 18.60 18.00 17.24 ~ 1 0
6 V* V803 Cen CV* 13 23 44.5334901172 -41 44 29.260966080   16.8 14.42     ~ 140 0
7 1RXS J152912.9-101623 X 15 29 12.9 -10 16 23       18.4   ~ 1 0
8 FASTT 762 CV* 16 13 32.5544144318 -00 03 31.027448574   15.5       ~ 8 0
9 NAME Galactic Center gam 17 45 39.60213 -29 00 22.0000           ~ 12181 0
10 V* GS Pav CV* 20 08 07.6207358110 -69 48 58.761431962 16.19 16.68 16.56     F5+sdB 20 0
11 V* TU Ind CV* 20 33 10.5680061739 -45 26 00.671224912           ~ 21 0

    Equat.    Gal    SGal    Ecl

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2021.05.13-06:25:58

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