2022AJ....163..221J


Query : 2022AJ....163..221J

2022AJ....163..221J - Astron. J., 163, 221-221 (2022/May-0)

Optical Characterization of Two Cataclysmic Variables: RBS 0490 and SDSS J075939.79+191417.3.

JOSHI A., PANDEY J.C., RAWAT N., RAJ A., WANG W. and SINGH H.P.

Abstract (from CDS):

We present optical photometric and spectroscopic observations of two cataclysmic variables (CVs), namely RBS 0490 and SDSS J075939.79+191417.3. The optical variations of RBS 0490 have been found to occur with a period of 1.689 ± 0.001 hr, which appears to be the probable orbital period of the system. Present photometric observations of SDSS J075939.79+191417.3 confirm and refine the previously determined orbital period as 3.14240928 ± 0.00000096 hr. The presence of long-duration eclipse features in the light curves of SDSS J075939.79+191417.3 indicates that eclipses might be due to an accretion disk and bright spot. The orbital inclination of SDSS J075939.79+191417.3 is estimated to be ∼78° using the eclipse morphology. The phased light-curve variations during the orbital cycle of RBS 0490 provide evidence of emission from an independent second accretion region or a second fainter pole. Optical spectra of RBS 0490 and SDSS J075939.79+191417.3 show the presence of strong Balmer and weak He II (λ4686) emission lines, along with the detection of strong Hβ emission lines with a large equivalent width. The characteristic features of RBS 0490 seem to favor low-field polars, while SDSS J075939.79+191417.3 appears to be similar to nonmagnetic systems.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Cataclysmic variable stars

Simbad objects: 6

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Number of rows : 6
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* UZ For CV* 03 35 28.6518733656 -25 44 21.768755424           M4.5 279 0
2 1RXS J035410.4-165244 CV* 03 54 10.3093825488 -16 52 50.034416160     17.47     DQ 21 1
3 SDSS J075939.79+191417.2 CV* 07 59 39.7852238802 +19 14 17.253277417   18.63 18.65     ~ 16 1
4 V* VV Pup CV* 08 15 06.8009599464 -19 03 17.765706024     13.90     M7V 413 0
5 V* DP Leo CV* 11 17 15.9239894616 +17 57 41.690453220           ~ 237 1
6 V* QS Tel CV* 19 38 35.8144163880 -46 12 57.106344420           ~ 120 0

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