2009A&A...507..929S


C.D.S. - SIMBAD4 rel 1.7 - 2020.01.18CET09:57:44

2009A&A...507..929S - Astronomy and Astrophysics, volume 507, 929-937 (2009/11-4)

Orbital periods of cataclysmic variables identified by the SDSS. VI. The 4.5-h period eclipsing system SDSS J100658.40+233724.4.

SOUTHWORTH J., HICKMAN R.D.G., MARSH T.R., REBASSA-MANSERGAS A., GAENSICKE B.T., COPPERWHEAT C.M. and RODRIGUEZ-GIL P.

Abstract (from CDS):

We present time-resolved spectroscopy and photometry of SDSSJ100658.40+233724.4, which we have discovered to be an eclipsing cataclysmic variable with an orbital period of 0.18591324 days (267.71507min). The observed velocity amplitude of the secondary star is 276±7km/s, which an irradiation correction reduces to 258±12km/s. Doppler tomography of emission lines from the infrared calcium triplet supports this measurement. We have modelled the light curve using the lcurve code and Markov Chain Monte Carlo simulations, finding a mass ratio of 0.51±0.08. From the velocity amplitude and the light curve analysis we find the mass of the white dwarf to be 0.78±0.12M and the masses and radii of the secondary star to be 0.40±0.10M and 0.466±0.036R, respectively. The secondary component is less dense than a normal main sequence star but its properties are in good agreement with the expected values for a CV of this orbital period. By modelling the spectral energy distribution of the system we find a distance of 676±40pc and estimate a white dwarf effective temperature of 16500 ±2000K.

Abstract Copyright:

Journal keyword(s): stars: novae, cataclysmic variables - stars: dwarf novae - stars: binaries: eclipsing - stars: binaries: spectroscopic - stars: white dwarfs - stars: individual: SDSS J100658.40+233724.4

VizieR on-line data: <Available at CDS (J/A+A/507/929): caha.dat not.dat sp/*>

Simbad objects: 12

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Number of rows : 12

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 V* V363 Aur NL* 05 33 33.4591303805 +36 59 32.474128763     14.2     K0V 91 0
2 V* V347 Pup Al* 06 10 33.6585438847 -48 44 25.363237509   13.95 13.57 13.24 12.79 M0.5V 79 0
3 V* U Gem DN* 07 55 05.2323858391 +22 00 05.045435077   15.3 14.54     DA 1039 0
4 V* AC Cnc Al* 08 44 27.1122164614 +12 52 31.996499274   13.80 14.15     K1-3V 122 0
5 V* GY Cnc DN* 09 09 50.5407240020 +18 49 47.429782142           ~ 61 0
6 V* OY Car DN* 10 06 22.0792108747 -70 14 04.582997921           ~ 548 0
7 2MASS J10065842+2337245 CV* 10 06 58.4172560310 +23 37 24.467327120           D+M3e 17 0
8 V* EX Dra DN* 18 04 14.2486747659 +67 54 12.271788519   14.5 14.7     ~ 108 0
9 V* DQ Her No* 18 07 30.2510755201 +45 51 32.564649735   12.99 15.16 11.46   M3+Ve 953 1
10 V* EM Cyg DN* 19 38 40.1105232999 +30 30 28.313972620     11.90     ~ 240 0
11 Feige 110 HS* 23 19 58.3995050606 -05 09 56.170282845 10.360 11.45 11.50 11.970 12.145 sdO8VIIIHe5 539 1
12 V* IP Peg DN* 23 23 08.5362716048 +18 24 59.206210572           M2 353 0

    Equat.    Gal    SGal    Ecl

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2020.01.18-09:57:44

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