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


Query : 2009A&A...507..929S

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 - 2024
#notes
1 V* V363 Aur CV* 05 33 33.4591265880 +36 59 32.475580692     14.2     K0V 99 0
2 V* V347 Pup CV* 06 10 33.6583947384 -48 44 25.363374036   13.95 13.57 13.24 12.79 M0.5V 95 0
3 V* U Gem CV* 07 55 05.2323858391 +22 00 05.045435077   15.3 14.54     DA 1095 0
4 V* AC Cnc CV* 08 44 27.1121665272 +12 52 31.995783264   13.80 14.15     K1-3V 138 0
5 V* GY Cnc CV* 09 09 50.5407550968 +18 49 47.429496300           ~ 78 0
6 V* OY Car CV* 10 06 22.0793274312 -70 14 04.584660540           ~ 567 0
7 CRTS J100658.4+233724 CV* 10 06 58.4169543888 +23 37 24.466842948           D+M3e 28 0
8 V* EX Dra CV* 18 04 14.2486747659 +67 54 12.271788519   14.5 14.7     ~ 125 0
9 V* DQ Her CV* 18 07 30.2510391864 +45 51 32.564791872   14.605 14.443 14.800   M3+Ve 1005 1
10 V* EM Cyg CV* 19 38 40.1068970904 +30 30 28.332591012     11.90     ~ 253 0
11 Feige 110 HS* 23 19 58.3996844256 -05 09 56.171142864 10.360 11.45 11.50 11.970 12.145 sdO8VIIIHe5 630 1
12 V* IP Peg CV* 23 23 08.5362249504 +18 24 59.206884012           M2 378 0

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2023.11.28-23:56:09

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