/ftp/cats/J_A+A/510/A100



==========================================================================
J/A+A/510/A100      Four new SDSS eclipsing systems          (Southworth+, 2010)
The following files can be converted to FITS (extension .fit or fit.gz)
	stars.dat j*.dat
==========================================================================
Query from: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=J/A+A/510/A100
==========================================================================

drwxr-xr-x 20 cats archive 4096 Jan 29 2012 [Up] drwxr-xr-x 2 cats archive 4096 Dec 15 2013 [TAR file] -rw-r--r-- 1 cats archive 473 Apr 25 2010 .message -r--r--r-- 1 cats archive 5937 Apr 25 2010 ReadMe -rw-r--r-- 1 cats archive 237 Apr 25 2010 +footg5.gif -rw-r--r-- 1 cats archive 2163 Apr 25 2010 +footg8.gif -r--r--r-- 1 cats archive 4200 Feb 23 2010 j0310b.dat [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 4880 Feb 23 2010 j0743b.dat [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 7280 Feb 23 2010 j0746b.dat [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 14080 Feb 23 2010 j0750b.dat [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 6560 Feb 23 2010 j0750v.dat [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 7080 Feb 23 2010 j0758b.dat [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 9520 Feb 23 2010 j0906b.dat [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 7160 Feb 23 2010 j0906g.dat [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 3400 Feb 23 2010 j0906r.dat [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 10240 Feb 23 2010 j0924b.dat [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 3000 Feb 23 2010 j0924v.dat [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 22480 Feb 23 2010 j1152v.dat [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 30240 Feb 23 2010 j1524v.dat [txt] [txt.gz] [fits] [fits.gz] [html] -r--r--r-- 1 cats archive 725 Apr 25 2010 stars.dat [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe : J/A+A/510/A100 Four new SDSS eclipsing systems (Southworth+, 2010) ================================================================================ Orbital periods of cataclysmic variables identified by the SDSS. VII. Four new eclipsing systems. Southworth J., Copperwheat C.M., Gaensicke B.T., Pyrzas S. <Astron. Astrophys. 510, A100 (2010)> =2010A&A...510A.100S ================================================================================ ADC_Keywords: Binaries, eclipsing ; Planets ; Photometry Keywords: stars: dwarf novae - stars: novae, cataclysmic variables - stars: binaries: eclipsing - stars: white dwarfs Abstract: We present photometry of nine cataclysmic variable stars identified by the Sloan Digital Sky Survey, aimed at measuring the orbital periods of these systems. Four of these objects show deep eclipses, from which we measure their orbital periods. The light curves of three of the eclipsing systems are also analysed using the LCURVE code, and their mass ratios and orbital inclinations determined. SDSS J075059.97+141150.1 has an orbital period of 134.1564+/-0.0008min, making it a useful object with which to investigate the evolutionary processes of cataclysmic variables. SDSS J092444.48+080150.9 has a period of 131.2432+/-0.0014min and is probably magnetic. The white dwarf ingress and egress phases are very deep and short, and there is no clear evidence that this object has an accretion disc. SDSS J115207.00+404947.8 and SDSS J152419.33+220920.1 are nearly identical twins, with periods of 97.5+/-0.4 and 93.6+/-0.5min and mass ratios of 0.14+/-0.03 and 0.17+/-0.03, respectively. Their eclipses have well-defined white dwarf and bright spot ingress and egress features, making them excellent candidates for detailed study. All four of the orbital periods presented here are shorter than the 2-3 hour period gap observed in the known population of cataclysmic variables. Description: Light curves of four eclipsing cataclysmic variable stars and five non-eclipsing cataclysmic variables are presented. The data were obtained using the ESO/NTT/EFOSC2 and ING/WHT/ACAM telescopes and instruments. For the NTT a Tyson B filter was used (ESO filter #724) whereas for the WHT a Johnson V filter was used.

© Unistra/CNRS

Contact