========================================================================== J/MNRAS/399/287 Transiting planetary system WASP-4 (Southworth+, 2009) The following files can be converted to FITS (extension .fit or fit.gz) wasp4.dat ========================================================================== Query from: http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=J/MNRAS/399/287 ==========================================================================
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Beginning of ReadMe : J/MNRAS/399/287 Transiting planetary system WASP-4 (Southworth+, 2009) ================================================================================ High-precision photometry by telescope defocussing. II. The transiting planetary system WASP-4. Southworth J., Hinse T.C., Burgdorf M.J., Dominik M., Hornstrup A., Jorgensen U.G., Liebig C., Ricci D., Thone C.C., Anguita T., Bozza V., Novati S.C., Harpsoe K., Mancini L., Masi G., Mathiasen M., Rahvar S., Scarpetta G., Snodgrass C., Surdej J., Zub M. <Mon. Not. R. Astron. Soc., 399, 287-294 (2009)> =2009MNRAS.399..287S ================================================================================ ADC_Keywords: Planets ; Photometry Keywords: stars: planetary systems - methods: data analysis - methods: observational - techniques: photometric Abstract: We present and analyse light curves of four transits of the Southern hemisphere extrasolar planetary system WASP-4, obtained with a telescope defocussed so the radius of each point spread function was 17 arcsec (44 pixels). This approach minimises both random and systematic errors, allowing us to achieve scatters of between 0.60 and 0.88mmag per observation over complete transit events. The light curves are augmented by published observations and analysed using the JKTEBOP code. The results of this process are combined with theoretical stellar model predictions to derive the physical properties of the WASP-4 system. WASP-4 is now one of the best-quantified transiting extrasolar planetary systems, and significant further progress requires improvements to our understanding of the physical properties of low-mass stars. Description: Light curves of four transit events of the transiting extrasolar planetary system WASP-4 are presented. The data were obtained using the Danish 1.5m telescope and DFOSC camera at ESO La Silla in 2008, with substantial telescope defocussing in order to improve the photometric precision of the observations. A Cousins R filter and exposure times of 120s were used. Objects: --------------------------------------------------------- RA (2000) DE Designation(s) --------------------------------------------------------- 23 34 15.1 -42 03 41 WASP-4 = USNO-B1.0 0479-0948995 ---------------------------------------------------------
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