Access to Astronomical Catalogues

← Click to display the menu
J/A+A/568/A127      Light curves of WASP-67 transit events     (Mancini+, 2014)

Physical properties of the WASP-67 planetary system from multi-colour photometry. Mancini L., Southworth J., Ciceri S., Calchi Novati S., Dominik M., Henning T., Jorgensen U.G., Korhonen H., Nikolov N., Alsubai K.A., Bozza V., Bramich D.M., D'Ago G., Figuera Jaimes R., Galianni P., Gu S.-H., Harpose K., Hinse T., Hundertmark M., Juncher D., Kains N., Popovas A., Rabus M., Rahvar S., Skottfelt J., Snodgrass C., Street R., Surdej J., Tsapras Y., Vilela C., Wang X.-B., Wertz O. <Astron. Astrophys. 568, A127 (2014)> =2014A&A...568A.127M
ADC_Keywords: Stars, double and multiple ; Planets ; Photometry Keywords: planetary systems - stars: fundamental parameters - techniques: photometric Abstract: The extrasolar planet WASP-67 b is the first hot Jupiter definitively known to undergo only partial eclipses. The lack of the second and third contact points in this planetary system makes it difficult to obtain accurate measurements of its physical parameters. Aims. By using new high-precision photometric data, we confirm that WASP-67 b shows grazing eclipses and compute accurate estimates of the physical properties of the planet and its parent star. Methods. We present high-quality, multi-colour, broad-band photometric observations comprising five light curves covering two transit events, obtained using two medium-class telescopes and the telescope-defocussing technique. One transit was observed through a Bessel-R filter and the other simultaneously through filters similar to Sloan griz. We modelled these data using jktebop. The physical parameters of the system were obtained from the analysis of these light curves and from published spectroscopic measurements. Results. All five of our light curves satisfy the criterion for being grazing eclipses. We revise the physical parameters of the whole WASP-67 system and, in particular, significantly improve the measurements of the planet's radius and density as compared to the values in the discovery paper. The transit ephemeris was also substantially refined. We investigated the variation of the planet's radius as a function of the wavelength, using the simultaneous multi-band data, finding that our measurements are consistent with a flat spectrum to within the experimental uncertainties. Description: 5 light curves of two transits of the extrasolar planetary system WASP-67, observed on 2012 June 4 and 2013 June 22, are presented. Four of the datasets were obtained using the MPG 2.2-m telescope, GROND camera and filters similar to Sloan g', r', i', z', at the ESO Observatory in La Silla (Chile). Another data set was obtained using the 1.54-m Danish telescope, DFOSC camera and Bessel-R filter at the ESO Observatory in La Silla (Chile). Objects: -------------------------------------------------------------- RA (2000) DE Designation(s) -------------------------------------------------------------- 19 42 58.51 -19 56 58.4 WASP-67 = 2MASS J19425852-1956585 -------------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file mpg2_2mg.dat 39 211 *Photometry of WASP-67 on 2012/06/04 (g MPG 2.2m) mpg2_2mr.dat 39 211 *Photometry of WASP-67 on 2012/06/04 (r MPG 2.2m) mpg2_2mi.dat 39 211 *Photometry of WASP-67 on 2012/06/04 (i MPG 2.2m) mpg2_2mz.dat 39 213 *Photometry of WASP-67 on 2012/06/04 (z MPG 2.2m) dk1_54m.dat 39 136 *Photometry of WASP-67 on 2013/06/22 (I DK 1.54m)
Note on *.dat: Correspond to full table2 of the paper.
See also: J/A+A/558/A55 : Trans. planetary system HATS-2 (Mohler-Fischer+, 2013) J/A+A/554/A28 : Transiting planetary system Qatar-1 (Covino+, 2013) J/A+A/549/A10 : Transiting planetary system GJ1214 (Harpsoe+, 2013) J/A+A/551/A11 : Transiting planetary system HAT-P-8 (Mancini+, 2013) J/MNRAS/420/2580 : Transiting planetary system HAT-P-13 (Southworth+, 2012) J/MNRAS/422/3099 : Transiting planetary system HAT-P-5 (Southworth+, 2012) J/A+A/527/A8 : Transiting planetary system WASP-7 (Southworth+, 2011) J/MNRAS/408/1680 : Transiting planetary system WASP-2 (Southworth+, 2010) J/MNRAS/396/1023 : Transiting planetary system WASP-5 (Southworth+, 2009) J/MNRAS/399/287 : Transiting planetary system WASP-4 (Southworth+, 2009) J/MNRAS/434/1300 : WASP-15 and WASP-16 light curves (Southworth+, 2013) J/MNRAS/426/1338 : Transiting planetary system WASP-17 (Southworth+, 2012) J/ApJ/707/167 : Transiting planetary system WASP-18 (Southworth+, 2009) J/MNRAS/436/2 : Light curves of WASP-19 transit events (Mancini+, 2013) J/A+A/557/A30 : Trans. planetary systems WASP-21 HAT-P-16 (Ciceri+, 2013) J/MNRAS/430/2932 : Transiting planetary system WASP-44 (Mancini+, 2013) J/A+A/562/A126 : Light curves of WASP-80 transit events (Mancini+, 2014) Byte-by-byte Description of file: *.dat
Bytes Format Units Label Explanations
1 A1 --- Band [grizI] Observed band 3- 15 F13.7 d BJD Barycentric JD for the midpoint of observation (BJD(TDB)-2400000) 18- 27 F10.7 mag dmag Differential magnitude of WASP-2 31- 39 F9.7 mag e_dmag Measurement error of the magnitude
Acknowledgements: Luigi Mancini, mancini(at), Max Planck Institute for Astronomy, Germany
(End) L. Mancini [Max Planck Inst. for Astron.], P. Vannier [CDS] 16-Jul-2014
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

catalogue service

© Université de Strasbourg/CNRS

    • Contact