J/MNRAS/428/3671 Transiting planet WASP-19b (Tregloan-Reed+, 2013)
Transits and starspots in the WASP-19 planetary system.
Tregloan-Reed J., Southworth J., Tappert C.
<Mon. Not. R. Astron. Soc., 428, 3671-3679 (2013)>
=2013MNRAS.428.3671T 2013MNRAS.428.3671T (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Planets ; Photometry
Keywords: stars: fundamental parameters - stars: individual: WASP-19 -
planetary systems - starspots
Abstract:
We have developed a new model for analysing light curves of planetary
transits when there are starspots on the stellar disc. Because the
parameter space contains a profusion of local minima we developed a
new optimization algorithm which combines the global minimization
power of a genetic algorithm and the Bayesian statistical analysis of
the Markov chain. With these tools we modelled three transit light
curves of WASP-19. Two light curves were obtained on consecutive
nights and contain anomalies which we confirm as being due to the same
spot. Using these data we measure the star's rotation period and
velocity to be 11.76±0.09d and 3.88±0.15km/s, respectively, at a
latitude of 65°. We find that the sky-projected angle between the
stellar spin axis and the planetary orbital axis is λ
=1.0±1.2°, indicating axial alignment. Our results are
consistent with and more precise than published spectroscopic
measurements of the Rossiter-McLaughlin effect.
Description:
Defocussed photometry for the transiting extrasolar planetary system
WASP-19. The data were obtained in the Gunn r passband using the EFOSC
CCD imager on the 3.6m New Technology Telescope at ESO La Silla. The
observer was Claus Tappert.
Objects:
------------------------------------------------------------
RA (2000) DE Designation(s)
------------------------------------------------------------
09 53 40.08 -45 39 33.1 WASP-19 = 2MASS J09534008-4539330
------------------------------------------------------------
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
wasp19.dat 37 218 Photometry of WASP-19
--------------------------------------------------------------------------------
See alos:
J/MNRAS/396/1023 : Transiting planetary system WASP-5 (Southworth+, 2009)
J/MNRAS/399/287 : Transiting planetary system WASP-4 (Southworth+, 2009)
J/ApJ/707/167 : Transiting planetary system WASP-18 (Southworth+, 2009)
J/MNRAS/408/1680 : Transiting planetary system WASP-2 (Southworth+, 2010)
J/A+A/527/A8 : Transiting planetary system WASP-7 (Southworth+, 2011)
J/MNRAS/420/2580 : Four transits of HAT-P-13 (Southworth+, 2012)
J/MNRAS/422/3099 : Transits of HAT-P-5 (Southworth+, 2012)
J/MNRAS/426/1338 : Transiting planetary system WASP-17 (Southworth+, 2012)
J/MNRAS/431/966 : Transiting planet WASP-50b (Tregloan-Reed+, 2013)
J/MNRAS/434/1300 : Planetary systems WASP-15, WASP-16 (Southworth+, 2013)
J/MNRAS/444/776 : WASP-24, WASP-25 and WASP-26 (Southworth+, 2014)
J/MNRAS/447/711 : Transiting planetary system WASP-103 (Southworth+, 2015)
J/MNRAS/450/1760 : Transiting planet WASP-6b (Tregloan-Reed+, 2015)
J/MNRAS/454/3094 : Transiting planetary system WASP-57 (Southworth+, 2016)
J/MNRAS/457/4205 : WASP-22, WASP-41, WASP-42 and WASP-55 (Southworth+, 2016)
J/AJ/153/191 : Transiting planetary system GJ 1132 (Southworth+, 2017)
Byte-by-byte Description of file: wasp19.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 13 F13.7 d HJD Heliocentric JD for the midpoint of
observation (UTC) (HJD-2400000)
16- 25 F10.7 mag dmag Differential magnitude in the Gunn r filter
29- 37 F9.7 mag e_dmag Measurement error of the differential magnitude
--------------------------------------------------------------------------------
History:
Copied at http://www.astro.keele.ac.uk/~jkt/data-teps
References:
Southworth et al., Paper I 2009MNRAS.396.1023S 2009MNRAS.396.1023S, Cat. J/MNRAS/396/1023
Southworth et al., Paper II 2009MNRAS.399..287S 2009MNRAS.399..287S, Cat. J/MNRAS/399/287
Southworth et al., Paper III 2010MNRAS.408.1680S 2010MNRAS.408.1680S, Cat. J/MNRAS/408/1680
Southworth et al., Paper IV 2012MNRAS.426.1338S 2012MNRAS.426.1338S, Cat. J/MNRAS/426/1338
Southworth et al., Paper V 2013MNRAS.434.1300S 2013MNRAS.434.1300S, Cat. J/MNRAS/434/1300
Southworth et al., Paper VI 2014MNRAS.444..776S 2014MNRAS.444..776S, Cat. J/MNRAS/444/776
Southworth et al., Paper VII 2015MNRAS.447..711S 2015MNRAS.447..711S, Cat. J/MNRAS/447/711
(End) Patricia Vannier [CDS] 24-May-2018