J/MNRAS/431/966 Transiting planet WASP-50b (Tregloan-Reed+, 2013)
An extremely high photometric precision in ground-based observations of
two transits in the WASP-50 planetary system.
Tregloan-Reed J., Southworth J.
<Mon. Not. R. Astron. Soc., 431, 966-971 (2013)>
=2013MNRAS.431..966T 2013MNRAS.431..966T (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Planets ; Photometry
Keywords: techniques: photometric - stars: fundamental parameters -
stars: individual: WASP-50 - planetary systems
Abstract:
We present photometric observations of two transits in the WASP-50
planetary system, obtained using the ESO New Technology Telescope and
the defocused-photometry technique. The rms scatters for the two data
sets are 258 and 211 ppm with a cadence of 170-200s, setting a new
record for ground-based photometric observations of a point source.
The data were modelled and fitted using the prism and gemc codes, and
the physical properties of the system calculated. We find the mass and
radius of the hot star to be 0.861±0.057M☉ and
0.855±0.019R☉, respectively. For the planet we find a mass of
1.437±0.068MJup, a radius of 1.138±0.026RJup and a density of
0.911±0.033ρJup. These values are consistent with but more
precise than those found in the literature. We also obtain a new
orbital ephemeris for the system: T0= BJD/TDB
2455558.61237(20)+1.9550938(13)xE.
Description:
Two high-quality light curves of transits of the extrasolar planetary
system WASP-50 are presented. They were obtained using the 3.6m NTT at
ESO La Silla, Chile, in the Gunn r passband. The errorbars for each
transit have been scaled so the best-fitting model (obtained using the
JKTEBOP code) has a reduced chi-squared value of 1.0.
Objects:
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RA (2000) DE Designation(s)
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02 54 45.14 -10 53 53.0 WASP-50 = 1SWASP J025445.13-105353.0
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
wasp50.dat 35 226 Photometry of WASP-50
(corrected version, 22/03/2021)
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See also:
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/428/3671 : Transiting planet WASP-19b (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: wasp50.dat
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Bytes Format Units Label Explanations
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1- 14 F14.6 d BJD Barycentric JD for the midpoint of
observation (TDB)
16- 25 F10.7 mag dmag Differential magnitude in the Gunn r filter
27- 35 F9.7 mag e_dmag Measurement error of the differential magnitude
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Acknowledgements:
John Southworth, astro.js(at)keele.ac.uk
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
History:
24-May-2018: on-line version
22-Mar-2021: corrected version (from author)
(End) John Southworth [Keele Univ., UK], Patricia Vannier [CDS] 24-May-2018