J/ApJ/692/L100 Relative photometry of WASP-10 (Johnson+, 2009)
A smaller radius for the transiting exoplanet WASP-10b.
Johnson J.A., Winn J.N., Cabrera N.E., Carter J.A.
<Astrophys. J., 692, L100-L104 (2009)>
=2009ApJ...692L.100J 2009ApJ...692L.100J
ADC_Keywords: Planets ; Photometry ; Stars, double and multiple
Keywords: instrumentation: detectors - planetary systems - stars: individual
(WASP-10) - techniques: photometric
Abstract:
We present the photometry of WASP-10 during a transit of its
short-period Jovian planet. We employed the novel point-spread
function shaping capabilities of the Orthogonal Parallel Transfer
Imaging Camera mounted on the UH 2.2m telescope to achieve a
photometric precision of 4.7x10-4 per 1.3 minute sample. With this
new light curve, in conjunction with stellar evolutionary models, we
improve on existing measurements of the planetary, stellar, and
orbital parameters. We find a stellar radius R*=0.698±0.012R☉
and a planetary radius RP=1.080±0.020RJup. The quoted errors do
not include any possible systematic errors in the stellar evolutionary
models. Our measurement improves the precision of the planet's radius
by a factor of 4, and revises the previous estimate downward by 16%
(2.5σ, where σ is the quadrature sum of the respective
confidence limits). Our measured radius of WASP-10b is consistent with
previously published theoretical radii for irradiated Jovian planets.
Description:
We observed WASP-10 on UT August 16, spanning a transit time predicted
by the ephemeris of Christian et al. (2009MNRAS.392.1585C 2009MNRAS.392.1585C). We used
the Orthogonal Parallel Transfer Imaging Camera (OPTIC) on the
University of Hawaii 2.2m telescope atop Mauna Kea, Hawaii.
Objects:
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RA (2000) DE Designation(s)
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23 15 58.3 +31 27 46 WASP-10 = GSC 02752-00114
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 21 194 Relative photometry for WASP-10 (table from
erratum in 2010ApJ...712L.122J 2010ApJ...712L.122J)
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 13 F13.5 d HJD Heliocentric Julian Date
15- 21 F7.5 --- RFlux Relative Flux
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 25-Feb-2011