J/ApJ/728/125 Transits of OGLE-TR-132b (Adams+, 2011)
Transit timing variation analysis of OGLE-TR-132b with seven new transits.
Adams E.R., Lopez-Morales M., Elliot J.L., Seager S., Osip D.J.
<Astrophys. J., 728, 125 (2011)>
=2011ApJ...728..125A 2011ApJ...728..125A
ADC_Keywords: Stars, double and multiple ; Planets ; Photometry
Keywords: planetary systems - stars: individual (OGLE-TR-132)
Abstract:
We report the results of the first transit timing variation analysis
of the very hot Jupiter OGLE-TR-132b, using 10 transits collected over
a seven-year period. Our analysis combines three previously published
transit light curves with seven new transits, which were observed
between 2008 February and 2009 May with the new MagIC-e2V instrument
on the Magellan Telescopes in Chile. We provide a revised planetary
radius of Rp=1.23±0.07RJ, which is slightly larger, but
consistent within the errors, than that given by previously published
results. Analysis of the planet-to-star radius ratio, orbital
separation, inclination, and transit duration reveals no apparent
variation in any of those parameters during the time span observed. We
also find no sign of transit timing variations larger than -108±49s,
with most residuals very close to zero. This allows us to place an
upper limit of 5-10M{earth} for a coplanar, low-eccentricity
perturber in either the 2:1 or 3:2 mean-motion resonance with
OGLE-TR-132b. We similarly find that the data are entirely consistent
with a constant orbital period and there is no evidence for orbital
decay within the limits of precision of our data.
Description:
We observed seven full transits of OGLE-TR-132b between 2008 April and
2009 May, using the dual-CCD instrument MagIC on the Magellan-Baade
6.5m telescope. All transits were observed in the Sloan i' filter
using MagIC-e2v.
Two R-band light curves were reported by Moutou et al. (2004, Cat.
J/A+A/424/L31) and Gillon et al. (2007, cat. J/A+A/466/743), referred
to throughout as 20040517 and 20050420. Although the original OGLE
survey data are much less precise than the other light curves, we
include them in our analysis in order to test whether its parameters
are consistent with the more recent data. The OGLE discovery curve,
denoted 20020219, was observed in the I-band.
Objects:
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RA (2000) DE Designation(s) (Period)
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10 50 34.7 -61 57 26 OGLE-TR-132b = NAME OGLE-TR-132b (P=1.689868)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 49 4940 Flux values for seven transits of OGLE-TR-132b
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See also:
II/278 : Transits observed in OGLE 2001-2003 (Udalski+, 2002-2004)
J/ApJ/716/1336 : Stability analysis of single-planet (Kopparapu+, 2010)
J/ApJ/692/L9 : Tidal evolution of transiting extrasolar planets (Levrard+,
2009)
J/A+A/466/743 : Transiting planet OGLE-TR-132b (Gillon+, 2007)
J/A+A/475/359 : Predicting radio fluxes of extrasolar planets (Griessmeier+,
2007)
J/A+A/458/997 : Abundances for 6 transiting planet host stars (Santos+, 2006)
J/A+A/424/L31 : Transiting exoplanet OGLE-TR-132b (Moutou+, 2004)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 14 F14.6 d JD Mid-exposure Julian Date; UTC
16- 29 F14.6 d BJD Mid-exposure Baryocentric Julian Date; TDB
corrected
31- 39 F9.7 --- Flux Normalized stellar flux
41- 49 F9.7 --- e_Flux The RMS error in NFlux
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 06-Sep-2012