J/ApJ/725/2017 Sloan i-band light curve of HAT-P-24 (Kipping+, 2010)
HAT-P-24b: an inflated hot Jupiter on a 3.36 day period transiting a hot,
metal-poor star.
Kipping D.M., Bakos G.A., Hartman J., Torres G., Shporer A., Latham D.W.,
Kovacs G., Noyes R.W., Howard A.W., Fischer D.A., Johnson J.A., Marcy G.W.,
Beky B., Perumpilly G., Esquerdo G.A., Sasselov D.D., Stefanik R.P.,
Lazar J., Papp I., Sari P.
<Astrophys. J., 725, 2017-2028 (2010)>
=2010ApJ...725.2017K 2010ApJ...725.2017K
ADC_Keywords: Photometry ; Planets ; Stars, double and multiple ; Stars, F-type
Keywords: planetary systems - stars: individual (HAT-P-24) -
techniques: photometric - techniques: spectroscopic
Abstract:
We report the discovery of HAT-P-24b, a transiting extrasolar planet
orbiting the moderately bright V=11.818 F8 dwarf star
GSC 0774-01441, with a period P=3.3552464±0.0000071 days, transit
epoch Tc=2455216.97669±0.00024(BJD), and transit duration
3.653±0.025hr. The host star has a mass of 1.191±0.042M☉,
radius of 1.317±0.068R☉, effective temperature 6373±80K, and
a low metallicity of [Fe/H]=-0.16±0.08. The planetary companion has
a mass of 0.681±0.031MJ and radius of 1.243±0.072RJ yielding a
mean density of 0.439±0.069g/cm3. By repeating our global fits
with different parameter sets, we have performed a critical
investigation of the fitting techniques used for previous
Hungarian-made Automated Telescope planetary discoveries. We find that
the system properties are robust against the choice of priors.
Description:
The transits of HAT-P-24b were detected with the HAT-5 and HAT-6
telescopes in Arizona, and with the HAT-8 and HAT-9 telescopes in
Hawaii. The star GSC 0774-01441 lies in the overlap of two fields,
internally labeled as 315 (07:30+15:00) and 314 (07:00+15:00). The
former field was observed on a nightly basis between 2007 October and
2008 May, while the latter field was observed between 2008 November
and 2009 May.
In order to permit a more accurate modeling of the light curve, we
conducted additional photometric observations with the KeplerCam CCD
camera on the FLWO 1.2m telescope in Arizona and with the 2.0m
Faulkes Telescope North (FTN) at Haleakala Observatory in Hawaii. We
observed three transit events of HAT-P-24 with the FLWO 1.2m
telescope on the nights of 2010 January 9, 2010 January 16, and 2010
February 5, and a fourth transit event with the FTN on the night of
2010 February 15.
Objects:
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RA (2000) DE Designation(s) (Period)
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07 15 18.00 +14 15 45.4 HAT-P-24 = GSC 0774-01441 (P=3.355246)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 30 1557 High-precision differential photometry of HAT-P-24
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See also:
II/306 : The SDSS Photometric Catalog, Release 8 (Adelman-McCarthy+, 2011)
J/MNRAS/422/2024 : X-ray-age relation & exoplanet evaporation (Jackson+, 2012)
J/MNRAS/414/108 : Calibrator of exoplanet-host stars (Beust+, 2011)
J/MNRAS/411/L46 : Exoplanet magnetic fields (Vidotto+, 2011)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 11 F11.5 d BJD Barycentric Julian Date (BJD-2400000)
13- 20 F8.5 mag mag Differential magnitude in i-band (1)
22- 28 F7.5 mag e_mag The 1σ uncertainty in mag
30 A1 --- F [i] Filter used (FLWO and FTN/KeplerCam
Sloan i-band)
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Note (1): The out-of-transit level has been subtracted. These magnitudes have
been subjected to the EPD and TFA procedures, carried out
simultaneously with the transit fit.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 10-Aug-2012