J/AJ/141/179 Transits of TrES-4b, HAT-P-3b and WASP-12b (Chan+, 2011)
The transit light-curve project.
XIV. Confirmation of anomalous radii for the exoplanets TrES-4b, HAT-P-3b, and
WASP-12b.
Chan T., Ingemyr M., Winn J.N., Holman M.J., Sanchis-Ojeda R., Esquerdo G.,
Everett M.
<Astron. J., 141, 179 (2011)>
=2011AJ....141..179C 2011AJ....141..179C
ADC_Keywords: Stars, variable ; Planets ; Photometry
Keywords: planetary systems - stars: individual (TrES-4, HAT-P-3, WASP-12)
Abstract:
We present transit photometry of three exoplanets, TrES-4b, HAT-P-3b,
and WASP-12b, allowing for refined estimates of the systems'
parameters. TrES-4b and WASP-12b were confirmed to be "bloated"
planets, with radii of 1.706±0.056RJup and 1.736±0.092RJup,
respectively. These planets are too large to be explained with
standard models of gas giant planets. In contrast, HAT-P-3b has a
radius of 0.827±0.055RJup, smaller than a pure hydrogen-helium
planet and indicative of a highly metal-enriched composition. Analyses
of the transit timings revealed no significant departures from strict
periodicity. For TrES-4, our relatively recent observations allow for
improvement in the orbital ephemerides, which is useful for planning
future observations.
Description:
Almost all the observations were conducted at the Fred Lawrence
Whipple Observatory located on Mt. Hopkins, AZ, using the 1.2m
telescope and KeplerCam detector. The KeplerCam is a 40962 CCD with a
field of view of 23.1'x23.1'. The pixels were binned 2x2 on the chip
for faster readout. The binned pixels subtend 0.68" on a side.
Observations were made through Sloan i and z filters. One of the
WASP-12 transits was observed with the Nordic Optical Telescope (NOT)
located in the Canary Islands, using the ALFOSC detector.
Objects:
------------------------------------------------------------------------
RA (2000) DE Designation(s) (Period)
------------------------------------------------------------------------
17 53 13.06 +37 12 42.4 TrES-4 = NAME TrES-4b (P=3.5539268)
13 44 22.59 +48 01 43.2 HAT-P-3 = TYC 3466-819-1 (P=2.8997360)
06 30 32.79 +29 40 20.3 WASP-12 = TYC 1891-1178-1 (P=1.0914222)
------------------------------------------------------------------------
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 36 765 Photometry of TrES-4 in i
table3.dat 36 1764 Photometry of HAT-P-3 in i, z
table4.dat 36 1141 Photometry of WASP-12 in V, i
(from erratum in AJ, 144, 90 (2012)
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See also:
J/ApJ/652/1715 : Four transits of the exoplanet XO-1b (Holman+, 2006)
J/AJ/133/11 : Photometry of OGLE-TR 111 (Winn+, 2007)
J/ApJ/657/1098 : Transit of TrES-1 (Winn+, 2007)
J/ApJ/655/1103 : Five transits of the exoplanet OGLE-TR-10b (Holman+, 2007)
J/AJ/133/1828 : Transit light curves of HD 189733 (Winn+, 2007)
J/ApJ/664/1185 : Three transits of the exoplanet TrES-2 (Holman+, 2007)
J/AJ/134/1707 : Six transit of exoplanet HAT-P-1b (Winn+, 2007)
J/AJ/136/267 : Six occultations of the exoplanet TrES-3 (Winn+, 2008)
J/ApJ/683/1076 : Transits of exoplanet XO-3b (Winn+, 2008)
J/ApJ/693/794 : Transit of exoplanet HD 17156b (Winn+, 2009)
J/AJ/137/3826 : Two transits of the giant planet WASP-4b (Winn+, 2009)
J/AJ/137/4911 : Six transits of the exoplanet XO-2b (Fernandez+, 2009)
Byte-by-byte Description of file: table2.dat table3.dat table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1 A1 --- Filt [izV] Filter used in the observation
3- 18 F16.8 d HJD Heliocentric Julian Date (1)
20- 29 F10.8 --- RFlux Relative flux
31- 36 F6.4 --- Air Airmass
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Note (1): The time-stamp represents the UT-based Heliocentric Julian Date
at midexposure.
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History:
From electronic version of the journal
References:
Holman et al., Paper I 2006ApJ...652.1715H 2006ApJ...652.1715H, Cat. J/ApJ/652/1715
Winn et al., Paper II 2007AJ....133...11W 2007AJ....133...11W, Cat. J/AJ/133/11
Winn et al., Paper III 2007ApJ...657.1098W 2007ApJ...657.1098W, Cat. J/ApJ/657/1098
Holman et al., Paper IV 2007ApJ...655.1103H 2007ApJ...655.1103H, Cat. J/ApJ/655/1103
Winn et al., Paper V 2007AJ....133.1828W 2007AJ....133.1828W, Cat. J/AJ/133/1828
Holman et al., Paper VI 2007ApJ...664.1185H 2007ApJ...664.1185H, Cat. J/ApJ/664/1185
Winn et al., Paper VII 2007AJ....134.1707W 2007AJ....134.1707W, Cat. J/AJ/134/1707
Winn et al., Paper VIII 2008AJ....136..267W 2008AJ....136..267W, Cat. J/AJ/136/267
Winn et al., Paper IX 2008ApJ...683.1076W 2008ApJ...683.1076W, Cat. J/ApJ/683/1076
Winn et al., Paper X 2009ApJ...693..794W 2009ApJ...693..794W, Cat. J/ApJ/693/794
Winn et al., Paper XI 2009AJ....137.3826W 2009AJ....137.3826W, Cat. J/AJ/137/3826
Fernandez et al., Paper XII 2009AJ....137.4911F 2009AJ....137.4911F, Cat. J/AJ/137/4911
Carter et al., Paper XIII 2011ApJ...730...82C 2011ApJ...730...82C
(End) Greg Schwarz [AAS] Patricia Vannier [CDS] 13-Sep-2012