J/A+A/615/A86 WASP-48b Ks-band occultation lightcurves (Clark+, 2018)
Thermal emission of WASP-48b in the Ks-band.
Clark B.J.M., Anderson D.R., Madhusudhan N., Hellier C., Smith A.M.S.,
Collier Cameron A.
<Astron. Astrophys. 615, A86 (2018)>
=2018A&A...615A..86C 2018A&A...615A..86C (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Planets ; Exoplanets
Keywords: methods: data analysis - techniques: photometric -
planets and satellites: individual: WASP-48b -
stars: individual: WASP-48 - planets and satellites: atmospheres
Abstract:
We report a detection of thermal emission from the hot Jupiter
WASP-48b in the Ks-band. We used the Wide-field Infra-red Camera on
the 3.6-m Canada-France Hawaii Telescope to observe an occultation of
the planet by its host star. From the resulting occultation lightcurve
we find a planet-to-star contrast ratio in the Ks-band of
0.136±0.014% , in agreement with the value of 0.109±0.027%
previously determined. We fit the two Ks-band occultation lightcurves
simultaneously with occultation lightcurves in the H-band and the
Spitzer 3.6-um and 4.5-um bandpasses, radial velocity data, and
transit lightcurves. From this, we revise the system parameters and
construct the spectral energy distribution (SED) of the dayside
atmosphere. By comparing the SED with atmospheric models, we find that
both models with and without a thermal inversion are consistent with
the data. We find the planet's orbit to be consistent with circular
(e<0.072 at 3 sigma).
Description:
We observed an occultation of WASP-48b on 2012 Aug 6 through the Ks
(8302) filter with the Wide-field Infrared Camera (WIRCam) on the
3.6-m Canada-France Hawaii Telescope (CFHT).
The table contains the twelve WASP-48b Ks-band occultation lightcurves
shown in figure 3 of the paper. The aperture size and number of
companion stars are noted in the first two columns.
The data are binned in intervals of 10 minutes.
Objects:
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RA (2000) DE Designation(s)
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19 24 38.98 +55 28 23.4 WASP-48b = WASP-48b
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
wasp-48b.dat 65 516 twelve WASP-48b Ks-band occultation lightcurves
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See also:
J/A+A/577/A54 : HAT-P23 and WASP-48 light curves (Ciceri+, 2015)
J/A+A/605/A114 : GTC transit light curves of WASP-48b (Murgas+, 2017)
Byte-by-byte Description of file: wasp-48b.dat
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Bytes Format Units Label Explanations
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1- 3 F3.1 --- NComp Number of companions
9- 13 F5.2 pix Aper Aperture size
17- 30 F14.12 --- Phase Phase
33- 46 F14.12 --- NFlux Normalised flux
49- 65 F17.15 --- e_NFlux Normalised flux error
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Acknowledgements:
Benjamin Clark, b.j.clark(at)keele.ac.uk
(End) Patricia Vannier [CDS] 08-Apr-2018