J/A+A/595/A61 Detection of the secondary eclipse of Qatar-1b (Cruz+, 2016)
Detection of the secondary eclipse of Qatar-1b in the Ks band.
Cruz P., Barrado D., Lillo-Box J., Diaz M., Birkby J., Lopez-Morales M.,
Fortney J.J.
<Astron. Astrophys. 595, A61 (2016)>
=2016A&A...595A..61C 2016A&A...595A..61C (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Planets ; Photometry ; Occultations
Keywords: planetary systems - stars: individual: Qatar-1b -
technique: photometric
Abstract:
Qatar-1b is a close-orbiting hot Jupiter (Rp~=1.18RJ, Mp~=1.33MJ)
around a metal-rich K-dwarf, with orbital separation and period of
0.023AU and 1.42-days. We have observed the secondary eclipse of this
exoplanet in the Ks band with the objective of deriving a brightness
temperature for the planet and providing further constraints to the
orbital configuration of the system.
We obtained near-infrared photometric data from the ground by using
the OMEGA2000 instrument at the 3.5m telescope at Calar Alto (Spain)
in staring mode, with the telescope defocused. We have used principal
component analysis (PCA) to identify correlated systematic trends in
the data. A Markov chain Monte Carlo analysis was performed to model
the correlated systematics and fit for the secondary eclipse of
Qatar-1b using a previously developed occultation model. We adopted
the prayer bead method to assess the effect of red noise on the
derived parameters.
Description:
Detrended light curve with the secondary eclipse of Qatar-1b in the Ks
band, as a function of the orbital phase, and the residuals after the
removal of the best-fitting model.
Objects:
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RA (2000) DE Designation(s)
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20 13 31.62 +65 09 43.5 Qatar-1 = Qatar 1
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
fig3_lc.dat 38 2850 Detrended light curve with the secondary eclipse
of Qatar-1b in the Ks band as a function of the
orbital phase
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See also:
J/A+A/554/A28 : Qatar-1 differential light curve (Covino+, 2013)
J/A+A/555/A92 : Transit timing variations on Qatar-1 (von Essen+, 2013)
J/A+A/577/A109 : Transit times of Qatar-1b (Maciejewski+, 2015)
Byte-by-byte Description of file: fig3_lc.dat
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Bytes Format Units Label Explanations
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1- 10 F10.8 --- Phase Phase
14- 23 F10.8 --- Flux Differential normalized flux
27- 38 F12.9 --- O-C Residuals
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Acknowledgements:
Patricia Cruz, pcruz.astro(at)gmail.com
(End) Patricia Cruz [IAG/USP], Patricia Vannier [CDS] 04-Sep-2016