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J/A+A/528/A49       HAT-P-1b Ks-band secondary eclipse       (de Mooij +, 2011)

The GROUSE project. II: Detection of the Ks-band secondary eclipse of exoplanet HAT-P-1b. de Mooij E.J.W., de Kok R.J., Nefs S.V., Snellen I.A.G. <Astron. Astrophys. 528, A49 (2011)> =2011A&A...528A..49D
ADC_Keywords: Stars, double and multiple ; Planets ; Photometry, infrared Keywords: techniques: photometric - stars: individual: HAT-P-1 - planets and satellites: individual: HAT-P-1b Abstract: Only recently it has become possible to measure the thermal emission from hot-Jupiters at near-Infrared wavelengths using ground-based telescopes, by secondary eclipse observations. This allows the planet flux to be probed around the peak of its spectral energy distribution, which is vital for the understanding of its energy budget. The aim of the reported work is to measure the eclipse depth of the planet HAT-P-1b at 2.2micron. This planet is an interesting case, since the amount of stellar irradiation it receives falls in between that of the two best studied systems (HD209458 and HD189733), and it has been suggested to have a weak thermal inversion layer. We have used the LIRIS instrument on the William Herschel Telescope (WHT) to observe the secondary eclipse of HAT-P-1b in the Ks-band, as part of our Ground-based secondary eclipse (GROUSE) project. The observations were done in staring mode, while significantly defocusing the telescope to avoid saturation on the K=8.4 star. With an average cadence of 2.5 seconds, we collected 6520 frames during one night. Description: Ks-band time-series photometry of HAT-P-1b and a reference star observed with LIRIS on the WHT. A radius of 14 pixels was used for the aperture photometry. Also included are relevant observables as the sky background per pixel, the airmass, the rotator angle of the instrument, the exposure time, the position of the star on the chip, the Julian date (N.B.: not HJD), and the orbital phase as calculated using parameters from Johnson et al., 2008ApJ...686..649J, (P=4.4652934 and T0=2454363.946560d). Objects: ------------------------------------------------ RA (2000) DE Designation(s) ------------------------------------------------ 22 57 46.8 +38 40 30 HAT-P-1 = BD+37 4734s ------------------------------------------------ File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file hatp1_ks.dat 102 5541 Ks-band time-series photometry of HAT-P-1b
See also: J/AJ/134/1707 : Six transits of exoplanet HAT-P-1b (Winn+, 2007) J/A+A/523/A84 : Transit light curves of HAT-P-13b (Szabo+, 2010) J/A+A/527/A85 : Light curves of HAT-P-3b and HAT-P-14b (Nascimbeni+, 2011) J/A+A/550/A54 : Ks-band observations of WASP-33b (de Mooij+, 2013) Byte-by-byte Description of file: hatp1_ks.dat
Bytes Format Units Label Explanations
1- 14 F14.6 d JD Julian Date of observation 17- 25 F9.7 --- Phase Calculated orbital phase of HAT-P-1b (1) 28- 37 F10.3 --- Fhatp1 Flux of the target (HAT-P-1), in ADU units 40- 50 F11.3 --- Fref Flux of the reference star, in ADU units 53- 60 F8.3 pix-1 Sky Background per pixel, in ADU/pix units 63- 65 F3.1 s TExp Exposure time 68- 74 F7.5 --- Airmass Airmass 77- 84 F8.4 deg mountPA Position angle of the mount 87- 93 F7.3 --- Xpos X-position of HAT-P-1 on the detector 96-102 F7.3 --- Ypos Y-position of HAT-P-1 on the detector
Note (1): Orbital phase calculated using the ephemeris from Johnson et al. (2008ApJ...686..649J)
Acknowledgements: E. de Mooij, demooij(at)strw.leidenuniv.nl References: de Mooij & Snellen, Paper I 2009A&A...493L..35D de Mooij et al., Paper III 2013A&A...550A..54D, Cat. J/A+A/550/A54
(End) E. de Mooij [Leiden Obs., Leiden Univ.], P. Vannier [CDS] 31-Jan-2011
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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