J/MNRAS/485/5168 Light curves of WASP-74 (Mancini+, 2019)
Physical properties and transmission spectrum of the WASP-74 planetary
system from multiband photometry.
Mancini L., Southworth J., Molliere P., Tregloan-reed J., Juvan I.G.,
Chen G., Sarkis P., Bruni I., Ciceri S., Andersen M.I., Bozza V.,
Bramich D.M., Burgdorf M., D'ago G., Dominik M., Evans D.F.,
Figuera Jaimes R., Fossati L., Henning T., Hinse T.C., Hundertmark M.,
Jorgensen U.G., Kerins E., Korhonen H., Kuffmeier M., Longa P.,
Peixinho N., Popovas A., Rabus M., Rahvar S., Skottfelt J., Snodgrass C.,
Tronsgaard R., Wang Y., Wertz O.
<Mon. Not. R. Astron. Soc., 485, 5168-5179 (2019)>
=2019MNRAS.485.5168M 2019MNRAS.485.5168M (SIMBAD/NED BibCode)
ADC_Keywords: Stars, double and multiple ; Exoplanets ; Photometry, UBVRI ;
Photometry, SDSS ; Photometry, infrared
Keywords: techniques: photometric - stars: fundamental parameters -
stars: individual: WASP-74 - planetary systems
Abstract:
We present broad-band photometry of 11 planetary transits of the hot
Jupiter WASP-74 b, using three medium-class telescopes and employing
the telescope-defocusing technique. Most of the transits were
monitored through I filters and one was simultaneously observed in
five optical (U, g', r', i', z') and three near-infrared (J, H, K)
passbands, for a total of 18 light curves. We also obtained new
high-resolution spectra of the host star. We used these new data to
review the orbital and physical properties of the WASP-74 planetary
system. We were able to better constrain the main system
characteristics, measuring smaller radius and mass for both the hot
Jupiter and its host star than previously reported in the literature.
Joining our optical data with those taken with the HST in the near
infrared, we built up an observational transmission spectrum of the
planet, which suggests the presence of strong optical absorbers, as
TiO and VO gases, in its atmosphere.
Description:
Light curves of eighteen transit events of the extrasolar planet
WASP-74b. Nine of the datasets were obtained using the Danish 1.54-m
telescope (filter: I and U), two with the CA 1.23-m telescope (filter:
I and B), seven with the MPG 2.2-m telescope (filter: g,r,i,z,J,H,K).
Objects:
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RA (2000) DE Designation(s)
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20 18 09.32 -01 04 32.6 WASP-74 = BD-01 3943
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
list.dat 67 18 List of light curves
lc/* . 18 Individual light curves
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Byte-by-byte Description of file: list.dat
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Bytes Format Units Label Explanations
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1- 14 A14 --- FileName Name of the file in subdirectory lc
16- 25 A10 "date" Obs.date Observation date
27 A1 --- Band [UBIgirzJHK] Observed band
29- 67 A39 --- Title Title of the file
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Byte-by-byte Description of file: lc/*
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Bytes Format Units Label Explanations
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1- 12 F12.6 d BJD Barycentric JD for the midpoint of observation
(BJD-2450000) (TDB)
14- 22 F9.6 mag mag Differential magnitude of the target
24- 33 F10.8 mag e_mag Measurement error of the magnitude
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Acknowledgements:
Luigi Mancini, mancini(at)roma2.infnf.it,
University of Rome "Tor Vergata", Italy
(End) Luigi Mancini [Rome univ., Italy], Patricia Vannier [CDS] 17-Feb-2020