2019MNRAS.485.5168M

Query : 2019MNRAS.485.5168M

2019MNRAS.485.5168M - Mon. Not. R. Astron. Soc., 485, 5168-5179 (2019/June-1)

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. and WERTZ O.

Abstract (from CDS):

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.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): techniques: photometric - stars: fundamental parameters - stars: individual: WASP-74 - planetary systems

VizieR on-line data: <Available at CDS (J/MNRAS/485/5168): list.dat lc/*>

Simbad objects: 4

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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 CD-30 1812b Pl 04 25 29.0166589296 -30 36 01.610731368           ~ 104 1
2 HD 33643b Pl 05 13 10.9289282640 +33 19 05.400733872           ~ 85 0
3 BD-01 3943 PM* 20 18 09.3209454504 -01 04 32.609372016   10.39 9.75     F9 45 0
4 BD-01 3943b Pl 20 18 09.3209454504 -01 04 32.609372016           ~ 64 0

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