TY - JOUR
T1 - Physical properties and transmission spectrum of the WASP-74 planetary system from multiband photometry
AU - Mancini, L.
AU - Southworth, J.
AU - Mollière, P.
AU - Tregloan-Reed, J.
AU - Juvan, I. G.
AU - Chen, G.
AU - Sarkis, P.
AU - Bruni, I.
AU - Ciceri, S.
AU - Andersen, M. I.
AU - Bozza, V.
AU - Bramich, D. M.
AU - Burgdorf, M.
AU - D'Ago, G.
AU - Dominik, M.
AU - Evans, D. F.
AU - Figuera Jaimes, R.
AU - Fossati, L.
AU - Henning, Th
AU - Hinse, T. C.
AU - Hundertmark, M.
AU - Jørgensen, U. G.
AU - Kerins, E.
AU - Korhonen, H.
AU - Küffmeier, M.
AU - Longa, P.
AU - Peixinho, N.
AU - Popovas, A.
AU - Rabus, M.
AU - Rahvar, S.
AU - Skottfelt, J.
AU - Snodgrass, C.
AU - Tronsgaard, R.
AU - Wang, Y.
AU - Wertz, O.
PY - 2019/6
Y1 - 2019/6
N2 - 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.
AB - 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.
KW - Techniques: photometric
KW - Stars: fundamental parameters
KW - Stars: individual: WASP-74
KW - Planetary systems
UR - http://adsabs.harvard.edu/abs/2019MNRAS.485.5168M
U2 - 10.1093/mnras/stz661
DO - 10.1093/mnras/stz661
M3 - Article
SN - 0035-8711
VL - 485
SP - 5168
EP - 5179
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 4
ER -