Physical properties and transmission spectrum of the WASP-74 planetary system from multiband photometry
Physical properties and transmission spectrum of the WASP-74 planetary system from multiband photometry
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来自多波段光度测量的 WASP-74 行星系统的物理特性和透射光谱
DOI：
10.1093/mnras/stz661
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发表时间：
2019-03
期刊：
影响因子：
--
通讯作者：
Hinse T. C.
中科院分区：
文献类型：
--
作者：
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 Th;Hinse T. C.
We present broad-band photometry of eleven planetary transits of the hot Jupiter WASP-74b, using three medium-class telescopes and employing the telescope-defocussing 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.
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6.5
作者：
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DOI：
10.1088/0004-6256/150/1/18
发表时间：
2014-10
期刊：
The Astronomical Journal
影响因子：
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影响因子：
6.5
作者：
J. Southworth;H. Bruntt;D. Buzasi
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DOI：
10.1051/0004-6361/201323265
发表时间：
2013-12
影响因子：
4.8
作者：
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通讯作者：
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