Qatar Exoplanet Survey: Qatar-7b — A Very Hot Jupiter Orbiting a Metal Rich F-Star. (arXiv:1812.05601v1 [astro-ph.EP])

Qatar Exoplanet Survey: Qatar-7b — A Very Hot Jupiter Orbiting a Metal Rich F-Star. (arXiv:1812.05601v1 [astro-ph.EP])
<a href="http://arxiv.org/find/astro-ph/1/au:+Alsubai_K/0/1/0/all/0/1">Khalid Alsubai</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Tsvetanov_Z/0/1/0/all/0/1">Zlatan Tsvetanov</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Latham_D/0/1/0/all/0/1">David W. Latham</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Bieryla_A/0/1/0/all/0/1">Allyson Bieryla</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Pyrzas_S/0/1/0/all/0/1">Stylianos Pyrzas</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Mislis_D/0/1/0/all/0/1">Dimitris Mislis</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Esquerdo_G/0/1/0/all/0/1">Gilbert A. Esquerdo</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Esamdin_A/0/1/0/all/0/1">Ali Esamdin</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Liu_J/0/1/0/all/0/1">Jinzhong Liu</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Ma_L/0/1/0/all/0/1">Lu Ma</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Bretton_M/0/1/0/all/0/1">Marc Bretton</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Palle_E/0/1/0/all/0/1">Enric Palle</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Murgas_F/0/1/0/all/0/1">Felipe Murgas</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Vilchez_N/0/1/0/all/0/1">Nicolas P. E. Vilchez</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Morton_T/0/1/0/all/0/1">Timothy D. Morton</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Parviainien_H/0/1/0/all/0/1">Hannu Parviainien</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Montanes_Rodriguez_P/0/1/0/all/0/1">Pilar Montanes-Rodriguez</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Narita_N/0/1/0/all/0/1">Norio Narita</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Fukui_A/0/1/0/all/0/1">Akihiko Fukui</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kusakabe_N/0/1/0/all/0/1">Nobuhiko Kusakabe</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Tamura_M/0/1/0/all/0/1">Motohide Tamura</a>

We present the discovery of Qatar-7b — a very hot and inflated giant gas
planet orbiting close its parent star. The host star is a relatively massive
main sequence F-star with mass and radius Mstar = 1.41 +/- 0.03 Msun and Rstar
= 1.56 +/- 0.02 Rsun, respectively, at a distance d = 726 +/- 26 pc, and an
estimated age ~1 Gyr. With its orbital period of P = 2.032 days the planet is
located less than 5 stellar radii from its host star and is heated to a high
temperature Teq ~ 2100 K. From a global solution to the available photometric
and radial velocity observations, we calculate the mass and radius of the
planet to be Mpl = 1.88 +/- 0.25 Mjup and Rpl = 1.70 +/- 0.03 Rjup,
respectively. The planet radius and equilibrium temperature put Qatar-7b in the
top 6% of the hottest and largest known exoplanets. With its large radius and
high temperature Qatar-7b is a valuable addition to the short list of targets
that offer the best opportunity for studying their atmospheres through
transmission spectroscopy.

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