TOI 564 b and TOI 905 b: Grazing and Fully Transiting Hot Jupiters Discovered by TESS. (arXiv:1912.10186v1 [astro-ph.EP])

TOI 564 b and TOI 905 b: Grazing and Fully Transiting Hot Jupiters Discovered by TESS. (arXiv:1912.10186v1 [astro-ph.EP])
<a href="http://arxiv.org/find/astro-ph/1/au:+Davis_A/0/1/0/all/0/1">Allen B. Davis</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Wang_S/0/1/0/all/0/1">Songhu Wang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Jones_M/0/1/0/all/0/1">Matias Jones</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Eastman_J/0/1/0/all/0/1">Jason D. Eastman</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Gunther_M/0/1/0/all/0/1">Maximilian N. Günther</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Stassun_K/0/1/0/all/0/1">Keivan G. Stassun</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Addison_B/0/1/0/all/0/1">Brett C. Addison</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Collins_K/0/1/0/all/0/1">Karen A. Collins</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Quinn_S/0/1/0/all/0/1">Samuel N. Quinn</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:+Trifonov_T/0/1/0/all/0/1">Trifon Trifonov</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Shahaf_S/0/1/0/all/0/1">Sahar Shahaf</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Mazeh_T/0/1/0/all/0/1">Tsevi Mazeh</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Kane_S/0/1/0/all/0/1">Stephen R. Kane</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Wang_X/0/1/0/all/0/1">Xian-Yu Wang</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Tan_T/0/1/0/all/0/1">Thiam-Guan Tan</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Tokovinin_A/0/1/0/all/0/1">Andrei Tokovinin</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Ziegler_C/0/1/0/all/0/1">Carl Ziegler</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Tronsgaard_R/0/1/0/all/0/1">René Tronsgaard</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Millholland_S/0/1/0/all/0/1">Sarah Millholland</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Cruz_B/0/1/0/all/0/1">Bryndis Cruz</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Berlind_P/0/1/0/all/0/1">Perry Berlind</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Calkins_M/0/1/0/all/0/1">Michael L. Calkins</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:+Collins_K/0/1/0/all/0/1">Kevin I. Collins</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Conti_D/0/1/0/all/0/1">Dennis M. Conti</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Evans_P/0/1/0/all/0/1">Phil Evans</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Lewin_P/0/1/0/all/0/1">Pablo Lewin</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Radford_D/0/1/0/all/0/1">Don J. Radford</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Paredes_L/0/1/0/all/0/1">Leonardo A. Paredes</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Henry_T/0/1/0/all/0/1">Todd J. Henry</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+James_H/0/1/0/all/0/1">Hodari-Sadiki James</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Law_N/0/1/0/all/0/1">Nicholas M. Law</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Mann_A/0/1/0/all/0/1">Andrew W. Mann</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Briceno_C/0/1/0/all/0/1">César Briceño</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Ricker_G/0/1/0/all/0/1">George R. Ricker</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Vanderspek_R/0/1/0/all/0/1">Roland Vanderspek</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Seager_S/0/1/0/all/0/1">Sara Seager</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Winn_J/0/1/0/all/0/1">Joshua N. Winn</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Jenkins_J/0/1/0/all/0/1">Jon M. Jenkins</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Krishnamurthy_A/0/1/0/all/0/1">Akshata Krishnamurthy</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Batalha_N/0/1/0/all/0/1">Natalie M. Batalha</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Burt_J/0/1/0/all/0/1">Jennifer Burt</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Colon_K/0/1/0/all/0/1">Knicole D. Colón</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Dynes_S/0/1/0/all/0/1">Scott Dynes</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Caldwell_D/0/1/0/all/0/1">Douglas A. Caldwell</a>, et al. (3 additional authors not shown)

We report the discovery and confirmation of two new hot Jupiters discovered
by the Transiting Exoplanet Survey Satellite (TESS): TOI 564 b and TOI 905 b.
The transits of these two planets were initially observed by TESS with orbital
periods of 1.651 d and 3.739 d, respectively. We conducted follow-up
observations of each system from the ground, including photometry in multiple
filters, speckle interferometry, and radial velocity measurements. For TOI 564
b, our global fitting revealed a classical hot Jupiter with a mass of
$1.463^{+0.10}_{-0.096} M_J$ and a radius of $1.02^{+0.71}_{-0.29} R_J$. TOI
905 b is a classical hot Jupiter as well, with a mass of
$0.667^{+0.042}_{-0.041} M_J$ and radius of $1.171^{+0.053}_{-0.051} R_J$.
Both planets orbit Sun-like, moderately bright, mid-G dwarf stars with V ~ 11.
While TOI 905 b fully transits its star, we found that TOI 564 b has a very
high transit impact parameter of $0.994^{+0.083}_{-0.049}$, making it one of
only ~20 known systems to exhibit a grazing transit and one of the brightest
host stars among them. TOI 564 b is therefore one of the most attractive
systems to search for additional non-transiting, smaller planets by exploiting
the sensitivity of grazing transits to small changes in inclination and transit
duration over the time scale of several years.

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