Showing 2018 · astro-ph.EPShow all

13 papers · 2 filters

astro-ph.EP2018★ 6 cited

Secondary eclipses of WASP-18b -- Near Infrared observations with the Anglo Australian Telescope, the Magellan Clay Telescope and the LCOGT network

L. Kedziora-Chudczer, G. Zhou, J. Bailey +6

We present new eclipse observations for one of the hottest "hot Jupiters" WASP-18b, for which previously published data from HST WFC3 and Spitzer have led to radically conflicting…

astro-ph.EP2018★ 72 cited

HATS-70b: A 13 Mjup brown dwarf transiting an A star

G. Zhou, G. Á. Bakos, D. Bayliss +23

We report the discovery of HATS-70b, a transiting brown dwarf at the deuterium burning limit. HATS-70b has a mass of Mp=12.9 +1.8/-1.6 Mjup and a radius of Rp=1.384 +0.079/-0.074 R…

astro-ph.EP2018★ 22 cited

The polarization of the planet-hosting WASP-18 system

Kimberly Bott, Jeremy Bailey, Daniel V. Cotton +3

We report observations of the linear polarization of the WASP-18 system, which harbors a very massive ( approx 10 M_J) planet orbiting very close to its star with an orbital period…

astro-ph.EP2018★ 53 cited

A Jovian planet in an eccentric 11.5 day orbit around HD1397 discovered by TESS

L. D. Nielsen, F. Bouchy, O. Turner +36

The Transiting Exoplanet Survey Satellite TESS has begun a new age of exoplanet discoveries around bright host stars. We present the discovery of HD 1397b (TOI-120.01), a giant pla…

astro-ph.EP2018★ 13 cited

A Large Ground-Based Observing Campaign of the Disintegrating Planet K2-22b

Knicole D. Colón, George Zhou, Avi Shporer +27

We present 45 ground-based photometric observations of the K2-22 system collected between December 2016 and May 2017, which we use to investigate the evolution of the transit of th…

astro-ph.EP2018★ 23 cited

Stellar Obliquities & Planetary Alignments (SOPA) I. Spin-Orbit measurements of Three Transiting Hot Jupiters: WASP-72b, WASP-100b, & WASP-109b

B. C. Addison, S. Wang, M. C. Johnson +3

We report measurements of the sky-projected spin--orbit angles for three transiting hot Jupiters: two of which are in nearly polar orbits, WASP-100b and WASP-109b, and a third in a…

astro-ph.EP2018★ 17 cited

Exoplanets in the Antarctic sky. II. 116 Transiting Exoplanet Candidates Found by AST3-II (CHESPA) within the Southern CVZ of TESS

Hui Zhang, Zhouyi Yu, Ensi Liang +37

We report first results from the CHinese Exoplanet Searching Program from Antarctica (CHESPA)---a wide-field high-resolution photometric survey for transiting exoplanets carried ou…

astro-ph.EP2018★ 50 cited

HATS-60b - HATS-69b: Ten Transiting Planets From HATSouth

J. D. Hartman, G. A. Bakos, D. Bayliss +27

We report the discovery of ten transiting extrasolar planets by the HATSouth survey. The planets range in mass from the Super-Neptune HATS-62b, with , to the S…

astro-ph.EP2018★ 32 cited

Polarized Radiative Transfer in Planetary Atmospheres and the Polarization of Exoplanets

Jeremy Bailey, Lucyna Kedziora-Chudczer, Kimberly Bott

We describe the incorporation of polarized radiative transfer into the atmospheric radiative transfer modelling code VSTAR (Versatile Software for Transfer of Atmospheric Radiation…

astro-ph.EP2018★ 36 cited

Predicting radial-velocity jitter induced by stellar oscillations based on Kepler data

Jie Yu, Daniel Huber, Timothy R. Bedding +1

Radial-velocity (RV) jitter due to intrinsic stellar variability introduces challenges when characterizing exoplanet systems, particularly when studying small (sub-Neptune-sized) p…

astro-ph.EP2018★ 7 cited

HATS-59b,c: A Transiting Hot Jupiter and a Cold Massive Giant Planet Around a Sun-Like Star

P. Sarkis, Th. Henning, J. D. Hartman +27

We report the first discovery of a multi-planetary system by the HATSouth network, HATS-59b,c, a planetary system with an inner transiting hot Jupiter and an outer cold massive gia…

astro-ph.EP2018★ 17 cited

HATS-39b, HATS-40b, HATS-41b, and HATS-42b: Three Inflated Hot Jupiters and a Super-Jupiter Transiting F Stars

J. Bento, J. D. Hartman, G. A. Bakos +22

We report the discovery of four transiting hot Jupiters from the HATSouth survey: HATS-39b, HATS-40b, HATS41b and HATS-42b. These discoveries add to the growing number of transitin…

astro-ph.EP2018★ 58 cited

Orbit and Dynamical Mass of the Late-T Dwarf Gl 758 B

Brendan P. Bowler, Trent J. Dupuy, Michael Endl +11

Gl 758 B is a late-T dwarf orbiting a metal-rich Sun-like star at a projected separation of 1.6" (25 AU). We present four epochs of astrometry of this system with NIR…