189 datasets found

The intermediate period gap, discovered by Kepler, is an observed dearth of stellar rotation periods in the temperature-period diagram at ~20days for G-dwarfs and up to ~30days...

We perform transit timing variation (TTV) and transmission spectroscopy analyses of the planet HAT-P-37b, which is a hot Jupiter orbiting a G-type star. Nine new transit light...

We detect Ly{alpha} absorption from the escaping atmosphere of HD63433c, a R=2.67R{Earth}, P=20.5day mini-Neptune orbiting a young (440Myr) solar analog in the Ursa Major Moving...

We report the discovery of TOI-2180b, a 2.8M_J_ giant planet orbiting a slightly evolved G5 host star. This planet transited only once in Cycle 2 of the primary Transiting...

We present mass and radius measurements of K2-79b and K2-222b, two transiting exoplanets orbiting active G-type stars observed with HARPS-N and K2. Their respective 10.99day and...

We present an independent Doppler validation and dynamical orbital analysis of the two-planet system HD107148, which was recently announced in Rosenthal et al. Our detailed...

Kepler1627A is a G8V star previously known to host a 3.8R{Earth} planet on a 7.2day orbit. The star was observed by the Kepler space telescope because it is nearby (d=329pc) and...

Exoplanet systems with multiple transiting planets are natural laboratories for testing planetary astrophysics. One such system is HD191939 (TOI1339), a bright (V=9) and...

We present the discovery of Kepler-129d (P_d_=7.2_-0.3_^+0.4^yr, m_sini_d__=8.3_-0.7_^+1.1^M_Jup_, e_d_=0.15_-0.05_^+0.07^) based on six years of radial-velocity observations...

We present the discovery of two nearly identically sized sub-Neptune transiting planets orbiting HD63935, a bright (V=8.6mag), Sun-like (Teff=5560K) star at 49pc. TESS...

Alpha Centauri A is the closest solar-type star to the Sun and offers the best opportunity to find and ultimately to characterize an Earth-sized planet located in its habitable...

We report the discovery of two short-period Saturn-mass planets, one transiting the G subgiant TOI-954 (TIC44792534, V=10.343, T=9.78) observed in TESS sectors 4 and 5 and one...

Excalibur is a nonparametric, hierarchical framework for precision wavelength calibration of spectrographs. It is designed with the needs of extreme-precision radial-velocity...

It has been known for a decade that hot stars with hot Jupiters tend to have high obliquities. Less is known about the degree of spin-orbit alignment for hot stars with other...

We conducted a search for technosignatures in 2018 and 2019 April with the L-band receiver (1.15-1.73GHz) of the 100m diameter Green Bank Telescope. These observations focused...

By controlling instrumental errors to below 10cm/s, the EXtreme PREcision Spectrograph (EXPRES) allows for a more insightful study of photospheric velocities that can mask weak...

We measured the Rossiter-McLaughlin effect of WASP-107b during a single transit with Keck/HIRES. We found the sky-projected inclination of WASP-107b's orbit, relative to its...

We present the discovery of a white dwarf companion to the G1 V star 12Psc found as part of a Keck adaptive optics imaging survey of long-term accelerating stars from the...

The Transiting Exoplanet Survey Satellite (TESS) mission was designed to find transiting planets around bright, nearby stars. Here, we present the detection and mass measurement...

Uncovering the occurrence rate of terrestrial planets within the habitable zone (HZ) of their host stars has been a particular focus of exoplanetary science in recent years. The...