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6 papers · 2 filters
MagAO Imaging of Long-period Objects (MILO). I. A Benchmark M Dwarf Companion Exciting a Massive Planet around the Sun-like Star HD 7449
Timothy J. Rodigas, Pamela Arriagada, Jackie Faherty +17
We present high-contrast Magellan adaptive optics (MagAO) images of HD 7449, a Sun-like star with one planet and a long-term radial velocity (RV) trend. We unambiguously detect the…
HATS-15 b and HATS-16 b: Two massive planets transiting old G dwarf stars
S. Ciceri, L. Mancini, T. Henning +28
We report the discovery of HATS-15 b and HATS-16 b, two massive transiting extrasolar planets orbiting evolved ( Gyr) main-sequence stars. The planet HATS-15 b, which is h…
Doppler Monitoring of the WASP-47 Multiplanet System
Fei Dai, Joshua N. Winn, Pamela Arriagada +8
We present precise Doppler observations of WASP-47, a transiting planetary system featuring a hot Jupiter with both inner and outer planetary companions. This system has an unusual…
No evidence for activity correlations in the radial velocities of Kapteyn's star
Guillem Anglada-Escudé, Mikko Tuomi, Pamela Arriagada +19
Stellar activity may induce Doppler variability at the level of a few m/s which can then be confused by the Doppler signal of an exoplanet orbiting the star. To first order, linear…
Planets Around Low-Mass Stars (PALMS). V. Age-Dating Low-Mass Companions to Members and Interlopers of Young Moving Groups
Brendan P. Bowler, Evgenya L. Shkolnik, Michael C. Liu +22
We present optical and near-infrared adaptive optics (AO) imaging and spectroscopy of 13 ultracool (>M6) companions to late-type stars (K7-M4.5), most of which have recently been i…
First-light LBT nulling interferometric observations: warm exozodiacal dust resolved within a few AU of eta Corvi
D. Defrère, P. M. Hinz, A. J. Skemer +37
We report on the first nulling interferometric observations with the Large Binocular Telescope Interferometer (LBTI), resolving the N' band (9.81 - 12.41 um) emission around the ne…