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Speckle Imaging Characterization of Radial Velocity Exoplanet Systems
Paul A. Dalba, Stephen R. Kane, Steve B. Howell +10
We conducted speckle imaging observations of 53 stellar systems that were members of long-term radial velocity (RV) monitoring campaigns and exhibited substantial accelerations ind…
EXPRES. II. Searching for Planets Around Active Stars: A Case Study of HD 101501
Samuel H. C. Cabot, Rachael M. Roettenbacher, Gregory W. Henry +7
By controlling instrumental errors to below 10 cm/s, the EXtreme PREcision Spectrograph (EXPRES) allows for a more insightful study of photospheric velocities that can mask weak Ke…
The Hubble PanCET Program: A Metal-rich Atmosphere for the Inflated Hot Jupiter HAT-P-41b
Kyle B. Sheppard, Luis Welbanks, Avi Mandell +14
We present a comprehensive analysis of the 0.3--5\,m transit spectrum for the inflated hot Jupiter HAT-P-41b. The planet was observed in transit with Hubble STIS and WFC3 as par…
ACCESS: Confirmation of no potassium in the atmosphere of WASP-31b
Chima D. McGruder, Mercedes Lopez-Morales, Nestor Espinoza +12
We present a new optical (400-950nm) transmission spectrum of the hot Jupiter WASP-31b (M=0.48 MJ; R= 1.54 RJ; P=3.41 days), obtained by combining four transits observations. These…
Physical Parameters of the Multi-Planet Systems HD 106315 and GJ 9827
Molly R. Kosiarek, David A. Berardo, Ian J. M. Crossfield +42
HD 106315 and GJ 9827 are two bright, nearby stars that host multiple super-Earths and sub-Neptunes discovered by K2 that are well suited for atmospheric characterization. We refin…
EXPRES I. HD~3651 an Ideal RV Benchmark
John M. Brewer, Debra A. Fischer, Ryan T. Blackman +10
The next generation of exoplanet-hunting spectrographs should deliver up to an order of magnitude improvement in radial velocity precision over the standard 1 m/s state of the art.…