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4 papers · 2 filters
Very Low-Mass Stellar and Substellar Companions to Solar-like Stars From MARVELS VI: A Giant Planet and a Brown Dwarf Candidate in a Close Binary System HD 87646
Bo Ma, Jian Ge, Alex Wolszczan +34
We report the detections of a giant planet (MARVELS-7b) and a brown dwarf candidate (MARVELS-7c) around the primary star in the close binary system, HD 87646. It is the first close…
Three Temperate Neptunes Orbiting Nearby Stars
Benjamin J. Fulton, Andrew W. Howard, Lauren M. Weiss +17
We present the discovery of three modestly-irradiated, roughly Neptune-mass planets orbiting three nearby Solar-type stars. HD 42618 b has a minimum mass of M$_{\opl…
Stellar Activity and Exclusion of the Outer Planet in the HD 99492 System
Stephen R. Kane, Badrinath Thirumalachari, Gregory W. Henry +7
A historical problem for indirect exoplanet detection has been contending with the intrinsic variability of the host star. If the variability is periodic, it can easily mimic vario…
HST hot-Jupiter transmission spectral survey: Clear skies for cool Saturn WASP-39b
Patrick D. Fischer, Heather A. Knutson, David K. Sing +13
We present HST STIS optical transmission spectroscopy of the cool Saturn-mass exoplanet WASP-39b from 0.29-1.025 micron, along with complementary transit observations from Spitzer…