590 citations · 8.8k across the 153 of their papers we have counts for
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TGAS Error Renormalization from the RR Lyrae Period-Luminosity Relation
Andrew Gould, Juna A. Kollmeier, Branimir Sesar
The Gaia team has applied a renormalization to their internally-derived parallax errors $$ σ_{tgas}(π) = \sqrt{[Aσ_{int}(π)]^2 + σ_0^2}; \ \ \ \ (A,σ_0) = (1.4,0.2…
Predicted Information Content of Gaia-Hipparcos
Andrew Gould, Juna A. Kollmeier
The Gaia-Tycho release, scheduled for 14 September, is forecast to yield parallax errors of as for about 2 million Tycho stars. We show analytically that the actua…
Gaia Parallax Zero Point From RR Lyrae Stars
Andrew Gould, Juna A. Kollmeier
Like Hipparcos, Gaia is designed to give absolute parallaxes, independent of any astrophysical reference system. And indeed, Gaia's internal zero-point error for parallaxes is like…
KELT-12b: A Day, Highly Inflated Hot Jupiter Transiting a Mildly Evolved Hot Star
Daniel J. Stevens, Karen A. Collins, B. Scott Gaudi +46
We report the discovery of KELT-12b, a highly inflated Jupiter-mass planet transiting a mildly evolved host star. We identified the initial transit signal in the KELT-North survey…
KELT-16b: A highly irradiated, ultra-short period hot Jupiter nearing tidal disruption
Thomas E. Oberst, Joseph E. Rodriguez, Knicole D. Colón +47
We announce the discovery of KELT-16b, a highly irradiated, ultra-short period hot Jupiter transiting the relatively bright () star TYC 2688-1839-1. A global analysis of…
KELT-17b: A hot-Jupiter transiting an A-star in a misaligned orbit detected with Doppler tomography
George Zhou, Joseph E. Rodriguez, Karen A. Collins +45
We present the discovery of a hot-Jupiter transiting the V=9.23 mag main-sequence A-star KELT-17 (BD+14 1881). KELT-17b is a 1.31 -0.29/+0.28 Mj, 1.525 -0.060/+0.065 Rj hot-Jupiter…
Microlensing by Kuiper, Oort, and Free-Floating Planets
Andrew Gould
Microlensing is generally thought to probe planetary systems only out to a few Einstein radii. Microlensing events generated by bound planets beyond about 10 Einstein radii general…