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27 papers · 1 filter
Kepler-7b: A Transiting Planet with Unusually Low Density
David W. Latham, William J. Borucki, David G. Koch +18
We report the discovery and confirmation of Kepler-7b, a transiting planet with unusually low density. The mass is less than half that of Jupiter, Mp = 0.43 Mj, but the radius is f…
(47171) 1999 TC36, A Transneptunian Triple
S. D. Benecchi, K. S. Noll, W. M. Grundy +1
We present new analysis of HST images of (47171) 1999 TC36 that confirm it as a triple system. Fits to the point-spread function consistently show that the apparent primary is itse…
The thermal emission of the young and massive planet CoRoT-2b at 4.5 and 8 microns
M. Gillon, A. A. Lanotte, T. Barman +16
We report measurements of the thermal emission of the young and massive planet CoRoT-2b at 4.5 and 8 microns with the Spitzer Infrared Array Camera (IRAC). Our measured occultation…
51 Pegasi - a planet-bearing Maunder minimum candidate
K. Poppenhaeger, J. Robrade, J. H. M. M. Schmitt +1
We observed 51 Peg, the first detected planet-bearing star, in a 55 ks XMM-Newton pointing and in 5 ks pointings each with Chandra HRC-I and ACIS-S. The star has a very low count r…
GALEX Ultraviolet Imaging of Dwarf Galaxies and Star Formation
Deidre A. Hunter, Bruce G. Elmegreen, Bonnie C. Ludka
We present ultraviolet integrated and azimuthally-averaged surface photometric properties of a sample of 44 dIm, BCD, and Sm galaxies measured from archival NUV and FUV images obta…
Physical Properties of Young Brown Dwarfs and Very Low-Mass Stars Inferred from High-Resolution Model Spectra
Emily L. Rice, T. Barman, Ian S. McLean +2
By comparing near-infrared spectra with atmosphere models, we infer the effective temperature, surface gravity, projected rotational velocity, and radial velocity for 21 very-low-m…