Debiased Orbital and Absolute Magnitude Distribution of the Near-Earth Objects
- W. Bottke, A. Morbidelli, T. Metcalfe
- Physics, Geology
- 1 April 2002
The orbital and absolute magnitude distribution of the near-Earth objects (NEOs) is difficult to compute, partly because only a modest fraction of the entire NEO population has been discovered so…
MASSES, RADII, AND ORBITS OF SMALL KEPLER PLANETS: THE TRANSITION FROM GASEOUS TO ROCKY PLANETS
- G. Marcy, H. Isaacson, D. Barrado
- Physics, Geology
- 16 January 2014
We report on the masses, sizes, and orbits of the planets orbiting 22 Kepler stars. There are 49 planet candidates around these stars, including 42 detected through transits and 7 revealed by precise…
Weakened magnetic braking as the origin of anomalously rapid rotation in old field stars
- J. V. Saders, Tugdual Ceillier, G. Davies
- Physics, GeologyNature
- 11 January 2016
Stellar evolutionary modelling is reported, and the presence of unexpectedly rapid rotation in stars that are more evolved than the Sun is confirmed, suggesting a fundamental change in the nature of ageing stellar dynamos.
A REVISED EFFECTIVE TEMPERATURE SCALE FOR THE KEPLER INPUT CATALOG
- M. Pinsonneault, D. An, J. Molenda–Żakowicz, W. Chaplin, T. Metcalfe, H. Bruntt
- Physics
- 20 October 2011
We present a catalog of revised effective temperatures for stars observed in long-cadence mode in the Kepler Input Catalog (KIC). We use Sloan Digital Sky Survey (SDSS) griz filters tied to the…
Kepler-36: A Pair of Planets with Neighboring Orbits and Dissimilar Densities
Another violation of the orbit-composition pattern is reported: two planets orbiting the same star with orbital distances differing by only 10% and densities differing by a factor of 8, likely a rocky “super-Earth,” whereas the other is more akin to Neptune.
The White Dwarf Luminosity Function from Sloan Digital Sky Survey Imaging Data
- H. Harris, J. Munn, D. Schneider
- Physics
- 29 October 2005
A sample of white dwarfs is selected from the Sloan Digital Sky Survey (SDSS) Data Release 3 using their reduced proper motions, based on improved proper motions from combined SDSS and USNO-B data.…
Ages and fundamental properties of Kepler exoplanet host stars from asteroseismology
- V. S. Aguirre, G. Davies, M. Lundkvist
- Geology, Physics
- 29 April 2015
We present a study of 33 {\it Kepler} planet-candidate host stars for which asteroseismic observations have sufficiently high signal-to-noise ratio to allow extraction of individual pulsation…
Kepler Asteroseismology Program: Introduction and First Results
- R. Gilliland, T. Brown, J. Steffen
- Geology, Physics
- 31 December 2009
Asteroseismology involves probing the interiors of stars and quantifying their global properties, such as radius and age, through observations of normal modes of oscillation. The technical…
Accurate fundamental parameters and detailed abundance patterns from spectroscopy of 93 solar-type Kepler targets
- H. Bruntt, S. Basu, D. Sanderfer
- Physics, Geology
- 11 June 2012
We present a detailed spectroscopic study of 93 solar-type stars that are targets of the NASA/Kepler mission and provide detailed chemical composition of each target. We find that the overall…
The Orbital and Absolute Magnitude Distributions of Main Belt Asteroids
- R. Jedicke, T. Metcalfe
- Physics, Geology
- 5 January 1998
We have developed a model-independent analytical method for debiasing the four-dimensional (a,e,i,H) distribution obtained in any asteroid observation program and have applied the technique to…
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