| | |
| | |
Stat |
Members: 3645 Articles: 2'503'724 Articles rated: 2609
23 April 2024 |
|
| | | |
|
Article overview
| |
|
Fundamental Properties of Kepler Planet-Candidate Host Stars using Asteroseismology | Daniel Huber
; William J. Chaplin
; Jørgen Christensen-Dalsgaard
; Ronald L. Gilliland
; Hans Kjeldsen
; Lars A. Buchhave
; Debra A. Fischer
; Jack J. Lissauer
; Jason F. Rowe
; Roberto Sanchis-Ojeda
; Sarbani Basu
; Rasmus Handberg
; Saskia Hekker
; Andrew W. Howard
; Howard Isaacson
; Christoffer Karoff
; David W. Latham
; Mikkel N. Lund
; Mia Lundkvist
; Geoffrey W. Marcy
; Andrea Miglio
; Victor Silva Aguirre
; Dennis Stello
; Torben Arentoft
; Thomas Barclay
; Timothy R. Bedding
; Christopher J. Burke
; Jessie L. Christiansen
; Yvonne P. Elsworth
; Michael R. Haas
; Steven D. Kawaler
; Travis S. Metcalfe
; Fergal Mullally
; Susan E. Thompson
; | Date: |
11 Feb 2013 | Abstract: | We have used asteroseismology to determine fundamental properties for 66
Kepler planet-candidate host stars, with typical uncertainties of 3% and 7% in
radius and mass, respectively. The results include new asteroseismic solutions
for four host stars with confirmed planets (Kepler-4, Kepler-14, Kepler-23 and
Kepler-25) and increase the total number of Kepler host stars with
asteroseismic solutions to 77. A comparison with stellar properties in the
planet-candidate catalog by Batalha et al. shows that radii for subgiants and
giants obtained from spectroscopic follow-up are systematically too low by up
to a factor of 1.5, while the properties for unevolved stars are in good
agreement. We furthermore apply asteroseismology to confirm that a large
majority of cool main-sequence hosts are indeed dwarfs and not misclassified
giants. Using the revised stellar properties, we recalculate the radii for 107
planet candidates in our sample, and comment on candidates for which the radii
change from a previously giant-planet/brown-dwarf/stellar regime to a
sub-Jupiter size, or vice versa. A comparison of stellar densities from
asteroseismology with densities derived from transit models in Batalha et al.
assuming circular orbits shows significant disagreement for more than half of
the sample due to systematics in the modeled impact parameters, or due to
planet candidates which may be in eccentric orbits. Finally, we investigate
tentative correlations between host-star masses and planet candidate radii,
orbital periods, and multiplicity, but caution that these results may be
influenced by the small sample size and detection biases. | Source: | arXiv, 1302.2624 | Services: | Forum | Review | PDF | Favorites |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
| News, job offers and information for researchers and scientists:
| |