Research articles

search articles

My Pages

Stat

Members: 3645
Articles: 2'503'724
Articles rated: 2609

23 April 2024

» arxiv » 1112.2165

Article overview

Kepler-21b: A 1.6REarth Planet Transiting the Bright Oscillating F Subgiant Star HD 179070
Steve B. Howell ; Jason F. Rowe ; Stephen T. Bryson ; Samuel N. Quinn ; Geoffrey W. Marcy ; Howard Isaacson ; David R. Ciardi ; William J. Chaplin ; Travis S. Metcalfe ; Mario J. P. F. G. Monteiro ; Thierry Appourchaux ; Sarbani Basu ; Orlagh L. Creevey ; Ronald L. Gilliland ; Pierre-Olivier Quirion ; Denis Stello ; Hans Kjeldsen ; Jorgen Christensen-Dalsgaard ; Yvonne Elsworth ; Rafael A. García ; Gunter Houdek ; Christoffer Karoff ; Joanna Molenda-Żakowicz ; Michael J. Thompson ; Graham A. Verner ; Guillermo Torres ; Francois Fressin ; Justin R. Crepp ; Elisabeth Adams ; Andrea Dupree ; Dimitar D. Sasselov ; Courtney D. Dressing ; William J. Borucki ; David G. Koch ; Jack J. Lissauer ; David W. Latham ; Thomas N. Gautier III ; Mark Everett ; Elliott Horch ; Natalie M. Batalha ; Edward W. Dunham ; Paula Szkody ; David R. Silva ; Ken Mighel ; Jay Holberg ; Jer^ome Ballot ; Timothy R. Bedding ; Hans Bruntt ; Tiago L. Campante ; Rasmus Handberg ; Saskia Hekker ; Daniel Huber ; Savita Mathur ; Benoit Mosser ; Clara Régulo ; Timothy R. White ; Jessie L. Christiansen ; Christopher K. Middour ; Michael R. Haas ; Jennifer R. Hall ; Jon M. Jenkins ; Sean McCaulif ; Michael N. Fanelli ; Craig Kulesa ; Don McCarthy ; Christopher E. Henze ;
Date:	9 Dec 2011
Abstract:	We present Kepler observations of the bright (V=8.3), oscillating star HD 179070. The observations show transit-like events which reveal that the star is orbited every 2.8 days by a small, 1.6 R_Earth object. Seismic studies of HD 179070 using short cadence Kepler observations show that HD 179070 has a frequencypower spectrum consistent with solar-like oscillations that are acoustic p-modes. Asteroseismic analysis provides robust values for the mass and radius of HD 179070, 1.34{pm}0.06 M{circ} and 1.86{pm}0.04 R{circ} respectively, as well as yielding an age of 2.84{pm}0.34 Gyr for this F5 subgiant. Together with ground-based follow-up observations, analysis of the Kepler light curves and image data, and blend scenario models, we conservatively show at the >99.7% confidence level (3{sigma}) that the transit event is caused by a 1.64{pm}0.04 R_Earth exoplanet in a 2.785755{pm}0.000032 day orbit. The exoplanet is only 0.04 AU away from the star and our spectroscopic observations provide an upper limit to its mass of ~10 M_Earth (2-{sigma}). HD 179070 is the brightest exoplanet host star yet discovered by Kepler.
Source:	arXiv, 1112.2165
Services:	Forum \| Review \| PDF \| Favorites

No review found.

Did you like this article?

This article or document is ...
important:
of broad interest:
readable:
new:
correct:
Global appreciation:

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)

ScienXe.org
» my Online CV
» Free

News, job offers and information for researchers and scientists:

home

contact

sitemap