Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· Full Refereed Journal Article (PDF/Postscript)
· arXiv e-print (arXiv:1004.1809)
· References in the article
· Citations to the Article (18) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (6)
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
Orbital eccentricity of WASP-12 and WASP-14 from new radial velocity monitoring with SOPHIE
Authors:
Husnoo, Nawal; Pont, Frédéric; Hébrard, Guillaume; Simpson, Elaine; Mazeh, Tsevi; Bouchy, François; Moutou, Claire; Arnold, Luc; Boisse, Isabelle; Díaz, Rodrigo F.; Eggenberger, Anne; Shporer, Avi
Affiliation:
AA(School of Physics, University of Exeter, Exeter EX4 4QL), AB(School of Physics, University of Exeter, Exeter EX4 4QL), AC(Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis boulevard Arago, 75014 Paris, France; Observatoire de Haute-Provence, CNRS/OAMP, 04870 Saint-Michel-l'Observatoire, France), AD(Astrophysics Research Centre, School of Mathematics & Physics, Queens University, University Road, Belfast BT7 1NN), AE(School of Physics and Astronomy, Tel Aviv University, Tel Aviv 69978, Israel), AF(Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis boulevard Arago, 75014 Paris, France; Observatoire de Haute-Provence, CNRS/OAMP, 04870 Saint-Michel-l'Observatoire, France), AG(Laboratoire d'Astrophysique de Marseille, Université de Provence, CNRS (UMR 6110), 38 rue Frédéric Joliot Curie, 13388 & Marseille cedex 13, France), AH(Observatoire de Haute-Provence, CNRS/OAMP, 04870 Saint-Michel-l'Observatoire, France), AI(Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis boulevard Arago, 75014 Paris, France), AJ(Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis boulevard Arago, 75014 Paris, France), AK(Laboratoire d'Astrophysique de Grenoble, Université Joseph-Fourier, CNRS (UMR5571), BP53, 38041 Grenoble cedex 9, France), AL(Las Cumbres Observatory Global Telescope Network, 6740 Cortona Drive, suite 102, Goleta, CA 93117, USA)
Publication:
Monthly Notices of the Royal Astronomical Society, Volume 413, Issue 4, pp. 2500-2508. (MNRAS Homepage)
Publication Date:
06/2011
Origin:
WILEY
Astronomy Keywords:
planet-star interactions, planetary systems
Abstract Copyright:
© 2011 The Authors Monthly Notices of the Royal Astronomical Society © 2011 RAS
DOI:
10.1111/j.1365-2966.2011.18322.x
Bibliographic Code:
2011MNRAS.413.2500H

Abstract

As part of the long-term radial velocity monitoring of known transiting planets, we have acquired new radial velocity data for the two transiting systems WASP-12 and WASP-14, each harbouring a gas giant on a close orbit (orbital period of 1.09 and 2.24 d, respectively). In both cases, the initial orbital solution suggested a significant orbital eccentricity, 0.049 ± 0.015 for WASP-12b and 0.091 ± 0.003 for WASP-14b. Since then, measurements of the occultation of WASP-12 in the infrared have indicated that one projection of the eccentricity (e cos ω) was close to zero, casting doubt on the eccentricity from the initial radial velocity orbit. Our measurements show that the radial velocity data are compatible with a circular orbit. A MCMC analysis taking into account the presence of correlated systematic noise in both the radial velocity and photometric data gives e= 0.017+0.015-0.010. In contrast, we confirm the orbital eccentricity of WASP-14b, and refine its value to e= 0.0877 ± 0.0030, a 10σ detection. WASP-14b is thus the closest presently known planet with a confirmed eccentric orbit. Based on observations made at the 1.93-m telescopes at Observatoire de Haute-Provence (CNRS), France with the SOPHIE spectrograph.
Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)
   

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints