St Andrews Research Repository

View Item 
  •   St Andrews Research Repository
  • University of St Andrews Research
  • University of St Andrews Research
  • University of St Andrews Research
  • View Item
  •   St Andrews Research Repository
  • University of St Andrews Research
  • University of St Andrews Research
  • University of St Andrews Research
  • View Item
  •   St Andrews Research Repository
  • University of St Andrews Research
  • University of St Andrews Research
  • University of St Andrews Research
  • View Item
  • Login
JavaScript is disabled for your browser. Some features of this site may not work without it.

Disentangling planetary orbits from stellar activity in radial-velocity surveys

View/Open
Cameron_2014_IJA_Disentangling.pdf (260.5Kb)
Date
01/04/2014
Author
Haywood, R.D.
Cameron, A.C.
Queloz, D.
Barros, S.C.C.
Deleuil, M.
Fares, R.
Gillon, M.
Hatzes, A.
Lanza, A.F.
Lovis, C.
Moutou, C.
Pepe, F.
Pollacco, D.
Santerne, A.
Ségransan, D.
Unruh, Y.
Keywords
Astronomy
Detection of Earth-mass planets
Stellar activity
Study of individual planetary systems: CoRoT-7
Techniques: radial velocities
QB Astronomy
QC Physics
Metadata
Show full item record
Abstract
The majority of extra-solar planets have been discovered (or confirmed after follow-up) through radial-velocity (RV) surveys. Using ground-based spectrographs such as High Accuracy Radial Velocity Planetary Search (HARPS) and HARPS-North, it is now possible to detect planets that are only a few times the mass of the Earth. However, the presence of dark spots on the stellar surface produces RV signals that are very similar in amplitude to those caused by orbiting low-mass planets. Disentangling these signals has thus become the biggest challenge in the detection of Earth-mass planets using RV surveys. To do so, we use the star's lightcurve to model the RV variations produced by spots. Here we present this method and show the results of its application to CoRoT-7.
Citation
Haywood , R D , Cameron , A C , Queloz , D , Barros , S C C , Deleuil , M , Fares , R , Gillon , M , Hatzes , A , Lanza , A F , Lovis , C , Moutou , C , Pepe , F , Pollacco , D , Santerne , A , Ségransan , D & Unruh , Y 2014 , ' Disentangling planetary orbits from stellar activity in radial-velocity surveys ' International Journal of Astrobiology , vol 13 , no. 2 , pp. 155-157 . DOI: 10.1017/S147355041300044X
Publication
International Journal of Astrobiology
Status
Peer reviewed
DOI
http://dx.doi.org/10.1017/S147355041300044X
ISSN
1473-5504
Type
Journal article
Rights
© Cambridge University Press 2014
Collections
  • University of St Andrews Research
  • Physics & Astronomy Research
URI
http://hdl.handle.net/10023/6416

Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

Advanced Search

Browse

All of RepositoryCommunities & CollectionsBy Issue DateNamesTitlesSubjectsClassificationTypeFunderThis CollectionBy Issue DateNamesTitlesSubjectsClassificationTypeFunder

My Account

Login

Open Access

To find out how you can benefit from open access to research, see our library web pages and Open Access blog. For open access help contact: openaccess@st-andrews.ac.uk.

How to submit research papers

The full text of research papers can be submitted to the repository via PURE, the University's research information system. For help see our guide: How to deposit in Pure.

Electronic thesis deposit

Help with deposit.

Repository help

For repository help contact: Digital-Repository@st-andrews.ac.uk.

Give Feedback

Cookie policy

This site may use cookies. Please see Terms and Conditions.

Usage statistics

COUNTER-compliant statistics on downloads from the repository are available from the IRUS-UK Service. Contact us for information.

© University of St Andrews Library

University of St Andrews is a charity registered in Scotland, No SC013532.

  • Facebook
  • Twitter