St Andrews Research Repository

St Andrews University Home
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
  • Register / Login
JavaScript is disabled for your browser. Some features of this site may not work without it.

WASP-20b and WASP-28b : a hot Saturn and a hot Jupiter in near-aligned orbits around solar-type stars

Thumbnail
View/Open
Cameron_2015_A_A_Wasp.pdf (599.7Kb)
Date
03/2015
Author
Anderson, D.R.
Collier Cameron, A.
Hellier, C.
Lendl, M.
Lister, T.A.
Maxted, P.F.L.
Queloz, D.
Smalley, B.
Smith, A.M.S.
Triaud, A.H.M.J.
Brown, D.J.A.
Gillon, M.
Neveu-Vanmalle, M.
Pepe, F.
Pollacco, D.
Ségransan, D.
Udry, S.
West, R.G.
Wheatley, P.J.
Funder
Science & Technology Facilities Council
Science & Technology Facilities Council
PPARC - Now STFC
Science & Technology Facilities Council
Science & Technology Facilities Council
Science & Technology Facilities Council
Grant ID
ST/J001651/1
ST/I000666/1
PP/D000890/1
ST/M001296/1
ST/G001006/1
PP/F000065/1
Keywords
Planetary systems
Stars: individual: WASP-20b
Stars: individual: WASP-28b
QB Astronomy
QC Physics
DAS
Metadata
Show full item record
Abstract
We report the discovery of the planets WASP-20b and WASP-28b along with measurements of their sky-projected orbital obliquities. WASP-20b is an inflated, Saturn-mass planet (0.31M; 1.46R) in a 4.9-day, near-aligned (λ = 12.7 ± 4.2) orbit around CD-24 102 (V = 10.7; F9). Due to the low density of the planet and the apparent brightness of the host star, WASP-20 is a good target for atmospheric characterisation via transmission spectroscopy. WASP-28b is an inflated, Jupiter-mass planet (0.91M; 1.21R) in a 3.4-day, near-aligned (λ = 8 ± 18) orbit around a V = 12, F8 star. As intermediate-mass planets in short orbits around aged, cool stars (7 Gyr and 6000 ± 100 K for WASP-20; 5 Gyr and 6100 ± 150 K for WASP-28), their orbital alignment is consistent with the hypothesis that close-in giant planets are scattered into eccentric orbits with random alignments, which are then circularised and aligned with their stars' spins via tidal dissipation.
Citation
Anderson , D R , Collier Cameron , A , Hellier , C , Lendl , M , Lister , T A , Maxted , P F L , Queloz , D , Smalley , B , Smith , A M S , Triaud , A H M J , Brown , D J A , Gillon , M , Neveu-Vanmalle , M , Pepe , F , Pollacco , D , Ségransan , D , Udry , S , West , R G & Wheatley , P J 2015 , ' WASP-20b and WASP-28b : a hot Saturn and a hot Jupiter in near-aligned orbits around solar-type stars ' , Astronomy & Astrophysics , vol. 575 , A64 . https://doi.org/10.1051/0004-6361/201423591
Publication
Astronomy & Astrophysics
Status
Peer reviewed
DOI
https://doi.org/10.1051/0004-6361/201423591
ISSN
0004-6361
Type
Journal article
Rights
Reproduced with permission from Astronomy & Astrophysics, © ESO 2015.
Description
Funding for WASP comes from consortium universities and from the UK’s Science and Technology Facilities Council. M. Gillon is a FNRS Research Associate. A. H. M. J. Triaud is a Swiss National Science Foundation fellow under grant number PBGEP2-145594.
Collections
  • University of St Andrews Research
URI
http://hdl.handle.net/10023/6198

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

Related items

Showing items related by title, author, creator and subject.

  • A prospective new diagnostic technique for distinguishing eruptive and noneruptive active regions 

    Pagano, Paolo; Mackay, Duncan H.; Yardley, Stephanie L. (2019-09-26) - Journal article
    Active regions are the source of the majority of magnetic flux rope ejections that become coronal mass ejections (CMEs). To identify in advance which active regions will produce an ejection is key for both space weather ...
  • From dense hot Jupiter to low-density Neptune : the discovery of WASP-127b, WASP-136b, and WASP-138b 

    Lam, K. W. F.; Faedi, F.; Brown, D. J. A.; Anderson, D. R.; Delrez, L.; Gillon, M.; Hébrard, G.; Lendl, M.; Mancini, L.; Southworth, J.; Smalley, B.; Triaud, A. H. M.; Turner, O. D.; Hay, K. L.; Armstrong, D. J.; Barros, S. C. C.; Bonomo, A. S.; Bouchy, F.; Boumis, P.; Collier Cameron, A.; Doyle, A. P.; Hellier, C.; Henning, T.; Jehin, E.; King, G.; Kirk, J.; Louden, T.; Maxted, P. F. L.; McCormac, J. J.; Osborn, H. P.; Palle, E.; Pepe, F.; Pollacco, D.; Prieto-Arranz, J.; Queloz, D.; Rey, J.; Ségransan, D.; Udry, S.; Walker, S.; West, R. G.; Wheatley, P. J. (2017-03-01) - Journal article
    We report three newly discovered exoplanets from the SuperWASP survey. WASP-127b is a heavily inflated super-Neptune of mass 0.18 ± 0.02 MJ and radius 1.37 ± 0.04 RJ. This is one of the least massive planets discovered by ...
  • Uncovering the true periods of the young sub-Neptunes orbiting TOI-2076 

    Osborn, H. P.; Bonfanti, A.; Gandolfi, D.; Hedges, C.; Leleu, A.; Fortier, A.; Futyan, D.; Gutermann, P.; Maxted, P. F.L.; Borsato, L.; Collins, K. A.; Da Silva, J. Gomes; Chew, Y. Gomez Maqueo; Hooton, M. J.; Lendl, M.; Parviainen, H.; Salmon, S.; Schanche, N.; Serrano, L. M.; Sousa, S. G.; Tuson, A.; Ulmer-Moll, S.; Van Grootel, V.; Wells, R. D.; Wilson, T. G.; Alibert, Y.; Alonso, R.; Anglada, G.; Asquier, J.; Barrado Y Navascues, D.; Baumjohann, W.; Beck, T.; Benz, W.; Biondi, F.; Bonfils, X.; Bouchy, F.; Brandeker, A.; Broeg, C.; Barczy, T.; Barros, S. C.C.; Cabrera, J.; Charnoz, S.; Cameron, A. Collier; Csizmadia, S.; Davies, M. B.; Deleuil, M.; Delrez, L.; Demory, B. O.; Ehrenreich, D.; Erikson, A.; Fossati, L.; Fridlund, M.; Gillon, M.; Gomez-Munoz, M. A.; Gudel, M.; Heng, K.; Hoyer, S.; Isaak, K. G.; Kiss, L.; Laskar, J.; Des Etangs, A. Lecavelier; Lovis, C.; Magrin, D.; Malavolta, L.; McCormac, J.; Nascimbeni, V.; Olofsson, G.; Ottensamer, R.; Pagano, I.; Palle, E.; Peter, G.; Piazza, D.; Piotto, G.; Pollacco, D.; Queloz, D.; Ragazzoni, R.; Rando, N.; Rauer, H.; Reimers, C.; Ribas, I.; Demangeon, O. D.S.; Smith, A. M.S.; Sabin, L.; Santos, N.; Scandariato, G.; Schroffenegger, U.; Schwarz, R. P.; Shporer, A.; Simon, A. E.; Steller, M.; Szabo, G. M.; Segransan, D.; Thomas, N.; Udry, S.; Walter, I.; Walton, N. (2022-08-25) - Journal article
    Context. TOI-2076 is a transiting three-planet system of sub-Neptunes orbiting a bright (G = 8.9 mag), young (340 ±80 Myr) K-type star. Although a validated planetary system, the orbits of the two outer planets were ...
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.

Accessibility

Read our Accessibility statement.

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