Skip to content Skip to navigation
University of Warwick
  • Study
  • |
  • Research
  • |
  • Business
  • |
  • Alumni
  • |
  • News
  • |
  • About

University of Warwick
Publications service & WRAP

Highlight your research

  • WRAP
    • Home
    • Search WRAP
    • Browse by Warwick Author
    • Browse WRAP by Year
    • Browse WRAP by Subject
    • Browse WRAP by Department
    • Browse WRAP by Funder
    • Browse Theses by Department
  • Publications Service
    • Home
    • Search Publications Service
    • Browse by Warwick Author
    • Browse Publications service by Year
    • Browse Publications service by Subject
    • Browse Publications service by Department
    • Browse Publications service by Funder
  • Help & Advice
University of Warwick

The Library

  • Login
  • Admin

Photodynamical mass determination of the multiplanetary system K2-19

Tools
- Tools
+ Tools

Barros, S. C. C., Almenara, J. M., Demangeon, O., Tsantaki, M., Santerne, A., Armstrong, David J., Barrado, D., Brown, D. J. A., Deleuil, M., Lillo-Box, J. et al.
(2015) Photodynamical mass determination of the multiplanetary system K2-19. Monthly Notices of the Royal Astronomical Society, 454 (4). pp. 4267-4276. doi:10.1093/mnras/stv2271

[img]
Preview
PDF
WRAP_4036529-px-080416-mnras-2015-barros-4267-76.pdf - Published Version - Requires a PDF viewer.

Download (2701Kb) | Preview
Official URL: http://dx.doi.org/10.1093/mnras/stv2271

Request Changes to record.

Abstract

K2-19 is the second multiplanetary system discovered with K2 observations. The system is composed of two Neptune size planets close to the 3:2 mean-motion resonance. To better characterize the system we obtained two additional transit observations of K2-19b and five additional radial velocity observations. These were combined with K2 data and fitted simultaneously with the system dynamics (photodynamical model) which increases the precision of the transit time measurements. The higher transit time precision allows us to detect the chopping signal of the dynamic interaction of the planets that in turn permits to uniquely characterize the system. Although the reflex motion of the star was not detected, dynamic modelling of the system allowed us to derive planetary masses of Mb = 44 ± 12  M⊕ and Mc = 15.9 ± 7.0  M⊕ for the inner and the outer planets, respectively, leading to densities close to Uranus. We also show that our method allows the derivation of mass ratios using only the 80 d of observations during the first campaign of K2.

Item Type: Journal Article
Subjects: Q Science > QB Astronomy
Divisions: Faculty of Science > Physics
Library of Congress Subject Headings (LCSH): Satellites, Extrasolar planets -- Detection, Stars -- Motion in line of sight
Journal or Publication Title: Monthly Notices of the Royal Astronomical Society
Publisher: Oxford University Press
ISSN: 0035-8711
Official Date: 21 December 2015
Dates:
DateEvent
21 December 2015Published
28 October 2015Available
29 September 2015Accepted
3 September 2015Submitted
Volume: 454
Number: 4
Number of Pages: 20
Page Range: pp. 4267-4276
DOI: 10.1093/mnras/stv2271
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: Centre national d'études spatiales (France) (CNES), Fundação para a Ciência e a Tecnologia (FCT), European Research Council (ERC), Marie Curie Intra-European Fellowship (IEF)
Grant number: 98761 (CNES), IF/01312/2014 (FCT), UID/FIS/04434/2013 (FCT), 337591 (ERC), 124378 (CNES), 627202 (IEF)
Adapted As:

Request changes or add full text files to a record

Repository staff actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics

twitter

Email us: wrap@warwick.ac.uk
Contact Details
About Us