The Library
Kuiper belt analogues in nearby M-type planet-host systems
Tools
Kennedy, Grant M., Bryden, G., Ardila, D., Eiroa, C., Lestrade, J.-F., Marshall, P., Matthews, B. C., Moro-Martin, A. and Wyatt, M. C. (2018) Kuiper belt analogues in nearby M-type planet-host systems. Monthly Notices of the Royal Astronomical Society, 476 (4). pp. 4584-4591. doi:10.1093/mnras/sty492 ISSN 0035-8711.
|
PDF
WRAP-Kuiper-belt-analogues-nearby-planet-host-systems-Kennedy-2018.pdf - Published Version - Requires a PDF viewer. Download (3290Kb) | Preview |
|
PDF
WRAP-Kuiper-belt-analogues-nearby-M-type-planet-host-systems-Kennedy-2018.pdf - Accepted Version Embargoed item. Restricted access to Repository staff only - Requires a PDF viewer. Download (2207Kb) |
Official URL: https://doi.org/10.1093/mnras/sty492
Abstract
We present the results of a Herschel survey of 21 late-type stars that host planets discovered by the radial velocity technique. The aims were to discover new discs in these systems and to search for any correlation between planet presence and disc properties. In addition to the known disc around GJ 581, we report the discovery of two new discs, in the GJ 433 and GJ 649 systems. Our sample therefore yields a disc detection rate of 14 per cent, higher than the detection rate of 1.2 per cent among our control sample of DEBRIS M-type stars with 98 per cent confidence. Further analysis however shows that the disc sensitivity in the control sample is about a factor of two lower in fractional luminosity than for our survey, lowering the significance of any correlation between planet presence and disc brightness below 98 per cent. In terms of their specific architectures, the disc around GJ 433 lies at a radius somewhere between 1 and 30 au. The disc around GJ 649 lies somewhere between 6 and 30 au, but is marginally resolved and appears more consistent with an edge-on inclination. In both cases the discs probably lie well beyond where the known planets reside (0.06–1.1 au), but the lack of radial velocity sensitivity at larger separations allows for unseen Saturn–mass planets to orbit out to ∼5 au, and more massive planets beyond 5 au. The layout of these M-type systems appears similar to Sun-like star + disc systems with low-mass planets.
Item Type: | Journal Article | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Subjects: | Q Science > QB Astronomy | |||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | |||||||||
Library of Congress Subject Headings (LCSH): | Circumstellar matter, Planets -- Origin, Disks (Astrophysics), 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: | 23 February 2018 | |||||||||
Dates: |
|
|||||||||
Volume: | 476 | |||||||||
Number: | 4 | |||||||||
Page Range: | pp. 4584-4591 | |||||||||
DOI: | 10.1093/mnras/sty492 | |||||||||
Status: | Peer Reviewed | |||||||||
Publication Status: | Published | |||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||
Date of first compliant deposit: | 21 February 2018 | |||||||||
Date of first compliant Open Access: | 21 May 2018 | |||||||||
RIOXX Funder/Project Grant: |
|
|||||||||
Related URLs: |
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year