The Library
NGTS-11 b / TOI-1847 b : a transiting warm Saturn recovered from a TESS single-transit event
Tools
(2020) NGTS-11 b / TOI-1847 b : a transiting warm Saturn recovered from a TESS single-transit event. Applied Physics Letters, 898 (1). L11. doi:10.3847/2041-8213/ab9eb9 ISSN 0003-6951.
|
PDF
WRAP-NGTS-11b-transiting-warm-Saturn-single-transit-event-Watson-2020.pdf - Accepted Version - Requires a PDF viewer. Download (1055Kb) | Preview |
Official URL: https://doi.org/10.3847/2041-8213/ab9eb9
Abstract
We report the discovery of NGTS-11 b (=TOI-1847 b), a transiting Saturn in a 35.46-day orbit around a mid K-type star (Teff=5050 K). We initially identified the system from a single-transit event in a TESS full-frame image light-curve. Following seventy-nine nights of photometric monitoring with an NGTS telescope, we observed a second full transit of NGTS-11 b approximately one year after the TESS single-transit event. The NGTS transit confirmed the parameters of the transit signal and restricted the orbital period to a set of 13 discrete periods. We combined our transit detections with precise radial velocity measurements to determine the true orbital period and measure the mass of the planet. We find NGTS-11 b has a radius of 0.817+0.028-0.032 RJ, a mass of 0.344+0.092-0.073 MJ, and an equilibrium temperature of just 435+34-32 K, making it one of the coolest known transiting gas giants. NGTS-11 b is the first exoplanet to be discovered after being initially identified as a TESS single-transit event, and its discovery highlights the power of intense photometric monitoring in recovering longer-period transiting exoplanets from single-transit events.
Item Type: | Journal Article | ||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Subjects: | Q Science > QB Astronomy | ||||||||||||||||||||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Extrasolar planets -- Detection | ||||||||||||||||||||||||||||||
Journal or Publication Title: | Applied Physics Letters | ||||||||||||||||||||||||||||||
Publisher: | American Institute of Physics | ||||||||||||||||||||||||||||||
ISSN: | 0003-6951 | ||||||||||||||||||||||||||||||
Official Date: | 20 July 2020 | ||||||||||||||||||||||||||||||
Dates: |
|
||||||||||||||||||||||||||||||
Volume: | 898 | ||||||||||||||||||||||||||||||
Number: | 1 | ||||||||||||||||||||||||||||||
Article Number: | L11 | ||||||||||||||||||||||||||||||
DOI: | 10.3847/2041-8213/ab9eb9 | ||||||||||||||||||||||||||||||
Status: | Peer Reviewed | ||||||||||||||||||||||||||||||
Publication Status: | Published | ||||||||||||||||||||||||||||||
Reuse Statement (publisher, data, author rights): | The following article has been accepted by Applied Physics Letters. After it is published, it will be found at (URL/link to the entry page of the journal). | ||||||||||||||||||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||||||||||||||||||||
Date of first compliant deposit: | 29 June 2020 | ||||||||||||||||||||||||||||||
Date of first compliant Open Access: | 29 June 2020 | ||||||||||||||||||||||||||||||
RIOXX Funder/Project Grant: |
|
||||||||||||||||||||||||||||||
Related URLs: | |||||||||||||||||||||||||||||||
Open Access Version: |
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year