The Library
X‐ray irradiation of three planets around Hyades star K2 ‐136
Tools
Fernandez Fernandez, Jorge and Wheatley, Peter J. (2022) X‐ray irradiation of three planets around Hyades star K2 ‐136. Astronomische Nachrichten, 343 (3). e210076. doi:10.1002/asna.20210076 ISSN 0004-6337.
|
PDF
WRAP-X‐ray-irradiation-three-planets-around-Hyades-star-K2‐136-Fernandez-Fernandez-2021.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (1490Kb) | Preview |
Official URL: https://doi.org/10.1002/asna.20210076
Abstract
We study the X‐ray irradiation and likely photoevaporation of the three planets around the star K2‐136. These are the Earth‐sized K2‐136 b, the mini‐Neptune K2‐136 c, and the super‐Earth K2‐136 d. XMM‐Newton observations of the star indicate an X‐ray luminosity of ( 1.18 ± 0.1 ) × 10 28 erg s − 1 in the range 0.15–2.4 keV, resulting in an activity of L X / L bol = ( 1.80 ± 0.68 ) × 10 − 5 . The evaporation past of the planets were modeled using the XUV stellar tracks by Johnstone, Bartel, & Güdel (2020), the energy‐limited mass loss formulation (Erkaev et al., 2007; Lecavelier Des Etangs, 2007), and the thermal evolution formulation by Lopez & Fortney (2014). Our results suggest that planets b and d are most probably purely rocky and have been stripped of their envelopes. On the other hand, planet c likely still has an envelope consisting of 0.8% of the total mass, with its core being relatively large (2.3 R E ).
Item Type: | Journal Article | ||||||||
---|---|---|---|---|---|---|---|---|---|
Subjects: | Q Science > QB Astronomy | ||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||
SWORD Depositor: | Library Publications Router | ||||||||
Library of Congress Subject Headings (LCSH): | X-ray astronomy, Irradiation, Planetary systems , Stars -- Clusters | ||||||||
Journal or Publication Title: | Astronomische Nachrichten | ||||||||
Publisher: | Wiley - V C H Verlag GmbH & Co. KGaA | ||||||||
ISSN: | 0004-6337 | ||||||||
Official Date: | May 2022 | ||||||||
Dates: |
|
||||||||
Volume: | 343 | ||||||||
Number: | 3 | ||||||||
Article Number: | e210076 | ||||||||
DOI: | 10.1002/asna.20210076 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||
Date of first compliant deposit: | 10 November 2021 | ||||||||
Date of first compliant Open Access: | 11 November 2021 |
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year