Asset Details
Do you wish to reserve the book?
Planetary parameters, XUV environments and mass-loss rates for nearby gaseous planets with X-ray detected host-stars
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
Planetary parameters, XUV environments and mass-loss rates for nearby gaseous planets with X-ray detected host-stars
Do you wish to request the book?
Planetary parameters, XUV environments and mass-loss rates for nearby gaseous planets with X-ray detected host-stars
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Paper
Planetary parameters, XUV environments and mass-loss rates for nearby gaseous planets with X-ray detected host-stars
2023
Overview
We leverage Gaia DR2 parallactic distances to deliver new or revised estimates of planetary parameters and X-ray irradiation for a distance-limited (\\(\\lesssim 100\\) pc) sample of 27 gaseous planets (from super-Earths to hot Jupiters) with publicly available Chandra and/or XMM observations, for which we carry out a homogeneous data reduction. For 20 planets with X-ray detected host stars we make use of the photoionization hydrodynamics code ATES to derive updated atmospheric mass outflow rates. The newly derived masses/radii are not consistent with the exoplanet.eu values for five systems; HD 149026b and WASP-38, for mass; and Au Mic b, HAT-P-20 and HAT-P-2 for radii. Notably, the lower mass implies a (Saturn-like) density of \\(0.86\\pm 0.09\\) g cm\\(^{-3}\\) for HD 149026 b. This independent estimate is consistent with the lowest values reported in the literature. Separately, we report on the X-ray detection of GJ 9827, HD 219134 and LHS 1140 for the first time. The inferred stellar X-ray luminosity of LHS 1140 (\\(1.34^{+0.19}_{-0.21} \\times 10^{26}\\) erg sec\\(^{-1}\\)) implies that LHS 1140 b is the least irradiated transiting super-Earth known to orbit within the habitable zone of a nearby M-dwarf.
Publisher
Cornell University Library, arXiv.org
Subject
