FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W4317620512> ?p ?o ?g. }

• W4317620512 endingPage "62" @default.
• W4317620512 startingPage "62" @default.
• W4317620512 abstract "Abstract We use Keck/NIRSPEC to survey a sample of of young (<1 Gyr), short-period mini-Neptunes orbiting nearby K dwarfs to measure their mass loss via the metastable helium line. We detect helium absorption from all four of the targets in our initial sample. The first detection, around TOI 560b, was announced in a previous paper. We now announce three additional detections around TOI 1430.01, 2076b, and 1683.01. All four planets show an average in-transit excess absorption of 0.7%–1.0%. However, the outflows differ in their kinematic properties. Object TOI 1430b exhibits preingress absorption, while TOI 2076b’s outflow is exceptionally optically thick and shows significant postegress absorption. For all four planets, the width of the measured helium absorption signal is consistent with expectations for a photoevaporative outflow (10–30 km s −1 , 5000–10,000 K). Unless broadening mechanisms other than thermal velocity and the bulk outflow velocity are significant, our observations disfavor core-powered mass-loss models, which predict much slower (1–3 km s −1 ) outflows. We utilize both an isothermal Parker wind model and an order-of-magnitude method to estimate the mass-loss timescale and obtain ∼a few hundred megayears for each planet. We conclude that many, if not all, of these planets will lose their hydrogen-rich envelopes and become super-Earths. Our results demonstrate that most mini-Neptunes orbiting Sun-like stars have primordial atmospheres, and that photoevaporation is an efficient mechanism for stripping these atmospheres and transforming these planets into super-Earths." @default.
• W4317620512 created "2023-01-21" @default.
• W4317620512 creator A5016187050 @default.
• W4317620512 creator A5024569856 @default.
• W4317620512 creator A5027949941 @default.
• W4317620512 creator A5033871396 @default.
• W4317620512 creator A5036163493 @default.
• W4317620512 creator A5046626315 @default.
• W4317620512 creator A5054806694 @default.
• W4317620512 creator A5060218416 @default.
• W4317620512 date "2023-01-20" @default.
• W4317620512 modified "2023-10-01" @default.
• W4317620512 title "Detection of Atmospheric Escape from Four Young Mini-Neptunes" @default.
• W4317620512 cites W1623203925 @default.
• W4317620512 cites W1968846983 @default.
• W4317620512 cites W1996590017 @default.
• W4317620512 cites W2011301426 @default.
• W4317620512 cites W2019263264 @default.
• W4317620512 cites W2066135596 @default.
• W4317620512 cites W2066154329 @default.
• W4317620512 cites W2142350809 @default.
• W4317620512 cites W2146292423 @default.
• W4317620512 cites W2217402295 @default.
• W4317620512 cites W2606686133 @default.
• W4317620512 cites W2743656798 @default.
• W4317620512 cites W2767012087 @default.
• W4317620512 cites W2798336535 @default.
• W4317620512 cites W2900224735 @default.
• W4317620512 cites W2931388211 @default.
• W4317620512 cites W2944127006 @default.
• W4317620512 cites W2953463866 @default.
• W4317620512 cites W2963273354 @default.
• W4317620512 cites W3010082691 @default.
• W4317620512 cites W3081104161 @default.
• W4317620512 cites W3094408854 @default.
• W4317620512 cites W3098000512 @default.
• W4317620512 cites W3098257270 @default.
• W4317620512 cites W3098262084 @default.
• W4317620512 cites W3098551460 @default.
• W4317620512 cites W3098695305 @default.
• W4317620512 cites W3098874407 @default.
• W4317620512 cites W3099278318 @default.
• W4317620512 cites W3099439336 @default.
• W4317620512 cites W3100044404 @default.
• W4317620512 cites W3100072070 @default.
• W4317620512 cites W3100143954 @default.
• W4317620512 cites W3100755360 @default.
• W4317620512 cites W3100933337 @default.
• W4317620512 cites W3101121505 @default.
• W4317620512 cites W3101235221 @default.
• W4317620512 cites W3101425394 @default.
• W4317620512 cites W3101863508 @default.
• W4317620512 cites W3102286086 @default.
• W4317620512 cites W3102566418 @default.
• W4317620512 cites W3103145119 @default.
• W4317620512 cites W3103224716 @default.
• W4317620512 cites W3103356985 @default.
• W4317620512 cites W3103467614 @default.
• W4317620512 cites W3103590159 @default.
• W4317620512 cites W3103630866 @default.
• W4317620512 cites W3104148413 @default.
• W4317620512 cites W3104957872 @default.
• W4317620512 cites W3105390848 @default.
• W4317620512 cites W3106402285 @default.
• W4317620512 cites W3126098089 @default.
• W4317620512 cites W3127861131 @default.
• W4317620512 cites W3128159535 @default.
• W4317620512 cites W3169612023 @default.
• W4317620512 cites W3170982932 @default.
• W4317620512 cites W3171156384 @default.
• W4317620512 cites W3174865733 @default.
• W4317620512 cites W3183454563 @default.
• W4317620512 cites W3200566264 @default.
• W4317620512 cites W3208359168 @default.
• W4317620512 cites W4200448392 @default.
• W4317620512 cites W4205292541 @default.
• W4317620512 cites W4210316821 @default.
• W4317620512 cites W4211124703 @default.
• W4317620512 cites W4220670124 @default.
• W4317620512 cites W4220912388 @default.
• W4317620512 cites W4225939830 @default.
• W4317620512 cites W4226360033 @default.
• W4317620512 cites W4281571194 @default.
• W4317620512 cites W4288080261 @default.
• W4317620512 cites W4308503486 @default.
• W4317620512 cites W4308843398 @default.
• W4317620512 cites W4309908762 @default.
• W4317620512 cites W4312186133 @default.
• W4317620512 doi "https://doi.org/10.3847/1538-3881/aca75b" @default.
• W4317620512 hasPublicationYear "2023" @default.
• W4317620512 type Work @default.
• W4317620512 citedByCount "13" @default.
• W4317620512 countsByYear W43176205122023 @default.
• W4317620512 crossrefType "journal-article" @default.
• W4317620512 hasAuthorship W4317620512A5016187050 @default.
• W4317620512 hasAuthorship W4317620512A5024569856 @default.
• W4317620512 hasAuthorship W4317620512A5027949941 @default.
• W4317620512 hasAuthorship W4317620512A5033871396 @default.

• next