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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 04636naa a2200433 4500 | |
| 001 | oai:lup.lub.lu.se:26d633ef-0c7c-4d15-8bec-30b8172761a3 | |
| 003 | SwePub | |
| 008 | 230818s2023 | |||||||||||000 ||eng| | |
| 024 | 7 | a https://lup.lub.lu.se/record/26d633ef-0c7c-4d15-8bec-30b8172761a32 URI |
| 024 | 7 | a https://doi.org/10.1093/mnras/stac33872 DOI |
| 040 | a (SwePub)lu | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a art2 swepub-publicationtype |
| 072 | 7 | a ref2 swepub-contenttype |
| 100 | 1 | a Li, Daohaiu Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science4 aut0 (Swepub:lu)da4075li |
| 245 | 1 0 | a Making hot Jupiters in stellar clusters: The importance of binary exchange |
| 264 | c 2022-11-23 | |
| 264 | 1 | b Oxford University Press (OUP),c 2023 |
| 300 | a 13 s. | |
| 520 | a It has been suggested that the occurrence rate of hot Jupiters (HJs) in open clusters might reach several per cent, significantly higher than that of the field (~a per cent). In a stellar cluster, when a planetary system scatters with a stellar binary, it may acquire a companion star, which may excite large-amplitude von Zeipel-Lidov-Kozai oscillations in the planet's orbital eccentricity, triggering high-eccentricity migration, and the formation of an HJ. We quantify the efficiency of this mechanism by modelling the evolution of a gas giant around a solar mass star under the influence of successive scatterings with binary and single stars. We show that the chance that a planet ∈ (1, 10) au becomes an HJ in a Gyr in a cluster of stellar density n* = 50 pc-3, and binary fraction fbin = 0.5 is about 2 per cent and an additional 4 per cent are forced by the companion star into collision with or tidal disruption by the central host. An empirical fit shows that the total percentage of those outcomes asymptotically reaches an upper limit determined solely by fbin (e.g. 10 per cent at fbin = 0.3 and 18 per cent at fbin = 1) on a time-scale inversely proportional to n* (~Gyr for n* ~ 100 pc-3). The ratio of collisions to tidal disruptions is roughly a few, and depends on the tidal model. Therefore, if the giant planet occurrence rate is 10 per cent, our mechanism implies an HJ occurrence rate of a few times 0.1 per cent in a Gyr and can thus explain a substantial fraction of the observed rate. | |
| 650 | 7 | a NATURVETENSKAPx Fysikx Astronomi, astrofysik och kosmologi0 (SwePub)103052 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Physical Sciencesx Astronomy, Astrophysics and Cosmology0 (SwePub)103052 hsv//eng |
| 653 | a planets and satellites: dynamical evolution and stability | |
| 653 | a planets and satellites: formation | |
| 653 | a binaries: general | |
| 653 | a open clusters and associations: general | |
| 653 | a Astrophysics - Earth and Planetary Astrophysics | |
| 653 | a Astrophysics - Astrophysics of Galaxies | |
| 653 | a Astrophysics - Solar and Stellar Astrophysics | |
| 700 | 1 | a Mustill, Alexander J.u Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Astrofysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science,Astrophysics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH4 aut0 (Swepub:lu)astr-amu |
| 700 | 1 | a Davies, Melvyn B.u Lund University,Lunds universitet,Matematik (naturvetenskapliga fakulteten),Matematikcentrum,Institutioner vid LTH,Lunds Tekniska Högskola,Mathematics (Faculty of Sciences),Centre for Mathematical Sciences,Departments at LTH,Faculty of Engineering, LTH4 aut0 (Swepub:lu)astr-mda |
| 700 | 1 | a Gong, Yan-Xiang4 aut |
| 710 | 2 | a Astronomi - Genomgår omorganisationb Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation4 org |
| 773 | 0 | t Monthly Notices of the Royal Astronomical Societyd : Oxford University Press (OUP)g 518:3, s. 4265-4277q 518:3<4265-4277x 1365-2966x 0035-8711 |
| 856 | 4 | u https://arxiv.org/abs/2211.16015x freey FULLTEXT |
| 856 | 4 | u http://dx.doi.org/10.1093/mnras/stac3387y FULLTEXT |
| 856 | 4 8 | u https://lup.lub.lu.se/record/26d633ef-0c7c-4d15-8bec-30b8172761a3 |
| 856 | 4 8 | u https://doi.org/10.1093/mnras/stac3387 |
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