Ali-Dib, Mohamad and Johansen, Anders and Huang, Chelsea X. ORCID: https://orcid.org/0000-0003-0918-7484
(2017)
The origin of the occurrence rate profile of gas giants inside 100 d.
Monthly Notices of the Royal Astronomical Society, 469 (4).
pp. 5016-5022.
ISSN 0035-8711
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Abstract
We investigate the origin of the period distribution of giant planets. We fit the bias-corrected distribution of gas-giant planets inside 300 d found by Santerne et al. using a planet formation model based on pebble accretion. We investigate two possible initial conditions: a linear distribution of planetary seeds, and seeds injected exclusively on the water and CO icelines. Our simulations exclude the linear initial distribution of seeds with a high degree of confidence. Our bimodal model based on snowlines gives a more reasonable fit to the data, with the discrepancies reducing significantly if we assume the water snowline to be a factor of 3-10 less efficient at producing planets. This model moreover performs better on both the warm/hot Jupiters ratio and a Gaussian mixture model as comparison criteria. Our results hint that the gas-giant exoplanets population inside 300 d is more compatible with planets forming preferentially at special locations.
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Item Type: | Article (Commonwealth Reporting Category C) |
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Refereed: | Yes |
Item Status: | Live Archive |
Faculty/School / Institute/Centre: | No Faculty |
Faculty/School / Institute/Centre: | No Faculty |
Date Deposited: | 30 Mar 2022 02:13 |
Last Modified: | 28 Apr 2022 03:35 |
Uncontrolled Keywords: | planets and satellites: formation; Astrophysics - Earth and Planetary Astrophysics |
Fields of Research (2020): | 51 PHYSICAL SCIENCES > 5101 Astronomical sciences > 510109 Stellar astronomy and planetary systems |
Identification Number or DOI: | https://doi.org/10.1093/mnras/stx1272 |
URI: | http://eprints.usq.edu.au/id/eprint/47440 |
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