期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 469, 期 4, 页码 3910-3927出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stx1069
关键词
protoplanetary discs; interplanetary medium
资金
- National Sciences and engineering Research Council (NSERC) through the Alexander Graham Bell CGS/PGS Doctoral Scholarship
- NSERC Discovery Grant
- DFG [SPP 1833, KL 1469/13-1]
- NASA through Hubble Fellowship - Space Telescope Science Institute [HST-HF2-51356.001-A]
- NASA [NAS 5-26555]
- National Science Foundation [AST-1514670, AST-1344133]
- NASA XRP grant [NNX16AB48G]
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [1514670] Funding Source: National Science Foundation
- NASA [NNX16AB48G, 907915] Funding Source: Federal RePORTER
We present the next step in a series of papers devoted to connecting the composition of the atmospheres of forming planets with the chemistry of their natal evolving protoplanetary discs. The model presented here computes the coupled chemical and dust evolution of the disc and the formation of three planets per disc model. Our three canonical planet traps produce a Jupiter near 1 AU, a Hot Jupiter and a Super-Earth. We study the dependence of the final orbital radius, mass, and atmospheric chemistry of planets forming in disc models with initial disc masses that vary by 0.02 M-circle dot above and below our fiducial model (M-disc,(0) = 0.1 M-circle dot). We compute C/O and C/N for the atmospheres formed in our three models and find that C/O-planet similar to C/O-disc, which does not vary strongly between different planets formed in our model. The nitrogen content of atmospheres can vary in planets that grow in different disc models. These differences are related to the formation history of the planet, the time and location that the planet accretes its atmosphere, and are encoded in the bulk abundance of NH3. These results suggest that future observations of atmospheric NH3 and an estimation of the planetary C/O and C/N can inform the formation history of particular planetary systems.
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