期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 499, 期 2, 页码 2015-2027出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/staa2933
关键词
accretion, accretion discs; hydrodynamics; stars: individual: (PDS 70)
资金
- PRIN-INAF 2016 The Cradle of Life -GENESIS-SKA (General Conditions in Early Planetary Systems for the rise of life with SKA)
- Italian Ministry of Education, Universities and Research (MIUR)
- grant Progetti Premiali 2012 -iALMA [CUP C52I13000140001]
- project SIR [RBSI14ZRHR]
- Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) [FOR 2634/1ER685/11-1]
- DFG cluster of excellence ORIGINS
- EU Horizon 2020 -Research and Innovation Framework Programme, Marie Sklodowska-Curie [823823]
- Australian Research Council [FT170100040, DP180104235]
- ANR of France [ANR-16-CE31-0013]
The disc surrounding PDS 70, with two directly imaged embedded giant planets, is an ideal laboratory to study planet-disc interaction. We present 3D smoothed particle hydrodynamics simulations of the system. In our simulations, planets, which are free to migrate and accrete mass, end up in a locked resonant configuration that is dynamically stable. We show that features observed at infrared (scattered light) and millimetre (thermal continuum) wavelengths are naturally explained by the accretion stream on to the outer planet, without requiring a circumplanetary disc around Planet c. We post-processed our near-infrared synthetic images in order to account for observational biases known to affect high-contrast images. Our successful reproduction of the observations indicates that planet-disc dynamical interactions alone are sufficient to explain the observations of PDS 70.
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