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Building protoplanetary disks from the molecular cloud: redefining the disk timeline
- Source :
- Astronomy and Astrophysics-A&A, Astronomy and Astrophysics-A&A, 2019, 624, pp.A93. ⟨10.1051/0004-6361/201730677⟩, Astronomy and Astrophysics-A&A, 2019, ⟨10.1051/0004-6361/201730677⟩, Astronomy and Astrophysics-A&A, EDP Sciences, 2019, ⟨10.1051/0004-6361/201730677⟩, Astronomy and Astrophysics-A&A, EDP Sciences, 2019, 624, pp.A93. ⟨10.1051/0004-6361/201730677⟩
- Publication Year :
- 2019
- Publisher :
- EDP Sciences, 2019.
-
Abstract
- We study the formation of the protoplanetary disk by the collapse of a primordial molecular cloud, and how its evolution leads to the selection of specific types of planets. We use a hydrodynamical code that accounts for the dynamics, thermodynamics, geometry, and composition of the disk to numerically model its evolution as it is fed by the infalling cloud material. As the mass accretion rate of the disk onto the star determines its growth, we can calculate the stellar characteristics by interpolating its radius, luminosity, and temperature over the stellar mass from pre-calculated stellar evolution models. The density and midplane temperature of the disk then allow us to model the interactions between the disk and potential planets and determine their migration. At the end of the collapse phase, when the disk reaches its maximum mass, it pursues its viscous spreading, similarly to the evolution from a minimum mass solar nebula (MMSN). In addition, we establish a timeline equivalence between the MMSN and a "collapse-formed disk" that would be older by about 2 Myr. We can save various types of planets from a fatal type-I inward migration: in particular, planetary embryos can avoid falling on the star by becoming trapped at the heat transition barriers and at most sublimation lines (except the silicates one). One of the novelties concerns the possible trapping of putative giant planets around a few astronomical units from the star around the end of the infall. Moreover, trapped planets may still follow the traps outward during the collapse phase and inward after it. Finally, this protoplanetary disk formation model shows the early possibilities of trapping planetary embryos at disk stages that are anterior by a few million years to the initial state of the MMSN approximation.<br />14 pages, 11 figures, accepted in A&A 2019
- Subjects :
- planets and satellites: dynamical evolution and stability
010504 meteorology & atmospheric sciences
Stellar mass
[SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP]
FOS: Physical sciences
Minimum mass
Astrophysics
Protoplanetary disk
01 natural sciences
accretion
Planet
0103 physical sciences
Astrophysics::Solar and Stellar Astrophysics
planets and satellites: formation
010303 astronomy & astrophysics
Stellar evolution
planet–disk interactions
Astrophysics::Galaxy Astrophysics
0105 earth and related environmental sciences
Earth and Planetary Astrophysics (astro-ph.EP)
Physics
[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph]
accretion disks
Molecular cloud
protoplanetary disks
Astronomy and Astrophysics
Accretion (astrophysics)
13. Climate action
Space and Planetary Science
hydrodynamics
Astrophysics::Earth and Planetary Astrophysics
Formation and evolution of the Solar System
Astrophysics - Earth and Planetary Astrophysics
Subjects
Details
- ISSN :
- 14320746 and 00046361
- Volume :
- 624
- Database :
- OpenAIRE
- Journal :
- Astronomy & Astrophysics
- Accession number :
- edsair.doi.dedup.....d149c35518baf623ffb613addca00298