Loading...
Please wait, while we are loading the content...
Similar Documents
Planet formation around intermediate mass stars
| Content Provider | Scilit |
|---|---|
| Author | Kretke, Katherine A. Lin, D. N. C. Turner, Neal J. |
| Copyright Year | 2007 |
| Description | We present a mechanism by which gas giants form efficiently around intermediate mass stars. MRI-driven turbulence effectively drives angular momentum transport in regions of the disk with sufficiently high ionization fraction. In the inner regions of the disk, where the midplane temperature is above ∼1000K, thermal ionization effectively couples the disk to the magnetic field, providing a relatively large viscosity. A pressure maximum will develop outside of this region as the gaseous disk approaches a steady-state surface density profile, trapping migrating solid material. This rocky material will coagulate into planetesimals which grow rapidly until they reach isolation mass. Around intermediate mass stars, viscous heating will push the critical radius for thermal ionization of the midplane out to around 1 AU. This will increase the isolation mass for solid cores. Planets formed here may migrate inwards due to type II migration, but they will induce the formation of subsequent giant planets at the outer edge of the gap they have opened. In this manner, gas giants can form around intermediate mass stars at a few AU. |
| Related Links | https://www.cambridge.org/core/services/aop-cambridge-core/content/view/9074C285E1A9201DA17C4AC40BF107DC/S1743921308016724a.pdf/div-class-title-planet-formation-around-intermediate-mass-stars-div.pdf |
| Ending Page | 300 |
| Page Count | 8 |
| Starting Page | 293 |
| ISSN | 17439213 |
| e-ISSN | 17439221 |
| DOI | 10.1017/s1743921308016724 |
| Journal | Proceedings of the International Astronomical Union |
| Issue Number | S249 |
| Volume Number | 3 |
| Language | English |
| Publisher | Cambridge University Press (CUP) |
| Publisher Date | 2007-10-01 |
| Access Restriction | Open |
| Subject Keyword | Proceedings of the International Astronomical Union Astronomy and Astrophysics Formation Protoplanetary Disks |
| Content Type | Text |
| Resource Type | Article |
| Subject | Astronomy and Astrophysics Space and Planetary Science |
