Prof Wladimir Lyra Live Oak 1119G Office Hours Mon 4pm5pm Class hours MonWed 5pm615pm Formation by Core Accretion Inward of snowline Accreting rocky cores small Outward of snowline ID: 560454
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Slide1
Selected Topics in Astrophysics
Prof Wladimir
LyraLive Oak, 1119-GOffice Hours: Mon 4pm-5pmClass hours: Mon/Wed 5pm-6:15pmSlide2
Formation by Core Accretion
Inward of snowline
Accreting
rocky cores
(small)
Outward of snowline
Ice comes to aid!
Growing big
icy/rocky cores.
These guys got so big
they started accreting
gas from the nebula!
These ones never did.
They are just the icy/rocky cores.Slide3
Potential of oblate bodies
Newton’s second theorem
“A spherically symmetric body affects external objects as if all its mass was concentrated in its center”Slide4
But planets are not spherically symmetricSlide5
Oblateness
caused by rotation
Gravitational Potential
Jupiter
Saturn
14696.4+/-0.2
16290.7+/-0.3
587+/-2
936+/-3
34+/-5
86+/-9
J
2
(x10
-6
)
J
4
(x10
-6
)
J
6
(x10
-6
)Slide6Slide7Slide8