Class Notes (807,343)
Canada (492,710)
Astronomy (103)
ASTA01H3 (77)
Lecture 17

key points (lecture 17, 18 and 19)

6 Pages
Unlock Document

University of Toronto Scarborough
Rick Halpern

Lecture 17: Saturn o Rings go through phases o Density less than water o 13 mass of Jupiter o Rotation speed squashes the Saturn so that equatorial diameter is 10% bigger o Atmosphere o Zones and band structures less colouration than Jupiter o Cloud layer thicker than Jupiter o Consists of molecular hydrogen, helium, methane and ammonia o Experiences a rain of helium from upper clouds o Similar to jupiters atmosphere but less pressure o Wind pattern same as Jupiter with zonal flow o Interior Structure o Molecular hydrogen, Metallic hydrogen and icy rocky core o Bottom of molecular hydrogen layer is hotter than Suns photosphere o Saturn radiates 3 times more energy than it gets because its cooling off o Helium and hydrogen not mixed well, helium condenses into droplets and falls back o Gravitational field compresses helium and heats it up o Magnetosphere o Saturn has a strong magnet field but only 5% of jupiters, creates aurorae o Rings o 250 000km diameter and 1 km thick o Ring system from closest to Saturn 1. C Ring 2. B Ring 3. Cassini Division 4. A Ring 5. Encke Gap o Ring crossing occur every 15 years o Ring phases occur due to the tilt of rings relative to orbital plane o Formation of rings unknown probably from catastrophic event o Particles range from few millimeters to tens of meters o Composition: water, ice o Rings cannot form into a moon because of tidal forces would tear it apart o Rings lie within the Roche limit (closest distance that moon
More Less

Related notes for ASTA01H3

Log In


Don't have an account?

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.