Download astr2310f10

ASTR 2310: Chapter 8

Overview of Solar System
–
Two types of planets
–
Physical properties of planets
•
Temperatures, densities, albedos, etc.
–
Retention of atmosphere
–
Solar System Formation
•
•
Protoplanetary disks, condensation, etc.
Post formation processes (catering, volcanoes)
ASTR 2310: Chapter 8
What is wrong with this picture? It's from NASA...
ASTR 2310: Chapter 8

Characteristics of the Planet Types
–
Mass
–
Composition
Terrestrial
Jovian
Low (upto Earth)
High (10x)
Rocky/Metal
High density
Gaseous
Low density
–
Rotation
18hr
slow – day+
fast <
–
Satellites
Few
Many
–
Orbital radius
< 2AU
>5AU
ASTR 2310: Chapter 8

Planet Masses – How?

Planet Sizes – How?

Planet Densities – How?

Planet Temperature more involved...
–
I'll do it on the board, also see text and wiki for
blackbodies as advertised..
ASTR 2310: Chapter 8

Albedos and graph presentation lesson:
–
http://www.numberpix.com/2006/04/reflections_on_the_planets_1.ht
ml
–
Never too early to learn this stuff!
ASTR 2310: Chapter 8
ASTR 2310: Chapter 8

Spectrum of Mars:
ASTR 2310: Chapter 8

Planetary escape velocity, gas temperature, and gasses
ASTR 2310: Chapter 8

Protoplanetary Disks:
ASTR 2310: Chapter 8

Cratering and Volcanic Flooding
–
Mercury is very much like the moon
–
Venus has active volcanoes, surface hidden
by clouds but not radar
–
Nice website from Guy Worthey* at WSU:
–
http://astro.wsu.edu/worthey/astro/html/lecmercvenus.html
–
*A Wyoming graduate