Astronomy 2030H: The Interstellar
Medium and Star Formation
Chris Matzner
Tuesdays & Thursdays 2:00-3:30 pm, 15th floor conference room of
McLennan Labs
A graduate course covering the phases, dynamics, energetics,
and observations of the Interstellar Medium and the theory of star formation
within molecular clouds.
Text: Spitzer,
Physical Processes in the Interstellar Medium
Please refer to this (growing) reading list for your reference and the ISM / Star Formation Discussion Meetings for a format to review the papers.
1. Sept 11: Overview
of phases of the ISM; brief discussion of hydrostatic balance
and Toomre stability parameter of gaseous and stellar disks. |
Reading assignment: Ferriere 2001, Boulares & Cox 1990 from reading list. (For more on self-gravity of galaxy disks, see also Kennicutt 1989 and Schaye 2002.) |
2. Sept. 17: Basic radiation transfer and hydrodynamics | Problem set 1 assigned: due Tuesday Oct. 1 |
3. Sept. 19: Hydrodynamics and MHD | |
4. Sept. 24: Shock fronts: nonradiative, radiative, and magnetically-supported | Reading: Draine & McKee 1989 |
5. Sept. 26: Photoionized gas; H II regions | |
6. Oct. 2: Thermal balance for photoionized gas | Problem set 1 collected |
7. Oct. 3: Review
of spectroscopic notation and quantum mechanics (Brian Lee).
Critical density; determining gas state from lines |
|
8. Oct. 8: Dynamics of H II region expansion; Radio continuum & lines from H II regions | |
9. Oct. 10: Ionization
Fronts: D vs R, Strong vs Weak, D-critical case
Re-examination of early and late phases of H II region evolution |
Problem set 2 distributed |
10. Oct. 15: Cloud photoevaporation, rocket effect | |
11. Oct. 22: Diagnostics
of the warm photoionized medium (WIM): Dispersion measure,
Emission measure (+ models for Milky Way's free electron distribution) |
|
12. Oct. 23: More WIM diagnostics: Pulsar scintiallation; Faraday rotation | |
13. Oct. 24: Interstellar
Dust: optical properties, composition, physical evolution,
temperature |
|
14. Oct. 29: Diagnostics of the cool, neutral medium (CNM): Line profiles, 21cm line | Problem set 2 collected |
15. Oct. 31: Obs.
evidence for a two-phase neutral medium; thermal balance of HI;
2-phase model of Field, Goldsmith & Habing |
Problem set 3 distributed |
16. Nov 5: Hot, collisionally ionized medium (HIM): supernova remnant evolution | |
17. Nov. 7: HIM: radiation diagnostics | |
18. Nov. 12: Hot gas: heating and cooling; thermal evaporation of clouds | Problem set 3 collected |
19. Nov 14: A three-phase model for the interstellar medium | Problem set 4 distributed |
20. Nov. 19 Formation
of molecules; molecular cloud population and distribution
(Chris traveling: class will be rescheduled) |
|
21. Nov. 21 Formation and destruction of self-bound clouds: Galact ic perspective | Problem set 4 collected; Problem set 5 distributed |
22. Nov. 26 Magnetic, thermal, and turbulent pressure support; evolution towards collapse | |
23. Nov. 28 Star
formation: stages; observations
(Chris traveling: class will be rescheduled) |
Problem set 6 distributed |
24. Dec. 3 Theories of the stellar mass function | Problem set 5 collected; |
25. Dec. 5 Protostellar jets and outflows: observations and models | |
26. Dec. 10 | Problem set 6 collected |