ASTR 542 Nebular Astrophysics

ASTR 542: Nebular Astrophysics

Course Information and Syllabus
Spring 2017

Instructor: Dr. Patrick Hartigan, Hermann Brown 350, Phone: X2245

Time: MWF 1:00 pm - 1:50 pm ; presentation days may go longer.

Room: HBH 254

Office Hours: After class on Mon and by appt.

Auditors: Should attend class and choose at least one subject to review, but may do problems or not as they wish.

Spitzer, "Physical Processes in the Interstellar Medium" Osterbrock, "Astrophysics of Gaseous Nebulae and Active Galactic Nuclei", Shu, "Gas Dynamics", and Rybicki and Lightman, "Radiative Processes in Astrophysics" are good reference texts for various parts of the course. We will also work from notes and handouts. Auditors must attend class and should read articles we are studying, but need not do problems or exams.

Grading: Based on class preparation (10%), presentations (30%), homeworks (30%), and a final oral exam (30%)

Honor Code: The only possible issues will be the final oral exam, which you may not discuss with anyone until everyone has taken it, and the homeworks, which you should endeavor as much as possible to do on your own, carefully documenting any personal help other than from me that you receive on them. You must work on each problem by yourself for at least an hour before seeking help.


M 1/9 Course overview, Review of Radiative Transfer, LTE
W 1/11 Physical Processes, Collisions, Charge Exchange
F 1/13 QM Overview
M 1/16 ***NO CLASS*** [MLK Holiday]
W 1/18 Photoexcitation, Oscillator Strengths, Einstein A & B, Fluorescence
F 1/20 Photoionization, Milne relation, Departure Coefficients
M 1/23 Recombination Spectra, Balmer Decrements, Case A and B
W 1/25 Application: Local ISM, Curves of Growth, Ly-a Shells and HI Walls
F 1/27 Paper [short1]: 'Local ISM' Lallement et al 2003 A&A 411 447 [Laura]
" Paper [short2]: 'Astrospheres' Wood and Linksy 1998, ApJ 492, 788 [Erik]
M 1/30 Collisional Ionization, Energy Levels
W 2/1 Isoelectronic Sequences, Selection Rules
F 2/3 Collisional excitation, Forbidden Lines
M 2/6 Te, Ne, f, HDL, LDL, t-square
W 2/8 Stromgren spheres, Zanstra T
F 2/10 ***SPRING RECESS*** [no class]
M 2/13 Application: H II regions
W 2/15 Paper [long1]: 'PDRs'; 1997 AnnRev Astr Ap 35, 179 [Laura]
F 2/17 Thermal Equilibrium
M 2/20 Thermal Equilibrium [HMWK 1 DUE]
W 2/22 Application: Planetary Nebulae
F 2/24 Paper [long2]: 'Phases of ISM'; 2001, Rev Mod Phys 73, 1031 [Andy]
F 2/27 Backup Day
W 3/1 Dynamics - Fluid Equations
F 3/3 Dynamics - Instabilities
M 3/6 Dynamics - Shocks
W 3/8 Dynamics - Shocks
F 3/10 Dynamics - Ionization Fronts [HMWK 2 DUE]
M 3/13 ***SPRING BREAK*** [no class]
W 3/15 ***SPRING BREAK*** [no class]
F 3/17 ***SPRING BREAK*** [no class]
M 3/20 Application: Photoevaporated Disks
W 3/22 Paper [long3]: 'Photoevaporated Disks'; Henney and O'Dell 1999, AJ 118, 2350 [group]
M 3/24 Application: Supernova Remnants
M 3/27 Paper [short3]: 'Supernova Remnants'; Sankrit et al 2008, AJ 135, 538 [Maxwell]
" Paper [short4]: 'Orion/Eridanus Superbubble' Ochsendorf et al. 2015, ApJ 808, 111 [Jason]
W 3/29 Dust
F 3/31 Dust
M 4/3 Free-free, synchrotron, dispersion, rotation measures
W 4/5 Applications: nova shells, pulsar nebulae
F 4/7 Paper [long4]: 'Nova Shells'; Williams and Mason, 2010, Ap.Sp.Sci. 327, 207 [Jason]
M 4/10 Paper [long5]: 'Crab Nebula'; Hester, 2008, Ann. Rev. Astr. Ap. 46, 127 [Maxwell]
W 4/12 Molecular spectra
F 4/14 Application: Molecular Clouds
M 4/17 Paper [long6]: 'Molecular Clouds'; Heyer et al. 2006, ApJ 643, 956 [Erik]
W 4/19 Application: Stellar Jets
F 4/21 Paper [short5]: 'Stellar Jets' ; Hartigan 2008, Lecture Notes in Physics 742, 15 [Andy]
F 4/21 [HMWK 3 DUE]
M 5/3***EXAMS***

Other references:
Local ISM review: Frisch, Redfield and Slavin 2011, ARAA 49, 237
Local ISM: Redfield and Linsky 2008, ApJ 673, 283
High Velocity Clouds: Wakker et al 2003 ApJS 146, 1
Warm Ionized Gas: Madsen et al. 2006, ApJ 652, 401
CO to H2 Conversion: Bolatto et al 2013 ARAA 51, 207
Ly-alpha Forest: 2009 Rev. Modern Phys 81, 1405

Presentations should not be limited strictly to what is in the paper. Each of these is like a long AU presentation.


Students completing this class should be able to do the following:

Disabled Students: Students with a documented disability that impacts their work in this class should contact me to discuss their needs. Disabled students should also register with the Disability Support Services Office in the Ley Student Center.