- Code ASTR4017
- Unit Value 6 units
- Offered by Research School of Astronomy and Astrophysics
- ANU College ANU Joint Colleges of Science
- Course subject Astronomy and Astrophysics
- Areas of interest Astronomy and Astrophysics
This course is usually offered every odd year (eg 2019)
The course coversthe following topics: The diffuse universe; line emission processes; collisional excitation; line transfer effects; collision ionization equilibrium; cooling plasmas; interstellar shocks; theory of photoionised regions; parameters of photoionised regions and interstellar dust.
Students complete two assignments and a major project on the interstellar medium. The major project is presented as a written report and may be submitted to an astrophysical journal as a publication if the student chooses to prepare their report for a journal after course completion. The student presents their project to the class as an oral 20 minute (Power point style) presentation.
Upon successful completion, students will have the knowledge and skills to:
On satisfying the requirements of this course, students will
- Understand the processes by which continuum and line radiation is produced in the interstellar medium.
- Understand how collisional excitation and photoionization determine the populations of ions in their different energy levels.
- Understand the formation of the emission spectrum in photoionised regions including HII regions, planetary nebulae and active galactic nuclei; estimation of the parameters of such regions.
- Understand the formation of shocks in the interstellar medium and the resultant spectra.
- Understand the physics of the cooling function for astrophysical plasma and its important role in different contexts.
- Understand the physics of dust in the interstellar medium and its effect on the emitted spectrum.
2 x assignments each worth 25%. LO 1-6.
Major project: 50% LO 1-6.
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Workload4 hours per week of lectures and tutorials; 6 hours per week spent on assignments and the major project.
Requisite and Incompatibility
You will need to contact the Research School of Astronomy and Astrophysics to request a permission code to enrol in this course.
Prescribed TextsAstrophysics of the Diffuse Universe by M.A. Dopita and R.S. Sutherland. Springer, 2003, ISBN 3-540-43362-7 This may be purchased in book form. Alternatively an electronic version of this will be made available at a cost of $20.
Assumed KnowledgeStudents should have completed PHYS2013 – Quantum Mechanics and PHYS2016 – Electromagnetism, or their equivalents.
Tuition fees are for the academic year indicated at the top of the page.
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- Student Contribution Band:
- Unit value:
- 6 units
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