Module manager: Dr Catherine Walsh
Email: C.Walsh1@leeds.ac.uk
Taught: Semester 1 (Sep to Jan) View Timetable
Year running 2026/27
Level 6 Physics or equivalent
| PHAS3100 | Star and Planet Formation |
PHAS5140M
This module is not approved as an Elective
Stars and their surrounding planetary systems form from material within large, cold, and dense molecular clouds found throughout the interstellar medium. The study of the physical processes underpinning the formation of stars is fundamental for understanding the origin of the mass distribution of stars in galaxies, injection of mass and energy into the interstellar medium of galaxies, and the first steps towards the formation of planetary systems. This module will instruct on the physics governing i) the formation of stars and planet-forming discs, and ii) the impact of young stars on their immediate environment. Also covered will be current knowledge based on observations across multiple wavelengths from state-of-the-art telescopes.
Students will be able to demonstrate knowledge, understanding and application of:
- The physical conditions under which stars form in interstellar clouds;
- The physical processes that occur during the collapse of a gas cloud to form a star;
- The observational tools used, and evidence for, discs, jet, and outflows from young stars;
- Current knowledge in this field, and its limitations.
On successful completion of the module students will have demonstrated the following learning outcomes relevant to the subject:
1) Make effective use of physics skills and knowledge to applications in Astrophysics.
Skills Learnings Outcomes
a) The ability to solve physical problems using mathematics.
b) Critical analysis and interpretation of astronomical observations.
c) Synthesis and communication of information in the published literature.
I. Sites of Star Formation: the interstellar medium, molecular clouds, interstellar dust.
II. Gravitational Collapse: cloud equilibrium and stability, the collapse of dense cloud cores, fragmentation, protostars, accretion discs.
III. Feedback: jets, molecular outflows, HII regions, triggered star formation.
| Delivery type | Number | Length hours | Student hours |
|---|---|---|---|
| Lecture | 25 | 1 | 25 |
| Private study hours | 125 | ||
| Total Contact hours | 25 | ||
| Total hours (100hr per 10 credits) | 150 | ||
125 hours of Private Study Time.
Feedback on coursework
Check the module area in Minerva for your reading list
Last updated: 30/04/2026
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