Catalog description
Studies the Milky Way, stellar populations, kinematics, rotation curves, spiral structure, chemical evolution, dark matter, Galactic center, and nearby galaxies.
Learning outcomes
- Construct Galactocentric positions and velocities from observables while stating coordinate and distance assumptions.
- Interpret color-magnitude diagrams, abundance patterns, and kinematic distributions as records of formation history.
- Derive and apply dynamical mass relations, rotation-curve models, resonance conditions, and virial estimators.
- Compare baryonic and dark-matter explanations using independent tracers and uncertainty-aware model comparison.
- Explain Galactic-center and Local-Group observations without confusing an inferred model with a direct image.
- Produce reproducible, sourced figures and communicate limitations, selection effects, and approximation honesty.
Resources
Primary open resource: OpenStax Astronomy 2e, Chapter 25 (The Milky Way Galaxy) and Chapter 26 (Galaxies). Exact section/figure mapping was checked against the local extracted text; see reference-log.md. Supplemental sources are listed there.
Assessment
| Component | Weight |
|---|---|
| 7 problem sets | 30% |
| 7 data-analysis labs | 30% |
| Midterm, Lectures 1–7 | 15% |
| Final, cumulative | 20% |
| Reading checks and participation | 5% |
Revisions and resubmissions are encouraged within one week of feedback when accompanied by a concise change note. High standards for reasoning, units, evidence, uncertainty, and reproducibility remain in force.
Cadence rationale
This package uses 14 lectures, 7 labs, and 7 problem sets in a matched 1:1 biweekly cadence. The rationale is structural rather than merely conventional: the course has seven two-lecture units (Galactic map; observables; populations; phase space; rotation; spiral structure; chemistry; dark matter; center; Local Group; scaling; inference; synthesis are grouped into coherent pairs in the schedule). Each lab follows its paired lectures and each problem set asks students to reuse that unit's equations and data. A one-to-one cadence prevents a lab from requiring a later concept and makes the assessment load predictable for a three-credit Year 4 elective.
Lecture, lab, and problem-set schedule
| Lecture | Title | Paired work | Assignment |
|---|---|---|---|
| 01 | The Galactic View: Scale, Coordinates, and Components | Lecture block | |
| 02 | From Light to Orbits: Galactic Coordinates and Distances | Lab 01 | PS 01 |
| 03 | Stellar Populations as Fossils of Formation | Lecture block | |
| 04 | Stellar Motions and the Galactic Phase Space | Lab 02 | PS 02 |
| 05 | The Rotation Curve and the Missing Mass | Lecture block | |
| 06 | Spiral Structure, Bars, and Galactic Resonances | Lab 03 | PS 03 |
| 07 | Chemical Evolution of the Galactic Disk | Lecture block | |
| 08 | Dark Matter Halos and the Local Mass Budget | Lab 04 | PS 04 |
| 09 | The Galactic Center: Black Hole, Bulge, and Nuclear Environment | Lecture block | |
| 10 | Nearby Galaxies and the Local Group | Lab 05 | PS 05 |
| 11 | Scaling Relations: Tully-Fisher and Galaxy Structure | Lecture block | |
| 12 | Inference with Galactic Surveys | Lab 06 | PS 06 |
| 13 | Galactic Archaeology and the Milky Way in Time | Lecture block | |
| 14 | A Working Synthesis: What Makes a Galaxy? | Lab 07 | PS 07 |
Policies and assumptions
Students need calculus-based mechanics, electromagnetism, stellar-structure reasoning, and introductory statistics. Python, NumPy, Matplotlib, and Astropy are used in the labs. Data files are teaching extracts with provenance labels; students must not present them as newly observed data. Accessibility accommodations, local academic-integrity policy, and final calendar dates are instructor-provided at adoption.