Astronomy

219 Prospect St., 203.432.3000
http://astronomy.yale.edu
M.S., M.Phil., Ph.D.

Chair
Priyamvada Natarajan

Director of Graduate Studies
Pieter van Dokkum (203.432.3000, pieter.vandokkum@yale.edu)

Professors Héctor Arce, Charles Bailyn, Charles Baltay (Physics), Sarbani Basu, Paolo Coppi, Pierre Demarque (Emeritus), Debra Fischer (Emeritus), Marla Geha, Larry Gladney (Physics), Jeffrey Kenney, Richard Larson (Emeritus),  Priyamvada Natarajan, C. Megan Urry (Physics), William van Altena (Emeritus), Frank van den Bosch, Pieter van Dokkum, Robert Zinn

Associate Professors Reina Maruyama (Physics), Daisuke Nagai (Physics), Nikhil Padmanabhan (Physics)

Assistant Professor Earl Bellinger, Laura Newburgh (Physics), Chiara Mingarelli (Physics), Malena Rice

Fields of Study

Fields include observational and theoretical astronomy, solar and stellar astrophysics, exoplanets, the interstellar medium and star formation, galactic astronomy, extragalactic astronomy, radio astronomy, high-energy astrophysics, and cosmology.

Special Requirements for the Ph.D. Degree

A typical program of study includes twelve courses taken during the first four terms, and must include the core courses listed below.

Core Courses
ASTR 5000The Physics of Astrophysics1
ASTR 5100Stellar Populations1
or ASTR 5500 Stellar Astrophysics
ASTR 5200Computational Methods in Astrophysics and Geophysics 11
ASTR 5300Galaxies1
or ASTR 5650 The Evolving Universe
ASTR 5550Observational Astronomy1
ASTR 5600Interstellar Matter and Star Formation1

Students require the permission of the instructor and the DGS to skip a core class if they think that they have sufficient knowledge of the field. Students will be required to demonstrate their knowledge of the field before they are allowed to skip any core class.

Two of the twelve courses must be research credits, each earned by working in close collaboration with a faculty member. Of the two research credits, one must be earned doing a theoretical research project and one doing an experimental research project. The students need to present the results of the project as a written report and will be given an evaluation of their performance.

The choice of the four remaining courses depends on the candidate’s interest and background and must be decided in consultation with the DGS and/or the prospective thesis adviser. Advisers may require students to take particular classes and obtain a specified minimum grade in order for a student to work with them for their thesis. Students must take any additional course that their supervisors require even after their fourth term. In addition, all students, regardless of their term of study, have to attend Professional Seminar (ASTR 7100 and ASTR 7110) every term, unless registered in absentia. Students must also take Responsible Conduct in Research for Physical Scientists (PHYS 5900), which discusses ethics and responsible conduct in scientific research and fulfills the requirement stipulated by the National Science Foundation for all students and for all postdoctoral researchers funded by the NSF. Note that ASTR 7100, ASTR 7110, and PHYS 5900 may not be used to fulfill the twelve-course requirement.

Students are encouraged to take graduate courses in physics or related subjects. On an irregular basis, special topic courses and seminars are offered, which provide the opportunity to study some fields in greater depth than is possible in standard courses. To achieve both breadth and depth in their education, students are encouraged to take a few courses beyond their second year of study.

There is no foreign language requirement. An oral qualifying exam, normally taken at the end of the fourth term of graduate work, tests the student’s familiarity with the field in which the student plans to do research, and on the material covered in three thesis work-relevant taught courses taken by the student during the first two year.

Teaching experience is an integral part of graduate education in astronomy. All students are required to serve as teaching fellows for four terms. Both the level of teaching assignments and the scheduling of teaching are variable and partly determined by the needs of the department. Most students will teach in each of their first three terms and complete their fourth teaching assignment sometime after the qualifying exam. Students who require additional support from the graduate school must teach additional terms, if needed, after they have fulfilled the academic teaching requirement.

Honors Requirement

Students must earn a grade of Honors in at least three classes by the end of the fourth term of full-time study and have a grade average of High Pass or better.

Master’s Degrees

M.Phil. Upon application, the department will recommend for the award of the M.Phil. degree any student who has completed all the requirements of the Ph.D. degree except the Ph.D. dissertation. These requirements include taking and passing the qualifying exam and submission of the research projects’ final written reports (one for each of the two ASTR 5800 projects).

M.S. Students who withdraw from the Ph.D. program may be eligible to receive the M.S. degree if they have met the requirements and have not already received the M.Phil. degree. For the M.S., students must successfully complete at least nine courses (not including ASTR 7100 and ASTR 7110) and at least one research project (ASTR 5800). The student should have a grade average of High Pass in the courses and a grade of High Pass or above in the research project.

Program materials are available upon request to the Director of Graduate Studies, Department of Astronomy, Yale University, PO Box 208101, New Haven CT 06520-8101.

Courses

ASTR 5000a, The Physics of AstrophysicsSarbani Basu

Primarily for incoming students in the Ph.D. program in Astronomy. The basic physics and related mathematics needed to take the advanced graduate courses. Topics in mechanics, thermodynamics and statistical mechanics, fluid mechanics, special relativity, and electrodynamics with applications to astrophysical systems are covered. Open to undergraduates with permission of the instructor.
MW 9am-10:15am

ASTR 5180a, Stellar DynamicsMarla Geha

The study of dynamics in astronomy. Stellar dynamics attempts to answer what happens when a large number of particles (stars or galaxies) orbit under the influence of their mutual gravity. This course covers the dynamics of astronomical objects ranging from binary stars to globular clusters to galaxies. Particular emphasis is placed on direct applications to observational data.
TTh 1:05pm-2:20pm

ASTR 5200a / EPS 5380a, Computational Methods in Astrophysics and GeophysicsPaolo Coppi

The analytic and numerical/computational tools necessary for effective research in astronomy, geophysics, and related disciplines. Topics include numerical solutions to differential equations, spectral methods, and Monte Carlo simulations. Applications are made to common astrophysical and geophysical problems including fluids and N-body simulations.
MW 4pm-5:15pm

ASTR 5500b, Stellar AstrophysicsSarbani Basu

An introduction to the physics of stellar atmospheres and interiors. The basic equations of stellar structure, nuclear processes, stellar evolution, white dwarfs, and neutron stars.
MW 9am-10:15am

ASTR 5650a, The Evolving UniversePieter van Dokkum

Overview of cosmic history from the formation of the first star to the present day, focusing on direct observations of the high-redshift universe.
TTh 9am-10:15am

ASTR 5700b / PHYS 570 / PHYS 5700b, High-Energy AstrophysicsPaolo Coppi

A survey of current topics in high-energy astrophysics, including accreting black hole and neutron star systems in our galaxy, pulsars, active galactic nuclei and relativistic jets, gamma-ray bursts, and ultra-high-energy cosmic rays. The basic physical processes underlying the observed high-energy phenomena are also covered.
MW 2:35pm-3:50pm

ASTR 5750b, ExoplanetsMalena Rice

In recent years hundreds of exoplanets have been discovered orbiting around other stars. This course reviews the physics of planetary orbits, current exoplanet detection techniques, recent progress in characterizing exoplanet interiors and atmospheres, and the implications of these findings for our understanding of planet formation and evolution.
TTh 9am-10:15am

ASTR 5800a or b, ResearchStaff

By arrangement with faculty.
HTBA

ASTR 6100b, The Theory of Galaxy FormationFrank van den Bosch

This astronomy course focuses on the physical processes associated with galaxy formation. Topics include Newtonian perturbation theory, the spherical collapse model, formation and structure of dark matter haloes (including Press-Schechter theory), the virial theorem, gravitational interactions, cooling processes, theory of star formation, feedback processes, and numerical simulations. The course also includes a detailed treatment of statistical tools used to describe the large-scale distribution of galaxies and introduces the student to the concepts of galaxy bias and halo occupation modeling. During the final lectures we discuss a number of outstanding issues in galaxy formation.
MW 9am-10:15am

ASTR 6660a / AMTH 666 / EPS 6660a / MATH 6660a, Classical Statistical ThermodynamicsJohn Wettlaufer

Classical thermodynamics is derived from statistical thermodynamics. Using the multi-particle nature of physical systems, we derive ergodicity, the central limit theorem, and the elemental description of the second law of thermodynamics. We then develop kinetics, the origin of diffusion, transport theory, and reciprocity from the linear thermodynamics of irreversible processes. Topics of focus include Onsager reciprocal relations, the Fokker-Planck and Cahn-Hilliard equations, stability in the sense of Lyapunov, time invariance symmetry and maximum principles. We explore phenomena cross a range of problems in science and engineering. Prerequisites for Yale College students: PHYS 301, PHYS 410, MATH 246 or similar and/or permission of instructor.
MW 11:35am-12:50pm

ASTR 7100a and ASTR 7110b, Professional SeminarStaff

A weekly seminar covering science and professional issues in astronomy.
M 1:30pm-3:25pm