Ay 1
The Evolving Universe
9 units (3-3-3); third term
|
This course is intended primarily for freshmen not expecting to take more advanced astronomy courses and will satisfy the menu requirement of the Caltech core curriculum
Introduction to modern astronomy that will illustrate the accomplishments, techniques, and scientific methodology of contemporary astronomy. The course will be organized around a set of basic questions, showing how our answers have changed in response to fresh observational discoveries. Topics to be discussed will include telescopes, stars, planets, the search for life elsewhere in the universe, supernovae, pulsars, black holes, galaxies and their active nuclei, and the Big Bang. There will be a series of laboratory exercises intended to highlight the path from data acquisition to scientific interpretation. Students will also be required to produce a term paper on an astronomical topic of their choice and make a short oral presentation. In addition, a field trip to Palomar Observatory will be organized. Not offered on a pass/fail basis.
Instructor:
Scoville
Ge/Ay 11 c
Introduction to Earth and Planetary Sciences: Planetary Sciences
9 units (3-0-6)
|
third term
Prerequisites: Ma 1 ab, Ph 1 ab.
A broad introduction to the present state and early history of the solar system, including terrestrial planets, giant planets, moons, asteroids, comets, and rings. Earth-based observations, observations by planetary spacecraft, study of meteorites, and observations of extrasolar planets are used to constrain models of the dynamical and chemical processes of planetary systems. Although Ge 11 abcd is designed as a sequence, any one term may be taken as a standalone course. Physicists and astronomers are particularly welcome.
Instructor:
Ingersol
Ay 20
Basic Astronomy and the Galaxy
10 units (3-1-6)
|
first term
Prerequisites: Ma 1 abc, Ph 1 abc or instructor's permission.
The electromagnetic spectrum and basic radiative transfer; ground and space observing techniques; "pictorial Fourier description" of astrophysical optics; Kepler's laws; exoplanets; stellar masses, distances, and motions; the birth, structure, evolution, and death of stars; the structure and dynamics of the Galaxy. Lessons will emphasize the use of order-of-magnitude calculations and scaling arguments in order to elucidate the physics of astrophysical phenomena. Short labs will introduce astronomical measurement techniques.
Instructor:
Johnson
Ay 21
Galaxies and Cosmology
9 units (3-0-6)
|
second term
Prerequisites: Ma 1 abc, Ph 1 abc or instructor's permission.
Cosmological models and parameters, extragalactic distance scale, cosmological tests; constituents of the universe, dark matter, and dark energy; thermal history of the universe, cosmic nucleosynthesis, recombination, and cosmic microwave background; formation and evolution of structure in the universe; galaxy clusters, large-scale structure and its evolution; galaxies, their properties and fundamental correlations; formation and evolution of galaxies, deep surveys; star formation history of the universe; quasars and other active galactic nuclei, and their evolution; structure and evolution of the intergalactic medium; diffuse extragalactic backgrounds; the first stars, galaxies, and the reionization era.
Instructor:
Djorgovski
Ay 30
Introduction to Modern Research
3 units (2-0-1)
|
second term
Weekly seminar open to declared Ay majors at the discretion of the instructor; nonmajors who have taken astronomy courses may be admitted. Course is intended for sophomores and juniors. This seminar is held in faculty homes in the evening and is designed to encourage student communication skills as they are introduced to faculty members and their research. Each week a student will review a popular-level article in astronomy for the class. Graded pass/fail.
Instructor:
Readhead
Ay 31
Writing in Astronomy
3 units (1-0-2)
|
third term
This course is intended to provide practical experience in the types of writing expected of professional astronomers. Example styles include research proposals, topical reviews, professional journal manuscripts, and articles for popular magazines such as Astronomy or Sky and Telescope. Each student will adopt one of these formats in consultation with the course instructor and write an original piece. An outline and several drafts reviewed by both a faculty mentor familiar with the topic and the course instructor are required. This course is most suitable for juniors and seniors. Fulfills the Institute scientific writing requirement.
Instructor:
Hillenbrand
Ay 40
Topics in Modern Astrophysics
6 units (2-0-4)
|
third term
Prerequisites: Ay 20. May be repeated for credit.
The course covers the process of star formation from both observational and theoretical perspectives. Topics include star-forming regions, physical processes in molecular clouds, core collapse and protostars, premain sequence stars, the impact of star formation upon environment, theoretical evolutionary models, primordial accretion disks, formation of planetary systems, circumstellar debris disks, star formation on galactic scales. Not offered 2012-13.
Ay 43
Reading in Astronomy and Astrophysics
Units in accordance with work accomplished, not to exceed 3
Course is intended for students with a definite independent reading plan or who attend regular (biweekly) research and literature discussion groups. Instructor's permission required. Graded pass/fail.
Instructor:
Staff
Ay 78 abc
Senior Thesis
9 units
Prerequisites: To register for this course, the student must obtain approval of the astronomy option representative and the prospective thesis adviser.
Previous SURF or independent study work can be useful experience. Course is open to senior astronomy majors only. Research must be supervised by a faculty member. Students wishing assistance in finding an adviser and/or a topic for a senior thesis are invited to consult with the astronomy option representative. The student will work with an advisor to formulate a research project, conduct original research, present new results, and evaluate them in the context of previously published work in the field. The first two terms are graded pass/fail and the grades are then changed at the end of the course to the appropriate letter grade for all three terms. In order to receive a passing grade for second term, a work plan and a preliminary thesis outline must be submitted. The written thesis of 20-100 pages must be completed and approved by the adviser and the option representative before the end of the third term.
Instructor:
Staff
Ay 101
Physics of Stars
11 units (3-2-6)
|
first term
Prerequisites: Ay 20 is recommended.
Physics of stellar interiors and atmospheres. Properties of stars, stellar spectra, radiative transfer, line formation. Stellar structure, stellar evolution. Nucleosynthesis in stars. Stellar oscillations.
Instructor:
Hillenbrand
Ay 102
Physics of the Interstellar Medium
9 units (3-0-6)
|
third term
Prerequisites: Ay 20 is recommended.
An introduction to observations of the inter-stellar medium and relevant physical processes. The structure and hydrodynamic evolution of ionized hydrogen regions associated with massive stars and supernovae, thermal balance in neutral and ionized phases, star formation and global models for the interstellar medium.
Instructor:
Ott
Ay/Ph 104
Relativistic Astrophysics
9 units (3-0-6)
|
second term
Prerequisites: Ph 1, Ph 2 ab.
This course is designed primarily for junior and senior undergraduates in astrophysics and physics. It covers the physics of black holes and neutron stars, including accretion, particle acceleration and gravitational waves, as well as their observable consequences: (neutron stars) pulsars, magnetars, X-ray binaries, gamma-ray bursts; (black holes) X-ray transients, tidal disruption and quasars/active galaxies and sources of gravitational waves. Interested students are encouraged to take Ay 125.
Instructor:
Phinney
Ay 105
Optical Astronomy Instrumentation Lab
10 units (0-6-4)
|
third term
Prerequisites: Ay 20.
An opportunity for astronomy and physics undergraduates (juniors and seniors) to gain firsthand experience with the basic instrumentation tools of modern optical and infrared astronomy. The 10 weekly lab experiments are expected to include radiometry measurements, geometrical optics, optical aberrations and ray tracing, spectroscopy, fiber optics, CCD electronics, CCD characterization, photon counting detectors, vacuum and cryogenic technology, and stepper motors and encoders. Not offered 2012-13
Ay 111 ab
Introduction to Current Astrophysics Research
3 units
|
second, third terms
This course is intended primarily for first-year Ay graduate students, although participation is open and encouraged. Students are required to attend seminar-style lectures given by astrophysics faculty members, describing their research, to attend the weekly astro-nomy colloquia, and to follow these with additional readings on the subject. At the end of each term, students are required to summarize in oral or written form (at the discretion of the instructor), one of the covered subjects that is of most interest to them.
Instructor:
Readhead
Ay 117
Statistics and Data Analysis in Astronomy
9 units (3-0-6)
|
second term
Prerequisites: CS 1 and instructors permission.
In modern astronomy, vast quantities of data are often available to researchers. The challenge is converting this information into meaningful knowledge about the universe. The primary focus of this course is the development of a broad and general tool set that can be applied to the student's own research. We will use case studies from the astrophysical literature as our guide as we learn about common pitfalls, explore strategies for data analysis, understand how to select the best model for the task at hand, and learn the importance of properly quantifying and reporting the level of confidence in one's conclusions. We will have weekly homework assignments, much of which will be done in class in a collaborative work environment.
Instructor:
Johnson
Ay 119
Methods of Computational Science
9 units (3-0-6)
|
third term
Open to graduate and upper-division undergraduate students in all options. Practical computational science methods useful in disciplines dealing with large and/or complex data sets. Topics include: Scientific databases and archives; data mining and exploration; data visualization techniques; practical techniques for physical modeling, including numerical and stochastic models; data sharing over networks, Web services, computational and data grids; design and understanding of scientific computational systems and experiments, and good software practices. Not offered 2012-13.
Ay 121
Radiative Processes
9 units (3-0-6)
|
first term
Prerequisites: Ph 125 or equivalent (undergraduates).
The interaction of radiation with matter: radiative transfer, emission, and absorption. Compton processes, coherent emission processes, synchrotron radiation, collisional excitation, spectroscopy of atoms and molecules.
Instructors:
Ott, Hallinan
Ay 122 ab
Astronomical Measurements and Instrumentation
9 units (3-0-6)
|
first, second terms
Prerequisites: Ph 106 or equivalent.
Measurement and signal analysis techniques throughout the electromagnetic spectrum with focus on infrared, optical, and ultraviolet techniques (a), on radio through submillimeter techniques (b), and on X-ray through gamma-ray techniques (c; not offered 2012-13). Telescopes, optics, detectors, radiometers, photometry, spectroscopy. Active/adaptive optics. Interferometers/arrays. Imaging devices and image processing. Antennae, receivers, mixers, and amplifiers. Space telescopes. Probability and statistics as relevant to astronomical measurement. Some lab work and observatory field trips.
Instructors:
(a) Steidel, Djorgovski; (b) Readhead, Hallinan
Ay 123
Structure and Evolution of Stars
9 units (3-0-6)
|
first term
Prerequisites: Ay 101; Ph 125 or equivalent (undergraduates).
Thermodynamics, equation of state, convection, opacity, radiative transfer, stellar atmospheres, nuclear reactions, and stellar models. Evolution of low- and high-mass stars, supernovae, and binary stars.
Instructors:
J. Cohen, Kulkarni
Ay 124
Structure and Dynamics of Galaxies
9 units (3-0-6)
|
second term
Prerequisites: Ay 21; Ph 106 or equivalent (undergraduates).
Stellar dynamics and properties of galaxies; kinematics and dynamics of our galaxy; spiral structure; stellar composition, masses, and rotation of external galaxies; star clusters; galactic evolution; binaries, groups, and clusters of galaxies.
Instructor:
Steidel
Ay 125
High-Energy Astrophysics
9 units (3-0-6)
|
third term
Prerequisites: Ph 106 and Ph 125 or equivalent (undergraduates).
High-energy astrophysics, Big Bang cosmology, the final stages of stellar evolution; supernovae, binary stars, accretion disks, pulsars; extragalactic radio sources; active galactic nuclei; black holes.
Instructor:
Kulkarni
Ay 126
Interstellar and Intergalactic Medium
9 units (3-0-6)
|
second term
Prerequisites: Ay 102 (undergraduates).
Physical processes in the interstellar medium. Ionization, thermal and dynamic balance of interstellar medium, molecular clouds, hydrodynamics, magnetic fields, H II regions, supernova remnants, star formation, global structure of interstellar medium.
Instructors:
Scoville, Sargent
Ay 127
Cosmology and Galaxy Formation
9 units (3-0-6)
|
third term
Prerequisites: Ay 21; Ph 106 or equivalent (undergraduates).
Cosmology; extragalactic distance determinations; relativistic cosmological models; galaxy formation and clustering; thermal history of the universe, microwave background; nucleosynthesis; cosmological tests.
Instructors:
Djorgovski, Hirata
Ge/Ay 132
Atomic and Molecular Processes in Astronomy and Planetary Sciences
9 units (3-0-6)
|
first term
Prerequisites: instructor's permission.
Fundamental aspects of atomic and molecular spectra that enable one to infer physical conditions in astronomical, planetary, and terrestrial environments. Topics will include the structure and spectra of atoms, molecules, and solids; transition probabilities; photoionization and recombination; collisional processes; gas-phase chemical reactions; and isotopic fractionation. Each topic will be illustrated with applications in astronomy and planetary sciences, ranging from planetary atmospheres and dense interstellar clouds to the early universe. Given in alternate years; offered 2012-13.
Instructor:
Blake
Ge/Ay 133
The Formation and Evolution of Planetary Systems
9 units (3-0-6)
|
first term
Review current theoretical ideas and observations pertaining to the formation and evolution of planetary systems. Topics to be covered include low-mass star formation, the protoplanetary disk, accretion and condensation in the solar nebula, the formation of gas giants, meteorites, the outer solar system, giant impacts, extrasolar planetary systems.
Instructor:
Knutson
Ge/Ay 137
Planetary Physics
9 units (3-0-6)
|
third term
Prerequisites: Ph 106 abc, ACM 95/100 abc.
Solar-system dynamics, with emphasis on slow changes in the orbit and rotation rates of planets and satellites. Topics: tidal friction, resonant orbits and rotation rates, gravitational fields of planets and satellites, dynamics of polar wandering, continental drift, and planetary rings.
Instructors:
Brown, Knutson
Ay 141 abc
Research Conference in Astronomy
3 units (1-0-2)
|
first, second, third terms
Oral reports on current research in astronomy, providing students an opportunity for practice in the organization and presentation of technical material. A minimum of two presentations will be expected from each student each year. In addition, students are encouraged to participate in a public-level representation of the same material for posting to an outreach website. This course fulfills the option communication requirement and is required of all astronomy graduate students who have passed their preliminary exams. It is also recommended for astronomy seniors. Graded pass/fail. (a) Cohen, Hallinan; (b) Hillenbrand, Johnson; (c) Scoville, Steidel .
Ay 142
Research in Astronomy and Astrophysics
Units in accordance with work accomplished
The student should consult a member of the department and have a definite program of research outlined. Approval by the student's adviser must be obtained before registering. 36 units of Ay 142 or Ay 143 required for candidacy for graduate students. Graded pass/fail.
Ay 143
Reading and Independent Study
Units in accordance with work accomplished
The student should consult a member of the department and have a definite program of reading and independent study outlined. Approval by the student's adviser must be obtained before registering. 36 units of Ay 142 or Ay 143 required for candidacy for graduate students. Graded pass/fail.
Ge/Ay 159
Planetary Evolution and Habitability
9 units (3-0-6)
|
second term
Photochemistry of planetary atmospheres, comparative planetology, atmospheric evolution. What makes Earth habitable? Remote sensing of extrasolar planets, biosignatures. Given in alternate years; offered 2012-13.
Instructor:
Yung
Ay 190
Computational Astrophysics
9 units (3-0-6)
|
second term
Prerequisites: Ph 20-22 (undergraduates).
Introduction to essential numerical analysis and computational methods in astrophyics and astrophysical data analysis. Basic numerical methods and techniques; N-body simulations; fluid dynamics (SPH/grid-based); MHD; radiation transport; reaction networks; data analysis methods; numerical relativity. Not offered 2012-13.
Ay 211
Contemporary Extragalactic Astronomy
9 units (3-0-6)
|
second term
Prerequisites: Ay 123, Ay 124, and Ay 127.
Topics in extragalactic astronomy and cosmology, including observational probes of dark matter and dark energy; cosmological backgrounds and primordial element abundances; galaxy formation and evolution, including assembly histories, feedback and environmental effects; physics of the intergalactic medium; the role of active galactic nuclei; galactic structure and stellar populations; future facilities and their likely impact in the field. Not offered 2012-13.
Ay 215
Seminar in Theoretical Astrophysics
9 units (3-0-6)
|
second term
Course for graduate students and seniors in astronomy and planetary science. Students will be required to lead some discussions. Topic will be selected based on student interest. Not offered 2012-13.
Ay 218
Extrasolar Planets
9 units (3-0-6)
|
third term
Close to 500 planets have been identified in orbit around normal stars. Astronomers are now embarking on understanding the statistics of extrasolar planet populations and characterizing with great precision individual planets, namely, determining their masses, radii, and in some cases, diagnosing their atmospheres. The course will review the state of extrasolar planets, take up case studies, and anticipate findings. Not offered: 2012-13.
Ay 219
Element Abundances from the Big Bang to the Present
9 units (3-0-6)
|
third term
Prerequisites: Ay 121, 123, 124, 126.
Survey of the formation of the elements in the universe as a function of cosmic time. Review of the determination of abundances in meteorites, stars, H II regions, and in interstellar and intergalactic gas using the electromagnetic spectrum from radio waves to X rays. Theory of nucleosynthesis in stars, supernovae and the Big Bang, including the s- and r-processes and explosive nucleosynthesis. Particular attention will be paid to the theory and observation of element synthesis in the "First Stars" in the universe. Emphasis will be placed on the connection between element synthesis, the initial mass function of star formation, and galactic evolution, including the role of galactic winds. Not offered 2012-13.
Published Date:
July 28, 2022