PHYS2160
Astronomy
Level
2 Physics course
3UOC
Offered
every year, Session 2
Information
for Session 2, 2011
Lecturer:
Prof. John K. Webb
Room
121, Old Main Building (arrange appointment by email)
jkw@phys.unsw.edu.au,
9385 5578
Lecture
times: Wednesday 11-12 OMB G32, Thursdays 10-11 Rupert Myers Theatre.
Brief
Syllabus:
Our
Galaxy; other galaxies; active galactic nuclei; distance
scale and large-scale structure of the universe; cosmology.
Assumed
Knowledge:
The
course assumes familiarity with first year physics, e.g.
PHYS1002 or PHYS1221 or PHYS1231 or PHYS1241 or PHYS1022.
Course
Goals and learning objectives
This
course provides a broad introduction to some of the most
fascinating concepts in modern science. In general terms,
it is hoped that the course will hone your critical thinking
skills, will lead to a better understanding of the nature
of science, and allow you to appreciate the plethora of
intriguing astrophysical objects the universe has to offer.
You will understand astronomical sizes and scales, and discover
the structure of the universe. You may well also develop
an increased interest in following up new discoveries in
astronomy, as a life-long learning activity.
Why
is astronomy important?
Through
a desire to understand astronomical observations of the
observed universe came our present knowledge of fundamental
subjects such as mechanics and gravity. Whilst astronomy
is probably the oldest science, the revolution it has experienced
within the last decade arguably also makes it the youngest.
New technological advances, new large ground-based telescopes
and telescopes in space, provide new views of unprecedented
precision into the furthest realms of the universe ever
reached. Whilst pure research is not usually strongly motivated
by practical spin-offs, these do sometimes occur, an example
being the development of CCD detectors. More importantly,
astronomy is fascinating in its own right, and is intimately
linked with other fundamental areas in science such as particle
physics. This helps astronomy play an invaluable role in
heightening general interest in science, and encouraging
education in other important and practical areas of science
and mathematics.
Assessment
Two
assignments, each worth 10%
Mid-session
test, 20%
Final
exam, 60%
There
are also tutorial exercises. These are not formally assessed,
but are designed to assist in doing well with the assessed
work.
For
rules regarding academic honesty, etc, see the School website here.
Resources
Printed
copies of all lecture notes are available for each student.
The course is not designed around any specific textbook.
However, several books are used:
M.
Zeilik & S. Gregory, Introductory Astronomy & Astrophysics,
(Saunders)
F.
Shu, The Physical Universe – an introduction to astronomy,
(University Science Books)
The
following are all good introductory texts on astronomy,
with excellent illustrations, but the material is covered
at a lower level than this course:
- W.
Kaufmann, R. Freedman, Universe, (Freeman)
- M.
Zeilik, The Evolving Universe, (Wiley)
- M.
Seeds, Foundations of Astronomy, (Wadsworth)
- G.
Abell, D. Morrison & S. Wolff, Exploration of the
Universe, (Saunders)
Those
students having difficulties should consult the lecturer
for help. Further information on student support services
may be found on the School website here.
Detailed
Syllabus
Our
galaxy
- Magnitude
system in Astronomy
- Structure
of our Galaxy
- Stellar
populations
- Formation
of our Galaxy
- Interstellar
medium
- Gaseous
nebulae
- Extinction
- Optical
depth
- Stromgren
radius
- Synchrotron
radiation
- Thermal
bremsstrahlung
- 21cm
HI spin-flip transition
- Galactic
dynamics
- Stellar
motions
- Differential
rotation
- Oort's
constants
- Rotation
curve of our Galaxy
Other
galaxies
- Observational
evidence for dark matter
- Dark
matter candidates
- Searches
for dark matter
- Hubble's
galaxy classification
- Different
galaxy types
- Density
waves and star formation
Active
Galactic Nucleii
- Seyferts,
quasars, BL Lacs, radio galaxies
- AGN
radiation mechansims
- AGN
spectral shape
- Broad
and narrow emission line regions
- AGN
standard model
- Quasars
- discovery
- Number
density
- Optical
spectrum
- Emission
properties
- Absorption
systems
- Damped
Lyman alpha systems
- Lyman
alpha forest
- Gunn-Peterson
effect
- Proximity
effect
Distance
Scale
- Discovery
of the expansion
- Hubble's
constant and age of universe
- Distances
to other galaxies/distance scale
- Standard
candles
- Eight
methods for determining distances:
- Cepheid
variables; globular clusters; novae; supernovae; Tully-Fisher
relationship; planetary nebulae; Dn-sigma for elliptical
galaxies; surface-brightness fluctuations for elliptical
galaxies.
Black
Holes
- Schwarschild
radius and event horizon
- Gravitational
redshift of photons
- The
centre of our Galaxy
- Black
hole evaporation - Hawking radiation
Cosmology
- Evidence
for the big bang
- Interpreting
the expansion
- Olber's
paradox
- Cosmological
principle
- Critical
density
- Cosmic
microwave background radiation
- Light
element abundances/big bang nucleosynthesis
- Inflation
- Gravitational
lensing
- Hubble
deep field
Further
Information
For
more information about PHYS2160 contact:
last updated 1st February 2011