Physics 556
Stellar Astrophysics
Prof. James Buckley
Lecture 10
Relativistic Quantum Mechanics and
Quantum Statistics
Tuesday, April 2, 2013
Cold Stars as Polytropes
DEGENERATE STARS: WHITE DWARFS, INFERRING THEIR PROPERTIES
Cold-Star Modeling, Polytropic
Physics 556
Stellar Astrophysics
Prof. James Buckley
Lecture 8
Convection and the Lane Emden
Equations for Stellar Structure
Reading/Homework Assignment
Read sections 2.5 to 2.9 in Rose over spring break!
Stellar Structure
Equations of Stellar Structure
Physics 556
Stellar Astrophysics
Prof. James Buckley
Lecture 11
Chemical Potential and Ionization State
Tuesday, April 2, 2013
Chemical Potential
If to any homogeneous mass in a state of hydrostatic stress we suppose an innitesimal
quantity of any substan
Physics 556
Stellar Astrophysics
Prof. James Buckley
Lecture 7
Hydrostatic Equilibrium and Radiative
Transport
Reading/Homework Assignment
Read sections 2.1 to 2.4 in Rose
Stellar Structure
Equations of Stellar Structure
dP (r)
G M (r)
Hydrostatic Equili
Physics 556
Stellar Astrophysics
Prof. James Buckley
Lecture 1
Mapping the Universe
Physics 556 Course Outline
Stellar Structure and Evolution (and other topics in Astrophysics)
Crow 206, 11:30-1:00
Instructor: Professor James Buckley (no TA)
Ofce: Co
Physics 556
Stellar Astrophysics
Prof. James Buckley
Lecture 9
Energy Production and Scaling Laws
Tuesday, April 2, 2013
Equations of Stellar Structure
dP (r)
G M (r)
Hydrostatic Equilibrium :
= (r)
dr
r2
dM (r)
Mass Continuity :
= 4r2 (r)
dr
(r)
Eqn. of
Physics 556
Stellar Astrophysics
Prof. James Buckley
Lecture 5
Thursday, February 28, 2013
Thermodynamics
Thursday, February 28, 2013
Equation of State of Radiation
The momentum ux normal to a surface (momentum per unit area per unit
time) is the same as
Physics 556
Stellar Astrophysics
Prof. James Buckley
Lecture 3
Thermal Radiation and Radiative Transfer
Specic Intensity
We assume that light travels in rays. No energy is transported along a single
ray (or line) so we consider an eective ray (or bundle o
Physics 556
Stellar Astrophysics
Prof. James Buckley
Lecture 4 (v2.0)
Radiation Emission, Absorption and
Scattering
Reading/Homework Assignment
The following lecture continues to follow Radiative Processes in Astrophysics
by Rybicki and Lightman Chapters
Physics 556
Stellar Astrophysics
Prof. James Buckley
Lecture 6
Thermodynamics and Stellar Structure
(with new and improved Thermo
discussion!)
Reading/Homework Assignment
Read sections 2.1 to 2.4 in Rose
Equations of Stellar Structure
dP (r)
G M (r)
Hydr
Physics 556
Stellar Astrophysics
Prof. James Buckley
Lecture 2
Radiation
Reading/Homework Assignment
Read chapter 1 or Rybicki and Lightman.
Radiation
Radiation
A quick review of some E&M and thermodynamics
Maxwells equations (in MKS units):
$%&'$"&!&$