Stellar Structure and Evolution

course ID





14 Weeks

Semester DD


Course details

1. Stellar Structures: empirical scenario

1.1 Galactic spheroid

1.2 Stellar Populations

1.3 Stellar systems

1.4 Metallicity distributions

1.5 Kinematic properties

2. Stellar Structures: theoretical framework

2.1 Momentum conservation

2.2 Mass conservation

2.3 Radiative and conductive transport equations

2.4 convective trasport equation: Schwarzschild and Ledoux criteria 2.5 Mixing length theory

2.6 Energy Conservation

2.7 Stellar envelopes and atmospheres

3. Physical conditions in stellar interiors

3.1 Equation of state

3.2 Radiative and molecular opacities

3.3 Energy generation

3.4 Nuclear reactions

4. Solutions of the equations for stellar interiors

4.1 Analytical solutions

4.2 Virial theorem and electron degeneracy

4.3 Initial conditions and boundary conditions

4.4 Saha equation and evolution of chemical elements

5. Star formation

5.1 Jeans mass and star formation

5.2 Strutture stellari completamente convettive: Hayashi track

5.3 Approch to the central hydrogen burning phase

6. Hydrogen burning phases

6.1 The p-p chain

6.2 The bi-cycle CN-NO

6.3 The Main Sequence (MS) in low-, intermediate- and massive stars

6.4 Standard solar model

6.5 The Mass-Luminosity relation

6.6 The Schoӧnberg-Chandrasekhar limit

6.7 The sub giant branch and the red giant branch (RGB)

6.8 The RGB bump

6.9 The Tip of the RGB and the central Helium flash

7. Helium burning phases

7.1 Nuclear reactions

7.2 The Zero Age Horizonthal Branch (ZAHB)

7.3 Central Helium burning phase in low-, intermediate- and massive stars

8. Advansed evolutionary phases

8.1 Asymptotic giant Branch (AGB)

8.2 Chandrasekhar limit

8.3 Carbon/Oxygen and helium core white dwarfs

8.4 Advansed evolutionary phases in massive stars: Supernovae

9. Stellar observables of cosmological interest

9.1 Primordial helium content

9.2 Absolute and relative ages of globular clusters

9.3 The Cepheid instability strip

9.3 Primary and secondary distance indicators

9.4 The Hubble constant