- Docente: Maria Grazia Giorgini
- Credits: 3
- SSD: CHIM/02
- Language: Italian
- Teaching Mode: Traditional lectures
- Campus: Bologna
- Corso: First cycle degree programme (L) in Astronomy (cod. 0095)
Learning outcomes
To provide the basic elements of atomic and molecular spectroscopy for the interpretation of the spectral lines most commonly used in astronomical investigations and for the comprehension of the information that can be extracted.
Course contents
Microscopic processes, radiative and collisional rates. Radiative trasfer: column density in thick and thin interstella clouds. Spectral line profiles: Dopple rline broadening, pressure broadening . Energy levels in many-electron atoms and ions. Electronic, vibrational, rotational energy levels in simple molecules. Matter-radiation interaction: absorption and emission of radiation; the Fermi's golden rule. Spectroscopic transitions in atoms and molecules; forbidden transitions and competition with collisional processes. Stellar spectra: lines of atoms i ( H, He,N, Ca I in binary stars) and ions ; molecular lines ( C2). Spectra of ISM: auroral and nebular lines (OIII,NII); molecular spectra (CO,OH); Cosmic Masers (OH): frequencies and pumping mechanisms in red giants.
Readings/Bibliography
Lecture notes
Astronomical Spectroscopy
J. Tennyson, Imperial College Press, Vol. 2, London
2004
Teaching methods
Lectures
Assessment methods
Oral exam
Teaching tools
Slide projector
Black board
Office hours
See the website of Maria Grazia Giorgini