next up previous
Next: Astronomy databases Up: Spectroscopic data Previous: Spectroscopic data reduction

Spectroscopic data analysis

Line positions: velocities. Note cross correlation techniques.

Line widths: rotation and velocity dispersion. Note various techniques (Fourier).

Line strengths: measure flux in line (usually emission lines).

Equivalent widths: gives strength of line (absorption or emission) relative to strength of continuum.



Rene Walterbos 2003-04-14