Astr 323 January 22, 2004: Galaxy Brightness and Spectrum  

Surface Brightness Galaxies

M101

Malin 1

NGC 6614

Galaxy Spectra

Optical Spectra

Elliptical Galaxy Spectrum

Question: What will the spectrum of a spiral look like?

UV to near IR spectra

Problem: ZAMS

"backwarming"

spectra

spectra, continued

Late type giant and dwarf spectra

More dwarf and giant spectra

More dwarf and giant spectra, continued

Blanketing vector

Cepheid variables and the distance scale

Cepheid instability strip