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Observational techniques meeting #9. Spectroscopy.

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Presentation on theme: "Observational techniques meeting #9. Spectroscopy."— Presentation transcript:

1 Observational techniques meeting #9

2 Spectroscopy

3 Spectral analysis provides: Redshift/distance Composition Velocity/dynamics

4 Redshift

5 z=0 - Stars

6 Plate spectra

7 Modern stellar spectra: O star He II

8 Modern stellar spectra: O/B He II He I

9 Modern stellar spectra: B He II He I Black body break

10 Modern stellar spectra: A He II He I Black body break

11 Modern stellar spectra: F Mg I Na D Black body break Ca H+K

12 Modern stellar spectra: F Mg I Na D Black body break Ca H+K G band

13 Modern stellar spectra: G Mg I Na DBlack body break Ca H+K G band Ca IR triplet

14 Modern stellar spectra: K Mg I Na D Black body break Ca H+K Mollecular bands Ca IR triplet

15 Modern stellar spectra: M Mg I Na D Mollecular bands Ca IR triplet

16 Modern stellar spectra: Brown dwarfs (L, T, Y) Mollecular bands

17 Modern stellar spectra: Carbon stars (C,S stars) Mg I Na D

18 Modern stellar spectra: White dwarf stars DA

19 Modern stellar spectra: White dwarf stars DB

20 Modern stellar spectra: Wolf-Rayet stars: WN/WC/WO

21 End

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