Exploring Spectral Analysis and Modern Stellar Spectra

observational techniques meeting 8 n.w
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Explore the world of observational techniques in astronomy with a focus on spectroscopy, redshift, and modern stellar spectra. Dive into topics such as cosmic microwave background, CMB developments, neutrino detectors, gravitational wave detectors, and more. Unveil the mysteries of redshift, plate spectra, and the different types of modern stellar spectra from O/B stars to A stars. Understand the significance of spectral analysis in determining redshift, distance, composition, and velocity in the cosmos.

  • Astronomy
  • Spectral Analysis
  • Stellar Spectra
  • Observational Techniques
  • Redshift

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Presentation Transcript


  1. Observational techniques meeting #8

  2. Topics for student talks: Cosmic microwave background: history + basic instrumentation CMB: recent developments MM/SubMM instrumentation: SCUBA -> ALMA Sunyaev-Zeldovich effect; detection; implications Light echoes IFU spectrographs Polarization Neutrino detectors TEV telescopes Cosmic-ray observatories Gravitational wave detectors LIGO Future GW observatories - LISA MIR/FIR instrumentation X-ray astronomy (basic) Advanced X-ray (Nustar) X-ray polarimetry JWST: the next generation space telescope Astrometry and GAIA Next generation cosmology missions: Euclid and WFIRST Future radio arrays: LOFAR, SKA UV Robotics

  3. Spectroscopy

  4. Spectral analysis provides: Redshift/distance Composition Velocity/dynamics

  5. Redshift

  6. z=0 - Stars

  7. Plate spectra

  8. Modern stellar spectra: O star He II

  9. Modern stellar spectra: O/B He II He I

  10. Modern stellar spectra: B Black body break He II He I

  11. Modern stellar spectra: A Black body break He II He I

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

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

  14. Modern stellar spectra: G Black body break Na D G band Mg I Ca IR triplet Ca H+K

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

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

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

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

  19. Modern stellar spectra: White dwarf stars DA

  20. Modern stellar spectra: White dwarf stars DB

  21. Modern stellar spectra: White dwarf stars DB

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

  23. End

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