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Astrophysics I (8025) Intro. Astrophysics I (4025) A Survey of Astrophysics

Astrophysics I (8025) Intro. Astrophysics I (4025) A Survey of Astrophysics ( excluding planetary). Stellar Brightnesses and Surface Temperatures. Blackbody Radiation. So hν max ≈ 2.82 kT or. Doing the same in wavelength units:. Stellar Sizes.

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Astrophysics I (8025) Intro. Astrophysics I (4025) A Survey of Astrophysics

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  1. Astrophysics I (8025) Intro. Astrophysics I (4025) A Survey of Astrophysics (excluding planetary)

  2. Stellar Brightnesses and Surface Temperatures Blackbody Radiation So hνmax ≈ 2.82 kT or Doing the same in wavelength units:

  3. Stellar Sizes

  4. Model of Altair, based on data from the Navy Prototype Optical Interferometer (Peterson et al. 2006, ApJ, 636, 1087)

  5. Stellar Masses β Cyg = “Albireo”

  6. Stellar Spectra

  7. ...no longer confined to anthropocentric visible wavelengths... 7

  8. Most Important Diagram #1: HR Diagram

  9. Empty Space is NOT Empty - The Interstellar Medium

  10. What do these mean??

  11. The Birth of Stars

  12. and their deaths.....

  13. The Milky Way Galaxy

  14. and others.....

  15. The Universe

  16. Active Galaxies

  17. Most Important Diagram #2: Hubble Diagram

  18. Baby Picture of the Universe

  19. Locating Information • NASA’s Astrophysics Data System (ADS): http://adswww.harvard.edu/ and particularly http://adsabs.harvard.edu/abstract_service.html • SIMBAD: http://simbad.harvard.edu/simbad/ and http://simbad.u-strasbg.fr/simbad/ (there are 2 sites) • NOTE: VIRTUALLY ALL ELECTRONIC CATALOGS TODAY SEARCH SIMBAD FOR RESOLVING STAR NAMES AND GETTING THEIR COORDINATES. If SIMBAD is down, you may be out of luck! 24

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