Physics 202: Introduction to Astronomy – Lecture 15 Carsten Denker Physics Department Center for Solar–Terrestrial Research.

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Presentation transcript:

Physics 202: Introduction to Astronomy – Lecture 15 Carsten Denker Physics Department Center for Solar–Terrestrial Research

March 31, 2006Center for Solar-Terrestrial Research  Spectroscopic parallax  Luminosity classes  Stellar Masses  Binary-star systems  Visual binaries  Eclipsing binaries  Spectroscopic binaries  Star clusters Open clusters Associations Globular clusters H-R Diagram and Star Clusters  Stellar sizes Direct measurements Luminosity- temperature-radius relationship  Giants and dwarfs  Hertzsprung-Russell diagram  Main-sequence  Distance scale

March 31, 2006Center for Solar-Terrestrial Research Stellar Sizes

March 31, 2006Center for Solar-Terrestrial Research Cosmic Distance Scale

March 31, 2006Center for Solar-Terrestrial Research Stellar Masses

March 31, 2006Center for Solar-Terrestrial Research Hertzsprung-Russell Diagram Nearby stars

March 31, 2006Center for Solar-Terrestrial Research Brightest starsHipparcos catalogue

March 31, 2006Center for Solar-Terrestrial Research

March 31, 2006Center for Solar-Terrestrial Research Star Clusters