Ch 30-Stars, Galaxies, and the Universe Objectives – How astronomers determine the composition and temperature of stars – Why do stars appear to move in.
25.beyond our solar_system
Star Properties. Apparent Magnitude System of Hipparchus Group of brightest stars1 m Stars about ½ as bright as 1 m 2 m Stars about ½ as bright as 2 m.
1 ASTRONOMY 373 INTRODUCTION TO ASTRONOMY – Stars, Galaxies, & Universe Spring 2015 Sachiko Tsuruta.
This Set of Slides This set of slides covers finding distance in space, parallax review and limitations, some more physics (of light), the Inverse Square.
Transits What questions to ask? What are the observables? Constraints on precision? Model interpretation? Ground-based? Space-borne? All-sky vs. pointed.
Geocentric Model of the Universe – Ptolemy (et al.) 5 known planets (excluding Earth) Sun is beyond Venus (note that Venus and Mercury are closer to the.
Transits
The Hunt for Extrasolar Planets. Overview How do we find planets? What have we found? (diversity of planets) How are properties of planets determined?
Understanding the Stars
Announcements Next section will be about the properties of stars and how we determine them. The spectral lab will be on Jan 25th in class. Don’t miss.
