Across
- 3. apparent positional shift of an object caused by the motion of the observer
- 6. brightness an object would have if it were placed at a distance of 10 pc; classification system for stellar brightness that can be calculated when the actual distance to a star is known
- 7. graph that relates stellar characteristics--class, mass, temperature, magnitude, diameter, and luminosity
- 9. group of stars that forms a pattern in the sky that resembles an animal, mythological character, or everyday object
Down
- 1. one of two stars that are bound together by gravity and orbit a common center of mass
- 2. in an H-R diagram, the broad, diagonal band that includes about 90 percent of all stars and runs from hot, luminous stars in the upper-left corner to cool, dim stars in the lower-right corner
- 4. the distance equal to 3.26 ly or 3.086 x 10^13 km
- 5. classification system based on how bright a star appears to be; does not take distance into account so cannot indicate how bright a star actually is
- 8. energy output from the surface of a star per second; measured in watts