Astronomy Unit 5 Ch 17 Vocab Flashcard

Front

Unit of distance between the Sun and the star?

Back

Parsec

Front

Brightness of an object as seen from Earth

Back

Apparent Magnitude

Front

True brightness of an object compared to others at the same distance from Earth

Back

Absolute Magnitude

Front

Organizing stars into groups O, B, A, F, G, K, M from hottest to coolest, subdivided by numeric digits (0 hottest, 9 coolest).

Back

Spectral classes

Front

Brightness of a star depends on its temperature and size. A hotter star is brighter than a cooler one of the same size.

Back

Radius-luminosity-temperature relationship

Front

Key concept in stellar classification:

Back

H-R Diagram

Front

Giants

Back

Front

Dwarf

Back

Front

Stage where a star fuses hydrogen into helium, spending most of its life cycle.

Back

Main Sequence

Front

Multi-choice options: Radius-luminosity-temperature relationship, Dwarfs, Giants, Binary-star system

Back

Binary-star system