Astronomy: Chapter 23 Review

Any star whose luminosity change in a predictable periodic way

• Pulsating Variable Star

• Dark Halo

• Galactic Disk

• Galaxy

Gravitationally bound collection of a large number of stars

• Galaxy

• Galactic Disk

• Dark Halo

• Variable Stars

Plot of the speed of disk material in a galaxy vs. its distance from the galactic center

• Rotation Curve

• H-R Diagram

• Blackbody diagram

• Galactic map

Tags

NGSS.HS-PS2-4

Star whose luminosity changes with a period of 1 to 100 days.

• Cepheid Variable

• RR Lyrae Variable

• Pulsating Variable Star

• Bipolar Star

Star whose luminosity changes with a period of 0.5 to 1 days.

• Cepheid Variable

• RR Lyrae Variable

• Pulsating Variable Star

• Bipolar Star

Region of the Galaxy beyond the visible halo

• Galactic Bulge

• Galactic Halo

• Dark Halo

• Galactic Disk

• Galactic Center

Part of the galaxy off the galactic plane where old Globular Clusters are found.

• Galactic Bulge

• Galactic Halo

• Dark Halo

• Galactic Disk

• Galactic Center

The location of a supermassive black hole.

• Galactic Bulge

• Galactic Halo

• Dark Halo

• Galactic Disk

• Galactic Center

Flattened region of gas and dust that bisects the galactic halo in a galaxy.

• Galactic Bulge

• Galactic Halo

• Dark Halo

• Galactic Disk

• Galactic Center

Thick distribution of warm gas and stars around the galactic nucleus

• Galactic Bulge

• Galactic Halo

• Dark Halo

• Galactic Disk

• Galactic Center