Press "Enter" to skip to content

What relationship does the Hertzsprung-Russell diagram show?

The Hertzsprung–Russell diagram, abbreviated as H–R diagram, HR diagram or HRD, is a scatter plot of stars showing the relationship between the stars’ absolute magnitudes or luminosities versus their stellar classifications or effective temperatures.

What is the difference between a star cluster and a galaxy?

Star clusters: Star clusters are groups of stars, from a few dozen to a few million, that are loosely held together by gravity. Galaxies: Galaxies are huge collections of solar systems and star clusters, often containing billions of stars. Galaxies are held together by gravity….

Where are open clusters located in our galaxy?

Open clusters are found in the disk of the Galaxy, and therefore lie largely in the plane of the Milky Way. Many of the closer ones, including those presented here, are easily visible to the naked eye (Messier 35 a fainter exception).

What eventually happens to open clusters?

What eventually happens to open clusters? They disperse to form field stars.

Can open clusters be old?

Open clusters generally survive for a few hundred million years, with the most massive ones surviving for a few billion years. In contrast, the more massive globular clusters of stars exert a stronger gravitational attraction on their members, and can survive for longer.

Is the sun in an open cluster?

No the sun is not part of a cluster. There are several types of clusters that we see in the sky. The most familiar is the “open cluster”, like the Pleiades. These are a group of stars that formed together and have remained close….

Which characteristics are typical of open star clusters?


Characteristic: Open Clusters: Globular Clusters:
Shape: Irregular Spherical
Color (Common): Red or Blue Red
Metallicity: High Low
Location: Disk of Galaxy Halo of Galaxy

What do they call the blue stars found in old globular clusters?

Which star lives the longest, the star with the higher mass or the star with the lower mass? What do they call the blue stars found in old globular clusters? blue stragglers. Where does Joshua Barnes think they come from?