# What are the stars on the HR diagram classified as?

## What are the stars on the HR diagram classified as?

Most of the stars on the HR Diagram are classified as which type of star? Main Sequence – middle life 17. What type of star has a high temperature but a low luminosity?

### Where can most stars be found in the HR diagram?

main sequence
Most stars are in the main sequence, which roughly runs from the top left to the bottom right of the H-R diagram.

What are the 7 categories of star class?

There are seven main types of stars. In order of decreasing temperature, O, B, A, F, G, K, and M.

What 4 groups of stars can be located on the HR diagram?

The four main groups of stars are clearly identified:

• Main Sequence: most stars, like our Sun; this is the area on the H-R diagram where most stars will spend their stellar lives.
• Supergiants: cool stars which are very large and very bright.
• Giants: cool stars which are a little smaller and dimmer than the Supergiants.

## How do you classify stars?

Astronomers classify stars according to their physical characteristics. Characteristics used to classify stars include color, temperature, size, composition, and brightness. Stars vary in their chemical composition.

### What are the three main groups of stars identified in the HR diagram?

There are 3 main regions (or evolutionary stages) of the HR diagram: The main sequence stretching from the upper left (hot, luminous stars) to the bottom right (cool, faint stars) dominates the HR diagram. red giant and supergiant stars (luminosity classes I through III) occupy the region above the main sequence.

How do you draw a star on an HR diagram?

Plot the luminosity on the y-axis with brighter stars going toward the top. Since brighter stars have lower magnitudes, if you choose to plot magnitude on the y-axis, the values will decrease as you go up! That’s OK – just remember that the luminosity of the star is increasing. Plot temperature on the x-axis.

What are the 3 main groups of stars?

The Different Types of Stars

• Protostar. A protostar is what comes before a star has formed – a collection of gas that collapsed from a huge molecular cloud.
• T Tauri Stars.
• Main Sequence Stars.
• Red Giant Stars.
• White Dwarf Stars.
• Red Dwarf Stars.
• Neutron Stars.
• Supergiant Stars.

## What are the three main characteristics used to classify stars?

Key Concept: Characteristics used to classify stars include color, temperature, size, composition, and brightness.