Table of Contents
- 1 What type of star has the highest mean density?
- 2 What is the density of an average star?
- 3 Which of these is the closest to its density of stars?
- 4 Are black holes dense?
- 5 Which property of star is compared in H-R diagram?
- 6 What is the density of a star called?
- 7 Which locations within the Milky Way have the highest stellar density?
What type of star has the highest mean density?
Main-sequence stars seem to have densities similar to the sun. Stars that are much larger—the giants and supergiants—tend to be less dense than main-sequence. And white dwarfs, the smallest stars, are the most massive of all. The more or less constant density of all main-sequence stars makes sense.
What is the density of an average star?
Density = 10-7 g/cc.
What type of stars are the least dense?
White dwarfs have collapsed inward and so have the greatest density. main sequence are in the middle. giants and supergiants have the greatest spherical diameter and so have the lowest density.
Where are the most dense stars on the HR diagram?
Sample parameters
| Stellar class | Radius, R/ R ☉ | Luminosity, L/ L ☉ |
|---|---|---|
| A0 | 2.5 | 80 |
| A5 | 1.7 | 20 |
| F0 | 1.3 | 6 |
| F5 | 1.2 | 2.5 |
Which of these is the closest to its density of stars?
On October 3rd you will be asked, “…but in the entire universe, which of these is closest to its density of stars?”. The answer is Three watermelons in the Sun.
Are black holes dense?
A black hole is an extremely dense object in space from which no light can escape.
What is central density?
The central density, ρ0, of a stellar cluster is an important physical parameter for determining its evolutionary and dynamical state. If we use the lower, but more uncertain value a = 0.025 pc, the central density estimate becomes greater than 107 M⊙/pc3.
How does an H-R diagram make it clear that giant stars are larger than main sequence stars of the same temperature?
How does an H-R diagram make it clear that giant stars are larger than main-sequence stars of the same temperature? An H-R diagram shows main-sequence stars to be lower on the luminosity scale and the giant stars higher on the luminosity scale.
Which property of star is compared in H-R diagram?
1.1 Constructing the H-R diagram. Three properties which are suitable for comparing stars are temperature, luminosity and radius.
What is the density of a star called?
Stellar density. Stellar density is the average number of stars within a unit volume. It is similar to the stellar mass density, which is the total solar masses (MSun) found within a unit volume. Typically, the volume used by astronomers to describe the stellar density is a cubic parsec (pc3).
How do astronomers measure stellar density?
Typically, the volume used by astronomers to describe the stellar density is a cubic parsec (pc 3 ). In the solar neighborhood, this value can be determined from surveys of nearby stars, combined with estimates of the number of faint stars that may have been missed.
What is the stellar density of a globular cluster?
Stellar density. A typical mass density for a globular cluster is 70 MSun pc−3, which is 500 times the mass density near the Sun. In the solar neighborhood, the stellar density of a star cluster must be greater than 0.08 MSun pc−3 in order to avoid tidal disruption.
Which locations within the Milky Way have the highest stellar density?
The locations within the Milky Way that have the highest stellar density are the central core and the interior of globular clusters.