Question

Диапазон звездных масс радиусов и плотностей.​

Answer 1

Ответ:

Ориентировочно от ~7 км (нейтронные звезды) до нескольких миллиардов км (красные сверхгиганты).

Массы от ~0.1 (четкой границы между звездами и планетами нет) до ~100 масс Солнца (масса Солнца ≈ 1.99*10^30 кг).

Объяснение:

Answer 2

Stellar Mass Range, Radii, and Densities

Stellar mass, radii, and densities vary significantly across different types of stars. Here's a brief overview based on the available information:

Stellar Mass Range: - The mass of stars can vary from a fraction of the Sun's mass to several times the Sun's mass. This range encompasses different classes of stars, including brown dwarfs, red dwarfs, main-sequence stars, and massive stars. - Brown dwarfs typically have masses between 13 and 80 Jupiter masses, while red dwarfs have masses less than half that of the Sun. - Main-sequence stars, like the Sun, have masses ranging from about 0.08 to 150 solar masses, with the most common being around 0.5 to 1.5 solar masses. - Massive stars, also known as high-mass stars, have masses greater than about 8 solar masses.

Stellar Radii: - The radii of stars also vary widely. For example, red dwarfs can have radii as small as 0.12 times that of the Sun, while massive stars can have radii tens to hundreds of times larger than the Sun's radius.

Stellar Densities: - Stellar densities are influenced by both mass and radius. Generally, more massive stars tend to have higher densities, while larger radii lead to lower densities. - For instance, white dwarfs, which are extremely dense remnants of low to medium mass stars, can have densities on the order of 1,000,000 times that of water. - On the other hand, red giants, which are large, low-density stars in the late stages of their evolution, have much lower average densities due to their expanded outer layers.

It's important to note that these values are approximate and can vary based on the specific characteristics of individual stars within each class.