In more massive (main sequence) stars, there is more matter and the pressure in the core is more . ... This higher rate of energy generation helps balance the greater mass and the radius of these stars is more than those of low mass stars. The story is different in evolved stars like giant stars.
Do all stars have the same mass?
All stars of the same mass will have the same surface temperature , and the same size, and so will have the same luminosity and will be in the same place on an H-R diagram.
Why do stars have different masses?
A star is born as a main sequence star when the temperature of the star’s core becomes high enough to fuse hydrogen into helium. ... In general, bigger the mass of the dense core, the more massive the star that is born from it. This is simply because the star has more material to accrete from .
What affects the mass of a star?
In more massive stars the greater inward force of gravity produces higher temperatures and pressures, requiring a higher rate of energy production to support the star. ... In addition to higher temperatures at the surface, more massive stars are also larger, and both of these factors contribute to the overall luminosity.
Why are some stars bigger than other stars?
But for all other stars, their sizes are determined by that simple balance: the force from the outward radiation, at the surface, has to equal the inward pull of gravitation. Larger radiation forces means the star swells to larger sizes, with the largest stars of all swelling to billions of kilometers.
What are the 7 main types of stars?
There are seven main types of stars. In order of decreasing temperature, O, B, A, F, G, K, and M . This is known as the Morgan–Keenan (MK) system.
Do all protostars become stars?
Do all protostars become stars? ... No because not all stars have enough mass.
What are the high mass stars?
High mass stars (stars with masses greater than three times the mass of the Sun) are the largest, hottest and brightest Main Sequence stars and blue, blue-white or white in colour . ... High mass stars pass through a Red Supergiant stage before dying catastrophically in supernovae explosions.
What star has the highest density?
A neutron star’s mass is often about the same as that of the sun; a sugar-cube’s worth of neutron-star material has a mass of about 100 million tons, or about the same as the entire human population, according to the statement. This makes neutron stars the universe’s densest objects besides black holes.
Do high mass stars live longer than low mass stars?
The fuel is hydrogen atoms and the number of hydrogen atoms is greater in high mass stars than it is in lower mass stars. Thus, the higher the mass of the star, the longer its lifetime can be. ... Lower mass stars live longer than the sun. Higher mass stars live shorter than the sun.
How much mass do stars lose?
Massive stars lose about 5% to 25% of their mass during the main-sequence phase.
Do larger stars have more mass?
On the main sequence, star sizes and colors are directly related. Larger stars are hotter and more massive than smaller stars .
How much mass is required to make an actual star?
“Both theory and observations concur in defining a minimum protostellar mass for the ignition of the hydrogen fusion to be around 0.08 solar mass . (Jupiter and Saturn for comparison with this limit, are only 0.001 and 0.0003 solar masses).”
What is the largest star in the universe?
The largest known star in the universe is UY Scuti , a hypergiant with a radius around 1,700 times larger than the sun.
What is the biggest star?
The cosmos is full of objects that defy expectations. Although it’s difficult to pin down the exact traits of any given star, based on what we know, the largest star is UY Scuti , which is some 1,700 times as wide as the Sun.
What color is the hottest star?
White stars are hotter than red and yellow. Blue stars are the hottest stars of all.
