0
What type of stars have a very low temperature and a very high absolute magnitudes?
The red giants are very bright and have a relatively low temperature, but they are still red hot, that's why they glow red and not white. Have a look at Betelgeuse or Aldebaran in binoculars, or Antares if you get a chance in the summer, and compare them with a white star like Rigel or Vega.
What else can I help you with?
What type of stars have high absolute magnitude but low temperatures?
Red giants.
What kind of star has an absolute magnitude of 10 and a surface temperature of 20000 K?
This star would be a white dwarf, as it has a high surface temperature of 20000 K but a low absolute magnitude of 10. White dwarfs are small, dense remnants of low to medium mass stars that have exhausted their nuclear fuel and collapsed.
What is a large star of high luminosity?
A good example of a medium size star is the Sun, which is very average. Luminosity is measured by the star's absolute magnitude, which is the magnitude seen from a standard distance of ten parsecs (32.6 light-years), and the Sun's absolute magnitude is +4.7. A factor of 100 increase in luminosity corresponds to 5 magnitudes less (larger magnitudes mean dimmer stars). The brightest stars have absolute magnitudes around -7.
Which stars always have large positive absolute magnitude?
Does it mean that the star is a main sequesnce star? ( . Y . ) The above isn't true. A star can be a blue supergiant and be on the main sequence but still not be even visible to us, therefore the apparent and absolute magnitude wouldn't be the same. But to answer your question, I don't think it has a name, it just means that you are seeing the star's absolute and apparent magnitude at the same time, so if you placed the star at 32.6 light years away(the absolute magnitude scale)then the star would not appear to change in brightness
What type of star has a high temperature and low luminosity in the HR diagram?
A blue dwarf star would have high temperature and low luminosity in the Hertzsprung-Russell (HR) diagram. Blue dwarf stars are in the lower left corner of the diagram, characterized by their high surface temperature and faint luminosity compared to other stars of similar temperature.
What type of star has high absolute magnitudes and high temperatures?
supergiant
Which one tells us how bright the stars would appear if all stars were at the same distance ferom the earth?
There are two terms used to describe a stars brightness, absolute magnitude and apparent magnitude. The one you want is absolute magnitude - this is where the stars distance from us is taken out of the equation, effectively comparing the stars brightness side by side from a set distance (10 parsecs or 32.6 light years). Apparent magnitude is the other measure, this is how bright a star apparently looks from Earth. The huge distances and range of distances involved means that you can have very bright stars (high absolute magnitude) that apparently look as bright as a much closer but dimmer (low absolute magnitude) star - their apparent magnitudes might be similar, but they may have vastly different absolute magnitudes.
Which are more common low or high temperature stars?
Low-temperature stars, such as red dwarfs, are more common in the universe than high-temperature stars. They constitute the majority of stars in our galaxy, primarily due to their long lifespans and the fact that they form more frequently. High-temperature stars, like O and B types, are relatively rare and have shorter lifespans, which contributes to their lower abundance. Overall, the prevalence of low-temperature stars significantly outweighs that of high-temperature stars.
What type of stars have high absolute magnitude but low temperatures?
Red giants.
What kind of star has an absolute magnitude of 10 and a surface temperature of 20000 K?
This star would be a white dwarf, as it has a high surface temperature of 20000 K but a low absolute magnitude of 10. White dwarfs are small, dense remnants of low to medium mass stars that have exhausted their nuclear fuel and collapsed.
What is a large star of high luminosity?
A good example of a medium size star is the Sun, which is very average. Luminosity is measured by the star's absolute magnitude, which is the magnitude seen from a standard distance of ten parsecs (32.6 light-years), and the Sun's absolute magnitude is +4.7. A factor of 100 increase in luminosity corresponds to 5 magnitudes less (larger magnitudes mean dimmer stars). The brightest stars have absolute magnitudes around -7.
What is the largest star in the hr diagram?
For a long times, it was considered to be VY Canis Majoris, but new studies have reduced its size. The present record is held by UY Scuti at 1708 times the diameter of the Sun. That works out to about 2,250,000,000km.
What actually causes the fusion to occur in stars?
The cause is the very high temperature.
Which stars always have large positive absolute magnitude?
Does it mean that the star is a main sequesnce star? ( . Y . ) The above isn't true. A star can be a blue supergiant and be on the main sequence but still not be even visible to us, therefore the apparent and absolute magnitude wouldn't be the same. But to answer your question, I don't think it has a name, it just means that you are seeing the star's absolute and apparent magnitude at the same time, so if you placed the star at 32.6 light years away(the absolute magnitude scale)then the star would not appear to change in brightness
What type of star has a high temperature and low luminosity in the HR diagram?
A blue dwarf star would have high temperature and low luminosity in the Hertzsprung-Russell (HR) diagram. Blue dwarf stars are in the lower left corner of the diagram, characterized by their high surface temperature and faint luminosity compared to other stars of similar temperature.
IS S Doradus going to exsplode?
Probably. It is an extremely bright star (a very high absolute magnitude), with a high mass, and such stars tend to end up as a supernova.
What is the classification for small and hot stars?
Small and hot stars are typically classified as white dwarfs. These stars are the end stage of evolution for stars with low to medium mass, such as the Sun, and are characterized by their high temperature and small size. White dwarfs are very dense and can appear white in color due to their high surface temperature.
