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Why does a cool distant super giant star such as Betelgeuse have such a high apparent magnitude?
Despite its distance and size, Betelgeuse has a high apparent magnitude because of its immense luminosity. It is a massive and highly luminous red supergiant star, shining brightly due to its large surface area and energy output. This makes it appear bright in our sky despite being relatively far away.
Is Betelgeuse a quasar?
No, Betelgeuse is not a quasar. Betelgeuse is a red supergiant star located in the constellation of Orion, while a quasar is a highly energetic and distant active galactic nucleus powered by a supermassive black hole at the center of a galaxy.
If two stars have the same apparent magnitude are they the same distance from Earth?
No. Brighter distant stars can have the same apparent magnitude as fainter stars that are closer.(Absolute magnitude does not refer to actual brightness, but rather to what the brightness of a star would likely be at an arbitrary distance of 10 parsecs, rather than its actual distance.)
A star might be much brighter than it appears to be This is called the star's absolute magnitude The difference in apparent magnitude and absolute magnitude is due primarily to the star's?
distance from the Earth. The apparent magnitude of a star is how bright it appears from Earth, while the absolute magnitude is how bright a star would be if it were located at a standard distance of 10 parsecs away from Earth. The difference in magnitude is primarily influenced by the star's distance, with closer stars having a smaller difference and more distant stars having a larger difference between their apparent and absolute magnitude.
What is a star like object is very bright and distant?
If this is a homework question the answer you are probably looking for is Quasar [See related question] However, the actual question is full of inconsistencies. Brightness is defined as being observed from Earth and distance is relative to your frame of reference - Apparent magnitude [See related question - Apparent magnitude] Therefore, a bright object could be the Sun, and in normal relative terms it is distant, to some very distant. A quasar on the other hand is not very bright from Earth but it is very very distant. For the question to fit the answer, the question should be "What star like object is very luminous and very far away". or "What star like object has a high absolute magnitude and is very distant [See related question - Absolute magnitude]
Why does a cool distant super giant star such as Betelgeuse have such a high apparent magnitude?
Despite its distance and size, Betelgeuse has a high apparent magnitude because of its immense luminosity. It is a massive and highly luminous red supergiant star, shining brightly due to its large surface area and energy output. This makes it appear bright in our sky despite being relatively far away.
Is Betelgeuse a quasar?
No, Betelgeuse is not a quasar. Betelgeuse is a red supergiant star located in the constellation of Orion, while a quasar is a highly energetic and distant active galactic nucleus powered by a supermassive black hole at the center of a galaxy.
Red supergiant in the constellation scorpius?
Antares -- 604 light-years distant, magnitude 1.05, an "M" class star, cooler than our Sun.
If two stars have the same apparent magnitude are they the same distance from Earth?
No. Brighter distant stars can have the same apparent magnitude as fainter stars that are closer.(Absolute magnitude does not refer to actual brightness, but rather to what the brightness of a star would likely be at an arbitrary distance of 10 parsecs, rather than its actual distance.)
A star might be much brighter than it appears to be This is called the star's absolute magnitude The difference in apparent magnitude and absolute magnitude is due primarily to the star's?
distance from the Earth. The apparent magnitude of a star is how bright it appears from Earth, while the absolute magnitude is how bright a star would be if it were located at a standard distance of 10 parsecs away from Earth. The difference in magnitude is primarily influenced by the star's distance, with closer stars having a smaller difference and more distant stars having a larger difference between their apparent and absolute magnitude.
What is a star like object is very bright and distant?
If this is a homework question the answer you are probably looking for is Quasar [See related question] However, the actual question is full of inconsistencies. Brightness is defined as being observed from Earth and distance is relative to your frame of reference - Apparent magnitude [See related question - Apparent magnitude] Therefore, a bright object could be the Sun, and in normal relative terms it is distant, to some very distant. A quasar on the other hand is not very bright from Earth but it is very very distant. For the question to fit the answer, the question should be "What star like object is very luminous and very far away". or "What star like object has a high absolute magnitude and is very distant [See related question - Absolute magnitude]
Why does Arcturus star have greater absolute magnitude than the sun buy a much lower apparent magnitude?
The apparent magnitude is how bright the star appears to us, but stars are all at different distances so that a star that is really bright might look dim because it is very far away. So the absolute magnitude measures how bright the star would look if it was placed at a standard distance of 10 parsecs. When the absolute magnitude is greater than the apparent magnitude, it just means that it is closer than 10 pc. 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 is higher for closer stars?
If they had the same intrinsic brightness, then yes. However stars vary enormously in their intrisic brightness, so Deneb is distant, but one of the brightest stars in the Northern sky, whereas proxima centuri is the closest star to us, but so dim that it cannot be seen without a mid-size telescope.
Why does venus have an apparent magnitude greater than a star?
Although it does not emit its own light like a star, the planet Venus is very close to Earth compared to the stars. This means that the light reflected off its surface from the sun makes it brighter than the distant stars.
Why can two stars can have the same apparent magnitude and different total magnitudes?
Two different stars with different luminosity may appear to have the same brightness to an observer because the brighter may be more distant. This illustrates the need in astronomy to help range distant stars; since apparent magnitude alone will not yield enough information to gauge distance. The establishment of a "standard candle" or object of known brightness can be used for comparison; these can be established through various means including statistical models, observation of variable stars, behavior of nearby supernovae, etc. Once the distance of a star is known, the absolute magnitude can be derived from the apparent magnitude using the inverse-square law.
Why does rigel shine as brightly as betelgeuse even though rigel is much smaller than betelgeuse?
Rigel appears as bright as Betelgeuse because it is closer to Earth than Betelgeuse, even though Rigel is smaller and less luminous. The brightness of a star is determined by both its luminosity and distance from Earth, so a smaller, closer star can appear just as bright as a larger, more distant one.
