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That isn't know with certainty. You can see a list in Wikipedia, if you search for "List of most luminous stars"; the article describes some of the caveats, for example, the distance to the stars are not always known with great precision. Also, this obviously only includes known stars, which are relatively close to us (mainly in our own galaxy).
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Does apparent magnitude refer to real luminosity?
No. Apparent magnitude (or luminosity) means how bright a star (or other object) looks to us; absolute magnitude (or luminosity) refers to how bright it really is.
What is the relationship between luminosity and absolute magnitude in stars?
The relationship between luminosity and absolute magnitude in stars is that luminosity measures the total amount of energy a star emits, while absolute magnitude measures the brightness of a star as seen from a standard distance. Stars with higher luminosity have lower absolute magnitudes, meaning they appear brighter in the sky.
What would be the absolute magnitude and color of a main sequence star with a luminosity of 100?
The absolute magnitude depends on the luminosity and distance, whereas the color depends on the temperature of the star. Without the distance information, we can't determine the absolute magnitude. For a main sequence star with a luminosity of 100 times that of the Sun, it would likely fall in the range of spectral classes O to F, appearing blue-white to white in color.
What star is brighter Betelgeuse or Rigel?
Betelgeuse has an apparent magnitude of 0.42(v) and an absolute magnitude of -6.02. Rigel has an apparent magnitude of 0.12 and an absolute magnitude of -7.04. So Rigel is brighter.
What is the absolute magnitude of cassiopeia?
Cassiopeia is a constellation, not a single star, so it does not have a specific absolute magnitude. The stars within the constellation Cassiopeia have a range of absolute magnitudes depending on their distance and luminosity.
Does apparent magnitude refer to real luminosity?
No. Apparent magnitude (or luminosity) means how bright a star (or other object) looks to us; absolute magnitude (or luminosity) refers to how bright it really is.
Explain why size is the only factor that determines the stars absolute magnitude?
The absolute magnitude is a measure of the star's luminosity hence the smaller the size the less the absolute magnitude.
What is the relationship between luminosity and absolute magnitude in stars?
The relationship between luminosity and absolute magnitude in stars is that luminosity measures the total amount of energy a star emits, while absolute magnitude measures the brightness of a star as seen from a standard distance. Stars with higher luminosity have lower absolute magnitudes, meaning they appear brighter in the sky.
What would be the absolute magnitude and color of a main sequence star with a luminosity of 100?
The absolute magnitude depends on the luminosity and distance, whereas the color depends on the temperature of the star. Without the distance information, we can't determine the absolute magnitude. For a main sequence star with a luminosity of 100 times that of the Sun, it would likely fall in the range of spectral classes O to F, appearing blue-white to white in color.
What is the absolute and apparent magnitude of a giant star?
Magnitudes require distance and luminosity. Therefore a specific star is required.
What star is brighter Betelgeuse or Rigel?
Betelgeuse has an apparent magnitude of 0.42(v) and an absolute magnitude of -6.02. Rigel has an apparent magnitude of 0.12 and an absolute magnitude of -7.04. So Rigel is brighter.
What is the absolute magnitude of cassiopeia?
Cassiopeia is a constellation, not a single star, so it does not have a specific absolute magnitude. The stars within the constellation Cassiopeia have a range of absolute magnitudes depending on their distance and luminosity.
What is the actual amount of light a star gives off called?
The actual amount of light a star gives off is called its luminosity. Luminosity is a measure of the total amount of energy emitted by a star per unit time, typically expressed in terms of the Sun's luminosity.
What is the relationship between luminosity and magnitude in stars?
The relationship between luminosity and magnitude in stars is that luminosity measures the total amount of light a star emits, while magnitude measures how bright a star appears from Earth. A star's luminosity is its actual brightness, while its magnitude is its apparent brightness as seen from Earth. The lower the magnitude, the brighter the star appears, and the higher the luminosity, the more light the star emits.
Which star has the greatest magnitude in Aquarius?
Beta Aquarii (Sadalsuud) has an apparent magnitude of 2.89 and an absolute magnitude of -4.5.
What is the magnitude of a star as it appears in the sky called?
The Polar star is the star that is magnitude. This is a Luminosity star.
What is the absolute magnitude of this star m equals 6?
The absolute magnitude of a star is a measure of its true brightness if it were placed at a standard distance of 10 parsecs from Earth. To calculate the absolute magnitude from the apparent magnitude (m) of 6, you would need to know the star's distance. Without this information, we cannot determine the absolute magnitude.
