an absolute magnitude of -3 is more luminous than an  absolute magnitude of-8.

Q: 8) Star A has an apparent magnitude of 2.5 and star B has an apparent magnitude of 3.9. Calculate…

A: When studying stars astronomers use two different magnitudes, apparent and absolute magnitude.…

Q: The magnitude of star A is 11 more than that of star B. How is their corresponding brightness…

A: Stars that can be seen by the naked eye, tend to be greater in diameter and shine more brightly than…

Q: Why are Earth-based parallax measurements limited to the nearest stars?

A: Parallax is one of the methods used by astronomers to estimate the distance to stars and other…

Q: If a star has a parallax angle of 0.768" and the width of your pinky is about 1 degree, what…

A: Parallax method is used to find the distances of distant objects. Parallax can be understood with…

Q: Hertzsprung-Russell Diagram Blue or blue w White Vellow Red orange Red Rioe Supergl Beteigeuse Main…

A: The region of main sequence contains large number of stars than any other region. Therefore most of…

Q: What is the most common type of star?

A: There are different types of stars in our universe. They are mainly categorized based on their mass,…

Q: One of the closest stars to the sun has a parallax of 0.5 arcseconds. What is the distance to this…

A: Closest star to the sun has: Parallex=0.5 arcsecond We define distance 'd' to a star is reciprocal…

Q: What is the temperature of a star emitting light with a peak wavelength of  7,080 angstroms?  T=…

A: Given : λmax = 7080 angstroms = 7080*10-10 m. From Wien's law the temperature of star is  T =…

Q: If a star has an apparent magnitude of 3.5 and an absolute magnitude of 5, how far away is it?

A:

Q: Calculate the distance of a star if the stellar spectrum indicates an absolute magnitude of -10.0,…

A: The expression for the distance can be written as m-M=5logd10…

Q: Why does the luminosity of a star depend on both its radius and its temperature?

A: Luminosity is the radiant power emitted by star. The luminosity is measured in Watt or Joules per…

Q: If a star's absolute magnitude value is significantly larger than its apparent magnitude value…

A: Absolute magnitude Mv: The magnitude that a star is expected to have if it were at a distance of 10…

Q: A star has an apparent magnitude of 10.0 and an absolute magnitude of 2.5. How far away is it?

A:

Q: What is the difference in magnitude for two stars is one appears four times brighter than the other?

A: one star  appears four times brighter than the other  It means the intensity of the total…

Q: is

A: The relationship between apparent visual magnitude(m), Absolute visual magnitude(Mv) and distance(d)…

Q: If a star has an apparent magnitude equal to its absolute magnitude, how far away is it in parsecs?

A: Given that :Apparent magnitudemp=Mv

Q: A certain star is 13.7 times dimmer than a star with apparent magnitude m = 3.9.  What is the…

A: We are given the ratio of brightness of stars. We are given the apparent magnitude of the brighter…

Q: What is the luminosity of a star having three times the radius of the Sun and a surface temperature…

A: The luminosity of a star is a measure of the total amount of energy that is radiated by a star per…

Q: Why do distant stars look redder than their spectral types suggest?

A: The pace is mostly empty but there are areas of large density of the interstellar medium.   It…

Q: The apparent magnitude of a star is (4.3) and the parallax angle is (0.161) arcseconds. The absolute…

A:

Q: You observe a star with an apparent magnitude mv=12 at a distance of 1 kiloparsec.  What is this…

A: The relation between apparent magnitude, absolute magnitude, and distance of star in parsec is given…

Q: A star with apparent magnitude 5 is brighter than a star with apparent magnitude 15 by how much? A…

A:

Q: Stars A, B, C, D, and E have apparent magnitudes of 7, 3, -1, 15, and 0, respectively.   1) Which…

A: Here, Apparent Magnitude of Star  A=7 B=3 C=-1 D=15 E=0

Q: Given star A with apparent visual magnitude mv = 6.5, and star B with mv = 4.4, what is the flux…

A: Given, star A with apparent visual magnitude mA = 6.5, and star B with mB = 4.4, the flux ratio…

Q: What is the color of the stars shown on the diagram that have the lowest surface temperature? O red…

A: Required: Color of the stars,

Q: Calculate the absolute magnitude of a star at a distance of 6 pc with an apparent magnitude of 3.

A: The apparent magnitude and absolute magnitude are two terms used to define the brightness of a star.…

Q: If light from one star is 1,600 times brighter (has 1,600 times more flux) than light from another…

A:

Q: A nearby star has a parallax of 0.317 arcseconds. How long does it take the light from this star to…

A:

Q: How do you calculate the mass of a star?

A: To calculate mass of a single star is a difficult process however to calculate the mass of binary…

Q: A star has an apparent magnitude of 6 and an absolute magnitude of 3. How far is the star from…

A: The distance of a star can be measured from its absolute and apparent magnitude.    The apparent…

Q: A star has a distance of 40 pc. What is the parallax of the star?

A: The distance of a star and its parallax are related as,   d=1/p, where, d= distance in parsecs, and…

Q: The main-sequence age of a star of 1M⊙ is about 1010 years. What is the main-sequence age of a star…

A: Answer the following question is

Q: A star has an apparent magnitude of 10 and an absolute magnitude of 2.5. How far is it?

A: