The red supergiant star Betelgeuse has an absolute magnitude of -5.85. If the Sun has an absolute magnitude of +4.8 and a luminosity is 4.23 x 1028 W, estimate the luminosity of Betelgeuse in Watts.
Q: Many of the bright stars in the night sky are highly luminous normal blue stars (such as Acrux), and…
A:
Q: A red giant star might have radius = 104 times the solar radius, and luminosity = 1730 times solar…
A: This problem can be solved using Stefan-Boltzmann law of Black body radiation.
Q: Hertzsprung-Russell Diagram Blue or blue white White Yellow Red orange Red Superglants beleignne…
A: In this problem, it is asking about the brightest star.
Q: Hertzsprung-Russell Diagram Blue or blue White Vellow Red-orange Red Rigel Beteignuse Aldebaran…
A: As it can be seen from Hertzsprung-Russell diagram that the y axis represents brightness which…
Q: What star is a white dwarf that is much more dim and hotter than the sun. and which type of stars…
A: 1.carbon-oxygen white dwarfs 2. hydrogen- fusing white dwarfs 3. Sirius B 4. Procyon B 5. Stein 2051…
Q: A newly discovered bright star has a luminosity of 78.4×1026 w. What is its temperature if it has a…
A: Luminosity is an absolute measure of radiant power, that is, its value is independent of an…
Q: Determine the mean molecular mass of a star for both the scenario of being completely neutral and…
A:
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: A star is observed with a surface temperature of 3,000 K and a luminosity of 100,000 solar…
A: Given , Temperature = 3000 K Solar Luminosity = 100,000 Now , mass and luminosity are related by…
Q: A newly discovered bright star has a luminosity of 78.4×1026 W. What is its temperature if it has a…
A:
Q: If a neutron star has a radius of 9.12 km and a temperature of 3.63 x 106 K, how luminous is it in…
A: 1)Using stefan's lawP = σ A T4Where P is the power σ is the stefan's constant A is the area of…
Q: Calculate the luminosity of an 8 solar mass star.
A: The luminosity of a star is the amount of energy that it radiates per second. It can be considered…
Q: 13) Calculate the luminosity in watts from the absolute magnitude for the given stars: (a) Vega (M =…
A: The energy radiated per unit of time by an astronomical object is called luminosity. The…
Q: If parallax of a star is 0.22 arc-seconds and its apparent brightness is 50 x 10-6 W/m2 . What is…
A: Given: Apparent Brightness,b=50×10-6W/m2Parallax of star,p=0.22arc-secondsDistance to the…
Q: Star A has an effective temperature of TA = 7200 K and a radius of RA = 2.04R , asecond star, Star…
A: Let LA be defined as the luminosity of star A and LB be defined as the luminosity of star B. The…
Q: V B r 10.401 10.894 12.303 9.459 9.656 9.477 11.635 12.744 11.229 i 9.705 9.661 10.837 Parallax…
A: Given as,
Q: A star is observed to be thrice the size of the Sun with temperature of 1.3Tsun. Estimate its…
A: The energy radiated by a star is defined as its luminosity. Luminosity depends on the temperature…
Q: Find the wavelength of peak intensity for a hot 45000 K star that emits thermal radiation.
A: Given in question that Temperature of the object(T) = 45000 K.
Q: Observations show that stellar luminosity, L, and mass, M, are related by Lx M3.5 for main sequence…
A:
Q: Consider two stars: one being a red giant with a spectral type K0 and one being a supergiant with a…
A: The intrinsic luminosity of a star is given by Stefan-Boltzmann's law as L=σAT4σ is the…
Q: Describe the relationship between the concept of hydrostatic equilibrium and the interior structure…
A: On each and every star in the astrophysics, there are always two forces acting. The first force is…
Q: Using the proportionality relationships for stellar luminosity as a function of mass and stellar…
A: Stellar lifetime is directly proportional to Stellar mass. Stellar luminosity is inversely…
Q: V603 Aquilae was a nova outburst that occurred on June 8, 1918, at which time it attained a peak…
A: Given information: The apparent magnitude of the (m) = -0.5 The apparent angular diameter of shell…
Q: Mention a method to measure temperature of a star.
A: Temperature of the stars cannot be measured directly as they are very far.
Q: White dwarfs have a temperature of 100×103 K. Calculate the maximum wavelength of a White dwarf.
A: A white dwarf is a stellar core remnant that is highly dense and made of electron-degenerate matter.…
Q: If the surface Temperature of a star was about 11000.0 K instead of 7000.0 K what is the ratio of…
A: Given , temperature of the star is 11000 K instead of 7000 K How many times greater is the magnitude…
Q: Star 1 and star 2 have the same V-magnitude, V = 7.5. However, they have different B-magnitudes, B1…
A: Given data : Star 1 and star 2 V-magnitude, V = 7.5 B-magnitudes, B1 = 7.2 and B2 = 8.5 d2 = 10d1 To…
Q: If a star has a parallax of 2 x 10 degree, how far away is it? O 7 pc O 14 pc O 28 pc O 5x 104 LY
A: Given, parallax angle θ=2 x 10-5 degree θ=2 x 10-5 x 3600…
Q: A newly discovered bright star has a luminosity of 78.4×1026 W. What is its temperature if it has a…
A:
Q: .
A:
Q: Many of the bright stars in the night sky are highly luminous normal blue stars (such as Acrux), and…
A: Given: The distance between the bright star and the earth is r = 620 light years The luminosity of…
Q: In a laboratory, the Balmer-beta spectral line of hydrogen has a wavelength of 486.1 nm. If the line…
A: vr=cλ0-λλ0
Q: If a T Tauri star is the same temperature as the sun but is ten times more luminous, what is its…
A: The energy radiated by a star per second is known as its luminosity and is directly proportional to…
Q: In a laboratory, the Balmer-beta spectral line of hydrogen has a wavelength of 486.1 nm . If the…
A: Wavelength of (λ°) = 481.6 nm Difference of wavelength ∆ λ = λ- λ° = 486.1- 485.8 = 0.3 nm Speed of…
Q: The star G1710 is currently at a distance of 62 lightyears and has an apparent visual magnitude of…
A:
Q: Calculate the size of a star if its surface temperature is 6000 K and has a power output of 5.6 x…
A: An ideal body capable of absorbing all the radiation that falls on it is considered a blackbody. The…
Q: What is the lifetime on the main sequence of a star whose surface temperature is 6500° K and whose…
A: Denote Stefan’s constant by σ. Evaluate the star’s luminosity (L) from its given temperature (T) and…
Q: A star has a luminosity (power output) of 9.2x1026 W and a diameter of 6.1x108 m. What is its…
A:
Q: The flux received at the Earth from Supernova 1885 was 3.0182 x 10 10 W/m?. The luminosity of the…
A: flux (I) = 3.0182×10-10 Wm2luminosity = 6×109 solar luminosities
Q: Choose the statements that correctly describe the characteristics of the stars located in the…
A: Option-E is the correct option.
Q: Sirius is the brightest star in the sky (but is located in the Southern hemisphere). It has a…
A:
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
