In a laboratory, the Balmer-beta spectral line of hydrogen has a wavelength of 486.1 nm. If the line appears in a star's spectrum at 485.8 nm, what is the star's radial velocity (in km/s)? (Enter the magnitude.)    km/s

Q: Use a diagram to explain what is meant by the parallax angle, p, for a star observed twice from…

A: Diagram for explaining parallax angle:        o   star                                      / \…

Q: Two stars are in a binary system. One is known to have a mass of 0.700 solar masses. If the system…

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Q: The Hα spectral line has a rest wavelength of 6562.8 ˚A (remember: 1 ˚A = 10−10 m). In star A, the…

A: Given: The wavelength of the Hα=6562.8 Ao. The wavelength of Hα spectral of star A is 6568.4 Ao. The…

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: Consider two identical stars, A and B. Star B is 10 times farther away than star A. What is the…

A: Two identical stars A and B are given which are at different distances.

Q: A star has a parallax angle of 0.0270 arcseconds and an apparent magnitude of 4.641. The distance to…

A: Write the equation relating Luminosity Lsn and Lst to the absolute magnitude Msn and Mst of sun and…

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: If a star is located at 62.5 pc and has an apparent magnitude of 6 what is it absolute magnitude?

A: The brightness of a star is determined by its composition and distance from the Earth. There are two…

Q: Two stars are in a binary system. One is known to have a mass of 0.700 solar masses. If the system…

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Q: Q8. Measured the parallax angle of the Sirius Yanmaniya star, see Figure, and found 0.377 arcsec.…

A: Given :  Parallax angle of Sirius Yamaniya star, p* =0.377 arcsec

Q: What is the surface temperature of a star that emits light with a wavelength of 400 nanometers?

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Q: If star B is a 5th magnitude star and star C is 9th magnitude, what is their brightness ratio? Light…

A: Apparent magnitude of the star m is the measure of brightness of star from earth. Brightness is also…

Q: A star has a parallax of 0.8 seconds of arc. What is the distance of the star?

A: Parallax can be defined as the change in the position of an object due to a change in the observer's…

Q: A football receiver running straight downfield at 5.10 m/s is 10.5 m in front of the quarterback…

A: Given,The speed, The between football, Angle, The total amount of time projectile spends in air,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: 3. The Sun has an apparent visual magnitude of my = -27 and is 150 × 106 km from the Earth. If the…

A: Given: Let us consider the given data, mV=-27 Distance, d=150×106 km 1 pc=3.09×1016 m To find:…

Q: Which star in the table below has the least surface temperature?   Star Name d (parsecs) Parallax…

A: Since, distance of the star in terms of Parallax is, d=1parallax (in arc-sec)parsecs Now from…

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

A: The absolute magnitude of a star is given by the formula, M=m-5 log10D10 where D is distance of the…

Q: Which of these is NOT used as a spiral tracer?   a. O stars   b. B stars   c. young open clusters…

A: Spiral tracers are objects that are commonly found in spiral arms and soare used to trace spiral…

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

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Q: The greatest parallax angle of any star outside our solar system as viewed from Earth is Group of…

A: 1)We know that the parallax angle for the distant star is smaller, and the parallax angle for the…

Q: Which of the following stars are bright and very cool

A: The Supergiants are cool stars, which are very large and really bright. they're located towards the…

Q: Star A has an apparent magnitude of –1.5 and is 12.6 light-years from Earth. Star B has an apparent…

A: Given: dA=12.6ly=3.863parsec, dB=15.6ly=4.783parsec, mvA=-1.5, mvB=0.4 The apparent magnitude of a…

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

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Q: The star Sirius has an apparent magnitude of -1.46 and appears 95-times brighter compared to the…

A: Part a: Magnitude in astronomy is defined as an index for the brightness of a star and is denoted by…

Q: Star A and Star B are a bound binary at a distance of 20 pc from the Earth. Their separation is 30…

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Q: Part D By how much? ΑΣΦ LM=-2 100000000 %3D LM=8 Submit Previous Answers Request Answer

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Q: If a star has a surface temperature of 9500K. What would be the frequency of the light given off at…

A: The problem can be solved using the Wien's displacement law. This  states that the black body…

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: 5) Let's use this expression to solve a problem. Star X and Star Y are intrinsically identical…

A: Given, star X is located 20 light-years from earth star Y is located 40 light-years  from earth…

Q: You see a blue star directly over Avalon's equator. It appears to be moving north at 5.0 arcseconds…

A: Given: The star moves north at 5.0 arcseconds per year. To determine: The distance of this star from…

Q: The surface temperatures and apparent magnitudes of stars in a hypothetical star cluster are…

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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 young recently formed planet has a surface temperature T = 2000 K and a radius of Rp Jupiter radii…

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Q: Compute the distance to the following stars using the luminosity-distan relationship: m-M=5 log (d)…

A: Apparant Magnitude (m) = 9.95Absolute Magnitude (M) = 0.75

Q: 10 15 20 25 Magnitude is an indication of the brightness of the object. Apparent magnitude is how…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: The light curve (apparent magnitude as a function of time) of the star d-Cephei is 3.5 8-Cephei…

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