Is this a binary system?
Q: With a pair of binoculars, the faintest stars that you can see have an apparent magnitude of…
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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: In a binary star system, the average separation between the stars is 4.0 AU, and their orbital…
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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 star has a temperature T = 15000K, mass M = 0.25M⊙ and luminosity L = 0.02L⊙. Sketch the position…
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Q: Which spectral line does this likely correspond to?
A: we can use the doppler shift formula to find laboratory wavelength.
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: What are the approximate spectral type, temperature, absolute magnitude number, and luminosity of…
A: Required : Spectral type, absolute magnitude, temperature and luminosity of star E.
Q: The period–luminosity relation is useful in determining a. the mass of a star for which the…
A: Period-luminosity relation :- According to this…
Q: An astronomical image shows two objects that have the same apparent magnitude, i.e., the same…
A: Let the luminosity of the star is Ls= LoLuminosity of Milky Way galaxy, Lm=1011LoLuminosity of…
Q: Question A1 a) The Large Magellanic Cloud (LMC) is a galaxy in the vicinity of the Milky Way. It is…
A: Solution/Calculation: a) The Large Magellanic Cloud (LMC) is a galaxy in the vicinity of the Milky…
Q: Hertzsprung-Russell Diagram
A: In the sky, there are many groups of stars. Some of them are small. while some of them are large.…
Q: A white dwarf star has a visual luminosity of 0.046LSun. If you were 1 AU from the white dwarf, what…
A: Ldwarf = 0.046Lsun Distance d = 1 AU = 1.496×1011 m Lsun = 3.827×1026 W
Q: The apparent magnitude of a star is observed to vary between m = +0.4 and m = +0.1 because the star…
A: Given: The apparent magnitude of the star varies between m+ = 0.4 and m- = 0.1 The radius of the…
Q: What characterizes a star of spectral-type A in the visible part of the spectrum? Strong lines…
A: Spectral type A has wavelength ranging from 290-390 nm. They have very strong hydrogen lines.
Q: Let’s say you’re looking for extrasolar planets. You observe a star that has a spectral shift in the…
A: Write down the values using suitable variables. Here, c signifies the speed of light in a vacuum.
Q: An O8 V star has an apparent magnitude of +2. Use the method of spectroscopic parallax to estimate…
A: The apparent magnitude m of the star is given to be m=+1. From HR absolute magnitude M of a star…
Q: Suppose a star has a luminosity of 7.0x1026 watts and an apparent brightness of 4.0×10-12 watt/m?.…
A: Luminosity of star (L) = 7×1026 watt Apparent brightness (AB) = 4×10-12 Wm2
Q: This star has a mass of 3.3 MSun. what is the main sequence lifetime of this star? You may assume…
A: Given data: Mass of the star MStar=3.3 MSun. The life time of the main sequence star is given as,…
Q: . The spectrum of Star A peaks at 700 nm. The spectrum of Star B peaks at 470 nm. We know nothing…
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Q: a) What is a binary star system? (b) describe briefly two methods for showing that a system is a…
A: (a) A binary star system is a system of two stars orbiting each other around a common center. Binary…
Q: Consider the colour-magnitude diagrams for the three stellar clusters in the image below. Which of…
A: The given data is made using a B-V filter. It is a blue filter that only allows blue wavelength and…
Q: Explain how some stars form in binary systems.
A: There are number of ways stars can be formed in binary systems. They are discussed below.
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: Consider two stars on the main sequence, A and B. Star A has a mass of 9. Мо Star B has a mass of…
A: Solution attached in the photo
Q: Suppose the distance to a star is doubled. Then the luminosity of the star is O Remains the same,…
A: Luminosity and apparent brightness are 2 different things. Luminosity is unique property of body and…
Q: The luminosity class of a star tells an astronomer: O how long ago the star formed O whether the…
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Q: ou observe a star with a telescope over the course of a year. You find that this star has a flux…
A: .In vertical direction:psinθ=40sin60Psinθ=4032Psinθ=34.6410 free body diagram:
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: Absolute magnitude 7 -6 5 4 3 2 7 0 Based on the figure, M = 0.3 & Cephel- kpc Type (classical)…
A: Given, The pulsation period, P=16hrP=1624daysP=0.67days Angular distance,θ=20arc minθ=20×60206265arc…
Q: Which of the following is least reasonable regarding stars on a Hertzsprung-Russell diagram?…
A: The Hertzsprung-Russell (H-R) diagram is a scatter plot of stars showing the relationship between…
Q: You discover a binary star system in which one member is a 15 solar-mass main-sequence star and the…
A: Required : The correct option.
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 sketch below shows an H-R diagram for a star cluster. Consider the star to which the arrow…
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Q: The mass-luminosity relation describes the mathematical relationship between luminosity and mass for…
A: Given,mass =4M⊙ Note: We’ll answer the first question since the exact one wasn’t specified. Please…
Q: This star has a mass of 3.3 MSun. What is the main sequence lifetime of this star? You may assume…
A: The main sequence lifetime is given as:t α1M2.5it is given star has mass of 3.3 MSunSo,…
Q: Choose the statements that correctly describe the characteristics of the stars located in the…
A: Option-E is the correct option.
Q: A star with spectral type A0 has a surface temperature of 9600 K and a radius of 2.2 RSun. How many…
A: Given: Tstar = 9600 KRstar =2.2 RsunTsun=5778 KMstar = 3.3 Msun
Q: 14 Suppose you see two main-sequence stars of the same spectral type. Star 1 is dimmer in apparent…
A: We know apparent magnitude(m) is related Radiant flux (F): F2F1=100(m1-m2)/5And…
Q: The total intensity of light measured on earth, from an ecliptic binary, is plotted in the figure as…
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Q: The distance to a binary is 8x107 m and its apparent magnitude is +2. What is its absolute…
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Q: In a binary system, the maximum value of the radial velocity of one star with respect to the other…
A: Solution: Given Values, The maximum value of the radial velocity of one star with respect to the…
Q: does the H-R diagram show? Explain the main sequence of stars.
A: The H-R diagram is Hertzsprung- Russell Diagram, it is a graph in which absolute magnitude of stars…
You observe a star system for many weeks. The light curve does not show significant changes in brightness, but a series of spectra show a spectral feature that cyclically appears as one absorption line, then two, then one again, and so on. Is this a binary system?
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