What star has the largest stellar parallax as measured from opposite ends of the Earth's orbit about the Sun? Group of answer choices Sirius The Sun Barnard's star Proxima Centauri Alpha Centauri
Q: Based on your radial velocity curve, record the orbital period P in days. This is the time elapsed…
A: 1) The orbital period P is the time elapsed between two subsequent peaks or troughs on the curve.…
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: Absolute visual magnitude is a. the apparent magnitude of a star observed from Earth. b. the…
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Q: The surface of a star usually has the highest temperature O True O False
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Q: What is the approximate surface temperature of the sun? O 10,000 OC O 5,000 OC O 5,500 OC O 4,000 OC
A: Required : Average surface temperature of the Sun.
Q: On Earth, the parallax angle measured for the star Procyon is 0.29 arcseconds. If you were to…
A: Write the relation in distance and parallax angle. d=1p
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: 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: 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: How far away would the Sun need to be to be just visible to the naked eye (apparent magnitude =…
A: Solution: Given that apparent magnitude, m = 5.90 the absolute magnitude of the Sun, M = 4.83
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: 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: Favorite Star Polaris is 132 pc from Earth and has an apparent magnitude of 2.5. What is its…
A: When the brightness of a star is measured there are two ways, Apparent and absolute magnitudes.…
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: 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: 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?
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Q: What is the dependence of the intensities of stars on parallax? Hint: consider the inverse-square…
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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: 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: L = ( 0.0813 ) x (Rs) ^2 x 10-0.4m x Ls where L = luminosity of the desired star Rs = distance of…
A: Given: Luminosity of Sun, Ls=1.00 Distance of the Polaris' star,Rs=323 light years Apparent magniude…
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: Which type of star would be the largest? a. M b. O c. B d. K e. A
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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: Which of the following is least reasonable regarding the magnitude scale: Group of answer choices…
A: The magnitude scale in astronomy helps us to quantify the brightness and distance of celestial…
Q: Use the Luminosity Distance Formula. Find the distance to a star (L=2.2x1026 watts) whose apparent…
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- A star has a parallax angle of 0.0270 arcseconds and an apparent magnitude of 4.641. The distance to this star is 37.03 parsecs and the absolute magintude is 1.79. 18: What is the luminosity of this star? (HINT: The luminosity of the Sun is 3.85×1026 W.)Which of the following WOULD NOT characterizes the type(s) of star we would find at g, m, n, o, and p on the Hertzsprung-Russel Diagram (Figure 4) a. are all smaller than q,i,h. b. fuse hydrogen into helium. c. are called, “the main sequence”. d. fuse He into heavier elements. e. get smaller towards the right sideIn 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
- Stars A and B both have the same spectral class. Star A is 7 times farther away than star B. The brightness of star A will be ________ times dimmer than B. a. 100 b. 14 c. 7 d. 49 e. 10Which of the following is largest? the size of a typical star. 1 AU. the size of the earth. 1 light-minute.If a star has a radial velocity of 25 km/sec and a transverse velocity of 60 km/sec what is the stars space velocity?
- A star has an apparent magnitude of 10 and an absolute magnitude of 2.5. How far is it?Question 32 Consider three Main Sequence stars, an O tar, an F star and a K star, each with an apparent magnitude of 2. Which star is the most luminous? They're all the same luminosity. The O star The F star The K star Question 33 Consider three Main Sequence stars, an O star, an F star and a K star, each with an apparent magnitude of 2. Which star appears the brightest in the night sky? The O star The F star O The K star O They all appear the same. Please answer bothThe figure below shows the radial velocity of a star plotted as a function of time over the course of 20 days. Where is the planet located in its orbit on day 1 (the start of the graph)? 20 Orbit of star 10- Earth 10+ Time -20 Orbit of planet Radial Velocity