A star has a parallax of 0.01 arc seconds. H

Q: How many times brighter or fainter would a star appear if it were moved to: a. twice its present…

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Q: 31) Star Betelgeuse has an apparent magnitude of 0.42 and an absolute magnitude of -5.6. Estimate…

A: The distance magnitude formula relates the apparent and absolute magnitude of a celestial object…

Q: 1.)How long do you have to wait for a star to undergo its maximum parallactic displacement? 2.) How…

A: 1. A star to undergo its maximum parallactic displacement is about 326 light years that is equal to…

Q: We can use the parallax equation to determine the distances (in pc) to the stars. 1 dA da dB dB = =…

A: From the given related question,we have,mv = 14Parallax of star A = 0.060 arc secondsParallax of…

Q: 4. Alpha Siruis is 3.9 x 1015 miles away from the Earth. Calc the parallax at which the star is…

A: The distance between Alpha Sirius and Earth is given as, d=3.9×1015 miles. TO DETERMINE: The…

Q: If an object formed from a cloud of dust and gas is less than 0.08 solar mass, it forms a   a.…

A: If an object formed from a cloud of dust and gas is less than 0.08 solar mass, it forms a brown…

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: 1. Using the observed (apparent magnitude) light curve for a Cepheid variable shown below, estimate…

A: Given is a plot between the apparent magnitude mV and the period in days plot  So first from the…

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: 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 star is observed to have a parallax of 0.05". If we were to send a radio signal towards this star…

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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 distance in light years from Earth to a star that makes a parallax angle of 2.0 arc…

A: Given  parallex(p)=2 arc second

Q: 2. An unknown star is 2.40 parsec away from the sun, calculate the a) parallax b) distance in…

A: The distance between the unknown star and the sun is given as, d=2.40 parsec. TO DETERMINE: (a)…

Q: Which star in the table below has the greatest diameter?     Star Name d (parsecs) Parallax…

A: d. 58 Ori

Q: January 1st July 1st * * * Star A- Star Consider two pictures of the same part of the sky taken 6…

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Q: Astronomers think of pulsars not as pulsing objects, but rather like a(n)   a. Cepheid variable.…

A: A Cepheid variable is a class of stars, that varies in its apparent magnitude values over a period…

Q: late the distance of a star if you knowt

A: The formula for the distance to a star based on it apparent and absolute magnitude is: d =…

Q: s rotational period?

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Q: Considering absolute magnitude M, apparent magnitude m, and distance d. Compute the unknown for each…

A: Given: Considering absolute magnitude M, apparent magnitude m, and distance d To determine: a.M if…

Q: Suppose you observe a tight eclipsing binary with orbital period of 3 days, and radial velocity…

A: 1. Suppose you observe a tight eclipsing binary with orbital period of 3 days, and radial velocity…

Q: Of the following types of stars, the one that has never been and can never be a giant star is a   a.…

A: a. Red dwarf stars

Q: Sirius, the brightest star in the sky has a parallax of 0.379 arcsec What is its distance in…

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Q: An explosive, although nondestructive, event on the surface of a white dwarf that is part of a…

A: d. nova

Q: Which of the following spectral classes has stars with the hottest temperature? a. F0 b.…

A: Here given the stars with spectral classes.We have to find the stars which is hottest.

Q: Star A has an apparent magnitude of -1. Star B has an apparent magnitude of 3.5. Find BĄ/BB, where…

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Q: A star has a parallax of 0.2 seconds of arc. What is the distance of the star?

A: The change in the apparent position of an object with a change in position of the observer is called…

Q: Because of the precession of the Earth’s axis,   a. there are four seasons, spring, summer, fall,…

A: Precession describes  change in the direction of the axis of a rotating object like planets l…

Q: Stars A and B both have the same spectral class. Star A is 7 times farther away than star B. The…

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Q: How far away is the star Spica, whose parallax is 0.0130?

A: When an observer's point of view changes the displacement observed for an object is called as…

Q: What is the parallax of a star that is 150 pc from Earth?

A: The parallax is given by

Q: A star’s classification is K5 III. What is the temperature of this star?   a. 3000 K   b. 8000 K…

A: According to the HR ( Hertzsprung - Russell ) diagram , The star classification according to their…

Q: Which of the following statements about parallax is not true? A You can demonstrate parallax simply…

A: There are statements about the parallax are given in different options. It is required to determine…

Q: A star has a parallax angle of 0.0270 arcseconds and an apparent magnitude of 4.641. What is the…

A: According to the guidelines, only one question will be answered. Please submit the other question…

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: A star has a distance of 20 pc. What is the parallax of the star?

A: Stellar parallax is defined as the apparent change in an object's position due to a change in the…

Q: Supernova C is 10 times farther away than supernova D. The brightness of supernova C will be…

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Q: If a star has a parallax of 0.050 arc second, what is its distance in pc?

A: Parallax is one of the methods used to calculate the distance between Erath and distant stars.…

Q: The section of the H–R diagram where the Cepheid variables reside is the   a. birth line.   b.…

A: One of the most important tool in study of stellar evolution is the Hertzsprung-Russell diagram(HR…

Q: 1. A star has a parallax of 0.01 arc seconds. How far is it? a. 0.01 parsecS b. 0.1 parsecs c. 10…

A: Given: Parallax P=0.01 arc seconds The distance to the star is , d The relationship between d and P…