A star has a parallax of 0.2 seconds of arc. What is the distance of the 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: What is the distance in parsecs to Vega, which has an annual parallax of 0.129 arcsec.
A: Annual parallax (p), p=0.129 arcsec
Q: 6. |A visual binary has a parallax 00 = 0.4 arcsec, a maximum separation a00 = 6.0 arcsec, and an…
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Q: An existing dc three wire system is to be converted into a 3phase 4 wire system by adding a fourth…
A: Solution: As per the given data, Let the voltage between outers and neutral be V in both cases…
Q: f a star’s lifespan is 1.1 × 10 7 years, what is its mass and spectral type?
A: The relation between star's lifetime and mass is given by : tt⊙=MM⊙−2.5Here, M⊙ is mass of sun.…
Q: Why are Earth-based parallax measurements limited to the nearest stars?
A: Parallax is one of the methods used by astronomers to estimate the distance to stars and other…
Q: Orion nebula is located at 450 pc. Calculate the parallax angle.
A: Parallax is a method used to calculate the distance to astronomical objects like stars. Parallax is…
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 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: Why can’t astronomers use parallax to measure the distance to stars that are extremely far away?
A: Because it is difficult to measure from earth reason is effects of earth atmospheric. Parallel angle…
Q: Explain Parallax
A: There is an apparent shift in position of the object due to the change in point of observation .This…
Q: The velocities of the two stars are 28km/s and 13km/s, and their periods are both 16 years. Find the…
A: Formula Let period of a star is T, velocity is v, orbital radius is r and , mass is M, Now the…
Q: Find the distance in parsecs to Vega, which has an annual parallax of 0.129 arcsec. pc
A: It is given that,
Q: What type of star has the longest life span? a. O b. K c. B d. A e. M
A: What type of star has the longest life span?
Q: A star is observed at a distance of 90 pc. What will be its parallax angle?
A: Parallax is defined as the change in the apparent position of an object due to a change in the…
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: an object is a located at the following equatorial coordinates (J2000): 12h 27m 53.6s (right…
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Q: If a star has a parallax of 0.016 arc second how far is it?
A: Parallax is the shift in the apparent position of stars when observed from different positions. This…
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: 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: According
A: There is a simple relationship between a star's distance and its parallax angle: d = 1/p The…
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: 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: is observed to have a period of 10 yr. The radial velocities of the two stars are determined to v1r…
A: Concept used : Two stars orbiting around each other form a binary star system Given data:-*Time…
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: A star is observed to have a parallax of 0.05". If we were to send a radio signal towards this star…
A: The parallax angle of a star is observed to be θ=0.05''=0.05 arcseconds. Let the distance to the…
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: Which type of star would be the largest? a. M b. O c. B d. K e. A
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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: 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: You measure a star to have a parallax angle of 0.04 arc-seconds. What fraction of a degree is this?
A: Given 0.04 arc second=....°
Q: Two stars, named A and B, each with a mass equal to the Sun's mass are in orbit around each other.…
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Q: A star is observed to have a parallax of 0.0015". What is the distance to the star in units of AU?
A: The distance to the star can be calculated using the formula: distance (in parsecs) = 1 / parallax…
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 nearby star has a parallax of 0.317 arcseconds. How long does it take the light from this star to…
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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: τ Ceti is 11.9 ly away. How many arc seconds of parallax will it have?
A: Given: Distance of τ Ceti is d=11.9ly.
Q: You measure a star to have a parallax angle of 0.12 arc-seconds What is the distance to this star in…
A: Write the given values of the problem- Parallax angle=0.12 arc-second
Q: Calculate the apparent magnitude of the Sun.
A: The apparent magnitude of a star is how bright the star is as observed from Earth. Apparent…
Q: A star has a distance of 40 pc. What is the parallax of the star?
A: The distance of a star and its parallax are related as, d=1/p, where, d= distance in parsecs, and…
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