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

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: 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…

A:

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: Which spectral line does this likely correspond to?

A: we can use the doppler shift formula to find laboratory wavelength.

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: 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: Explain Parallax

A: There is an apparent shift in position of the object due to the change in point of observation .This…

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

A: d. 58 Ori

Q: Two cars of masses mį and m2 collide at an intersection. Before the collision, car 1 was traveling…

A: Apply momentum conservation in x-direction. m1v1=m1+m2vcosθvcosθ=m1v1m1+m2      ...... (1)

Q: the parallax angle of a star to be 0.002 arc-seconds.  what would the  distance be to this star?

A: Given, Parallax angle, p=0.002 arc-seconds

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: Consider a binary system in which both stars have circular orbits. For star 1, the radius of this…

A: Given:  Distance between the stars =d= 0.5 AU + 0.125 AU Aperture = D = 2.4 m Distance of starts…

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: is

A: The relationship between apparent visual magnitude(m), Absolute visual magnitude(Mv) and distance(d)…

Q: You observe a star with an apparent magnitude mv=12 at a distance of 1 kiloparsec.  What is this…

A: The relation between apparent magnitude, absolute magnitude, and distance of star in parsec is given…

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: 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 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: Calculate by how many times Betelgeuse is brighter than the Sun, if its parallax is 0.006 arcsec,…

A: The objective of the question is to calculate how much brighter Betelgeuse is compared to the Sun.…

Q: A nearby star has a parallax of 0.317 arcseconds. How long does it take the light from this star to…

A:

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: 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: 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…