How far away is the star Spica, whose parallax is 0.013"?

Q: Why would it be easier to take parallax measurements if we were on a planet farther from the sun…

A: Parallax is the apparent shift in the position of a star when viewed from two…

Q: Which of the following statements about stellar parallax is true? A. We observe all stars to exhibit…

A: Parallax measurement is used to find the distance of any object from the Geocentric parallax and…

Q: A certain quaternary star system consists of three stars, each of mass m, moving in the same…

A: The expression for the period of the each of three stars is,

Q: In Exercise 12.4 of your book, University Physics 15th edition (see End of the Chapter 12 section),…

A: As given, Mass of Neutron star is equal of mass of Sun. MN=MS=M=1.989×1030 kg Radius of neutron…

Q: If the parallax angle of a star is 0.5", what is the star's distance in light years and kilometers?

A:

Q: Find the distance in parsecs to Vega, which has an annual parallax of 0.129 arcsec.

A: Given: Annual parallax (p) = 0.129 arcsec.

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

A:

Q: If the parallax angle of a star is (0.369) arcseconds, then the distance of the star from the Earth…

A: Using the relationship between the parallax angle and distance of the star and the earth is given…

Q: In Exercise 12.4 of your book, University Physics 15th edition (see End of the Chapter 12 section),…

A:

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: When using the parallax method, if an object appears to shift less, that means its distance is…

A: By using the parallax method, if an object appears to shift less means its distance is greater.

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: Find the distance in parsecs to van maanen's star, a nearby white dwarf, which has an annual…

A: given ,       parallax (p) = 0.232 arcsec

Q: When you say "sub-word parallax," what do you mean?

A: Answer:-  Parallax is the apparent displacement of an observed object due to a change in the…

Q: If A = 31 -2j and B = 2j, what is the magnitude of A+0.5B?

A:

Q: If a star has an apparent magnitude of 3.5 and an absolute magnitude of 5, how far away is it?

A:

Q: Which star in the table of stellar data has the largest parallax? Star distance (pc) |parallax angle…

A: In this problem, it is asking about the star which has maximum parallax.

Q: The parallax angle of a star is 0.00025 °. Part A How far away is the star? Express your answer…

A:

Q: The star Spica is observed to have a parallax of 0.012000. How far away is it in parsecs answers to…

A: Parallax is the change in the apparent position of the object that results from a change in…

Q: Apparent magnitude is the amount of light a star actually gives off O True O False

A:

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: To approximate the distance from the Earth to stars relatively close by, astronomers often use the…

A: Given : Distance between the Earth and the Sun, SE = 92,900,000 mi Parallax angle, p = 0.033 arcsec…

Q: How many parsecs are there in 212 light-years?

A: We know that 1 light year = 0.3066 parsecs

Q: A Cepheid variable has a period of 17 days and an average apparent magnitude of 23. Find its…

A: Given, Period = 17 days Apparent magnitude = 23 Absolute magnitude = 4.83 By the distance modulus…

Q: A star a distance of 1 parsec away has a parallax angle of 1 definition. by arcsecond arcminute…

A: A parsec is defined as the distance to a star which has a parallax angle of 1 arcsecond.

Q: If a star is 30 parsecs away what is it's observed parallax shift ?

A: Given thatThe distance to the star (d)=30 parsecsParallax Formulad=1pp=the parallax angle of the…

Q: What is the dependence of the intensities of stars on parallax? Hint: consider the inverse-square…

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Q: What is an eclipsing binary?

A: Eclipsing binary is a variable star. It comes under binary star system.

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: In Exercise 12.4 of the book, University Physics 15th edition (see end of the Chapter 22 section),…

A:

Q: between january and july , Star appears to move 5 degrees while star b appers to move 7 degress…

A: From January to July, in the span of 6 months, the 2 stars - A & B, are observed. Star A…

Q: what is the answer for sub-item (b) if the radius of the neutron star is 3.457 km? (express your…

A:

Q: Given star A with apparent visual magnitude mv = 6.5, and star B with mv = 4.4, what is the flux…

A: Given, star A with apparent visual magnitude mA = 6.5, and star B with mB = 4.4, the flux ratio…

Q: A certain star has a parallax of 0.647 arcseconds.  How far away is it (in metres)?  [Type in the…

A: Given : Parallax = 0.647 arcseconds

Q: A less massive star will usually live longer than a more massive star O True O False

A: In star hydrogen is the fuel

Q: what is the answer for sub-item (b) if the radius of the neutron star is 42.518 km? (express your…

A: The relation of the volume of the spherical object is V=43πR3 The relation of the density is given…

Q: Find the distance in parsecs to Proxima Centauri, which has an annual parallax of 0.772 arcsec.

A: We need to find distance in parsecs

Q: In Exercise 12.4 of your book, University Physics 15th edition (see End of the Chapter 12 section),…

A:

Q: In Exercise 12.4 of your book, University Physics 15th edition (see End of the Chapter 12 section),…

A: Given: Radius of neutron star = 93.106 km Mass is equal to sun = 1.989 × 1030 kg To determine:…

Q: What is a variable magnitude?

A: A vector can have a varying magnitude and direction with respect to time and position. It is such…

Q: At the distance of Earth, 1AU, the Sun's apparent brightness in the sky is about 1250 W/m 2…

A:

Q: what is the apparent magnitude of the sun as eeen from Saturn about 10AU away?

A: The Sun’s brightness observed from the Earth can be given as, Here, LS, and DE represent the Sun’s…

Stellar evolution

We may see thousands of stars in the dark sky. Our universe consists of billions of stars. Stars may appear tiny to us but they are huge balls of gasses. Sun is a star of average size. Some stars are even a thousand times larger than the sun. The stars do not exist forever they have a certain lifetime. The life span of the sun is about 10 billion years. The star undergoes various changes during its lifetime, this process is called stellar evolution. The structure of the sun-like star is shown below.

Red Shift

It is an astronomical phenomenon. In this phenomenon, increase in wavelength with corresponding decrease in photon energy and frequency of radiation of light. It is the displacement of spectrum of any kind of astronomical object to the longer wavelengths (red) side.