THE AGNITUL 2: Use the fact that our closest neighboring star (Proxima Centauri) is a a distance of 4.24 1.y. and has a radius of about 98.1 × 10³ km to determine its angular diameter. 11 Mooten) obulingana manage to noiton srb of nojtouborin
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Q: Part 1 or 2 To determine the lifetime of a 1.51Meun star, we use the formula for stellar lifetimes.…
A: We used the given formula,
Given: Radius =98.1km
Distance= 4.24 ly
As we know one light year =9.461
= 4.24
=40.11
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Solved in 2 steps
- 5. The approximate relationship between the luminosity and the period of Cepheid variables is Lstar[in units Lsun] = 335 P [in units days]. Delta Cephei has a cycle period of 5.4 days and a parallax of 0.0033 arcseconds. A second Cepheid appears 1/1000 times as bright and has a period of 54days. How far away (in parsecs) is the second more distant Cepheid?Part 3 1. The diameter of the Sun is 1,391,400 km. The diameter of the Moon is 3,474.8 km. Find the ratio, r= Dsa/Dsvan between the sizes. 2. From the point of view of an obs erver on Eanth (consider the Earth as a point-like object), during the eclipse, the Moon covers the Sun exactly. Sketch a picture to illustrate this fact. Use a nuler to get a straight line. Your drawing does not need to be in scale. 3. The Sun is 1 Astronomical Unit (AU) away from the Earth. Find the distance between the Earth and the Moon in AU's using the ratio of similar triangles. Show your work. DEM= AU. Convert this to kilometers. Use 1 AU = 149,600,000 km. DEM = km.Next you will (1) convert your measurement of the semi-major axis from arcseconds to AU, (2) convert your measurement of the period from days to years, and (3) calculate the mass of the planet using Newton's form of Kepler's Third Law. Use Stellarium to find the distance to the planet when Skynet took any of your images, in AU. Answer: 4.322 AU Use this equation to determine a conversion factor from 1 arcsecond to AU at the planet's distance. You will need to convert ? = 1 arcsecond to degrees first. Answer: 2.096e-5 AU (2 x 3.14 x 4.322 x (.000278/360) = 2.096e-5) Next, use this number to convert your measurement of the moon's orbital semi-major axis from arcseconds to AU. A) Calculate a in AU. B) Convert your measurement of the moon's orbital period from days to years. C) By Newton's form of Kepler's third law, calculate the mass of the planet. D) Finally, convert the planet's mass to Earth masses: 1 solar mass = 333,000 Earth masses.
- Could you find the Mass of the Sun using the slope of the of T2 versus a3, using the values that are in units of years and AU? ExplainRadius Problem 4) Is the center of gravity of our solar system (including plantes) exactly in the same location as the Oort Cloud 20,000 to 100,000 AU center of gravity of the sun on its own? reason your answer nt movement, but no neel has a radius of 6 che net torque on thea) Sketch a generic HR diagram, including labels for the axes. (Take a picture or scan your work and upload it as a separate file.) b) Consider the following three stars, place them on your HR diagram and determine their rough spectral type and class of star. Also calculate their size relative to the Sun. I) L = 0.001 Lsun T = 3000~K II) L = 20,000 Lsun T = 4000K III) L = 0.001 Lsun T = 15,000K
- 3- Consider a binary star system in which the two stars are seen to be 1.50" apart. Determine the actual physical separation of those stars (in AU) if this binary system is located 9.50 1.y. from us.Match each characteristic below of a one-solar-mass star to its appropriate phase. Answer M for Main-sequence Star, or P for Protostar. If the first is M and the rest P, enterMPPPPPP). A) energy generated by nuclear fusion B) pressure and gravity are NOT precisely balanced. C) surface radiates energy at same rate that core generates energy D) radius much larger than the Sun E) energy generated by gravitational contraction F) lasts about 10 billion years G) luminosity much greater than the SunThe Tully-Fischer method relies on being able to relate the mass of a galaxy to its rotation velocity. Stars in the outer-most regions of the Milky Way galaxy, located at a distance of 50 kpc from the galactic centre, are observed to orbit at a speed vrot determine the mass in the Milky Way that lies interior to 50 kpc. Express your answer in units of the Solar mass. 250 km s-1. Using Kepler's 3rd Law,