Sirius, how fast is Sirius
Q: Which star is the faintest: alpha gemini, beta perseus, gamma perseus, beta gemini
A: The star cluster, that is, a tiny glob of stars on the outskirts of the Milky Way that are…
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: Hertzsprung-Russell Diagram Blue or blue white White Yellow Red orange Red Superglants beleignne…
A: In this problem, it is asking about the brightest star.
Q: Hertzsprung-Russell Diagram Blue or blue White Vellow Red-orange Red Rigel Beteignuse Aldebaran…
A: As it can be seen from Hertzsprung-Russell diagram that the y axis represents brightness which…
Q: The surface of a star usually has the highest temperature O True O False
A:
Q: Why is the sun orange?
A:
Q: How much more luminous is the Sun viewed from Earth than from Pluto, 40.0 AU away? from Earth Lsun…
A: Luminosity follows inverse square relationship with the distance Thus, Lsun from Earth/ Lsun from…
Q: If a star has a parallax angle of 0.768" and the width of your pinky is about 1 degree, what…
A: Parallax method is used to find the distances of distant objects. Parallax can be understood with…
Q: Hertzsprung-Russell Diagram Blue or blue w White Vellow Red orange Red Rioe Supergl Beteigeuse Main…
A: The region of main sequence contains large number of stars than any other region. Therefore most of…
Q: DISTANCE IN
A: Parallax angle is in mas, we can convert angle to distance in parsec by following formula Distance…
Q: If a star is located at 62.5 pc and has an apparent magnitude of 6 what is it absolute magnitude?
A: The brightness of a star is determined by its composition and distance from the Earth. There are two…
Q: What is the surface temperature of a star that emits light with a wavelength of 400 nanometers?
A:
Q: an absolute magnitude of -3 is more luminous than an absolute magnitude of-8.
A: Given, Absolute magnitude of objects
Q: The red supergiant star in Orion is called Betelgeuse, and its distance is 130 pc. What is the…
A: Parallax is the defined as the apparent shift in the position of any star (or other object) against…
Q: Earth tugs the sun around as it orbits, but it affects the radial velocity of the sun by only 0.09…
A:
Q: At rest, hydrogen has a spectral line at 144 nm. If this line is observed at 168 nm for the star…
A: Given that Hydrogen has a spectral line at λ= 144 nm =10-9m This line is observed at λ'= 168 nm=10-9…
Q: What is the temperature of a star emitting light with a peak wavelength of 7,080 angstroms? T=…
A: Given : λmax = 7080 angstroms = 7080*10-10 m. From Wien's law the temperature of star is T =…
Q: Favorite Star Polaris is 132 pc from Earth and has an apparent magnitude of 2.5. What is its…
A: When the brightness of a star is measured there are two ways, Apparent and absolute magnitudes.…
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: Two stars have the exact same luminosity, but star Y is four times dimmer looking that star X. This…
A: Basic Details Two stars star X and star Y have same luminosity. The brightness of the star is…
Q: Two stars have the difference between their apparent magnitudes +5, so their apparent luminosity…
A: The difference between the apparent magnitude is given as m1-m2=+5
Q: Mention a method to measure temperature of a star.
A: Temperature of the stars cannot be measured directly as they are very far.
Q: From Earth, the Sun appears brighter than any other star because the Sun is the
A: From Earth , the Sun appears brighter than any other star because the Sun is the ______
Q: Distinguish between eutectoid and eutectic terms a in binary system.
A: We have to give difference between eutectoid and eutectic terms
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: How does luminosity differ from apparent brightness ?
A: The difference between luminosity and apparent brightness depends on distance. Luminosity is an…
Q: From the HR diagram above, we could determine that the star Barnard's Star has a temperature 3.03E+3…
A: Solution: The luminosity of state is given by the following formula, L=4πR2σT4…
Q: Why do distant stars look redder than their spectral types suggest?
A: The pace is mostly empty but there are areas of large density of the interstellar medium. It…
Q: nound a Star a verocity 4x 1ou can conewe to the Stardas eto the Star as Pa seto the Staras Pg away…
A: Newton's Law of Gravitation According to Newton's Law of gravitation, the gravitational force…
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: Which star is at higher temperature, a red star or a blue star?
A: The temperature of blue star is 40000 Kelvin degrees.
Q: Hertzsprung-Russell Diagram Blue or blue-white White Yellow Red-orange Red O Rigel Supergiants…
A: Option a is the right answer Red color of the stars have lowest surface temperature
Q: As we read in the book, a star that appears to be 1 magnitude brighter will have approximately 2.5…
A:
Q: As we read in the book, a star that appears to be 1 magnitude brighter will have approximately 2.5…
A: Required : Approximate ratio of the flux.
Q: What is the color of the stars shown on the diagram that have the lowest surface temperature? O red…
A: Required: Color of the stars,
Q: Stars A and B both have the same spectral class. Star A is 7 times farther away than star B. The…
A: Consider the brightness of the stars A and B be FA and FB, respectively, these luminosities be LA…
Q: You see a blue star directly over Avalon's equator. It appears to be moving north at 5.0 arcseconds…
A: Given: The star moves north at 5.0 arcseconds per year. To determine: The distance of this star from…
Q: Calculate the gravitational energy released by the Sun.
A: “Since you have asked multiple question, we will solve the first question for you. If you want any…
Q: A nearby star has a parallax of 0.317 arcseconds. How long does it take the light from this star to…
A:
Q: Temperature (C) What is the color of the stars shown on the diagram that have the highest surface…
A: SOlution: To find the highest temeprature region in the graph
Q: The white dwarf star Sirius B has a luminosity of 0.025 L⊙. If you were 1 AU from Sirius B, would…
A: Given,Temperature, Apparent magnitude of the sun, The luminosity of the star sirius B, The…
Q: What does a quarter wavelength look like , like theta/4
A:
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: Where is +2FFcos(theta) coming from?
A:
Q: What phenomenon causes twinkling of star on a clear night?
A: Given: twinkling of stars
Q: The coolest stars are usually blue in color O True O False
A: Given statement : " the coolest stars are blue in colour"
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