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
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Q: The surface of a star usually has the highest temperature O True O False
A:
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Q: Find the distance in parsecs to Vega, which has an annual parallax of 0.129 arcsec. pc
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A: given , parallax (p) = 0.232 arcsec
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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…
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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: According
A: There is a simple relationship between a star's distance and its parallax angle: d = 1/p The…
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…
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Q: A distant F0 star is 6.3 times less bright than a nearer F0 star which has a parallax of 0.2…
A: Given: p=0.2 arcsec The distance of the distant F0 star from the nearer F0 star is : d=1p=10.2=5…
Q: How far away is the star Spica, whose parallax is 0.0130?
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Q: What is the parallax of a star that is 150 pc from Earth?
A: The parallax is given by
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Q: A star has a distance of 40 pc. What is the parallax of the star?
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Q: A Type Ia supernova is observed and achieves an apparent magnitude of m = 19.89 at peak brightness.…
A: Given Values :The absolute magnitudes of Type Ia supernovae at peak brightness, M = -19 Apparent…
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- A star with a trigonometric parallax of .02 arcseconds has a distance of O2.0 light years. 50 pc. 4 kpc. 20 pc. O need more information (magnitudes)A star is observed to have a parallax 0.45". Show that it is a distance of 7.2 LY away.Which star in the HR diagram below will no longer exist in 1 Billion years? 60 Mun 10⁰ 10⁰ 10 10² 10⁰ 10 10 10 10 30 M 10 Solar Radi Lifetime 10 yrs 0.1 Solar Radius 10 Solar Radus O Centauri 30,000 10M Sirius B MAIN Bellatrix Lifetime 10 B Rigal Deneb 6M MA Achemar SEQUENCE 18yrs WHITE SUPERGIANTS Canopus Vega 10 Soler Radi Procyon B 10,000 Srius Lifetime 10 DWARFS Alar Arcturus Procyon eyon Polaris 5 Mun Liteting 10 yrs SIM 7 Cet AFG 6,000 GIANTS Centauri A Pollux Centaur B Eridani Aldebaran K Artares 61 Cyani A Betelgeuse Barnard's Star 61 Cygni B Lacalle 9352 0.3M Gliese 725 A Gliese 725 B Ross 128 Wolf 359, Proxima Centauri M DX Cancri 3.000
- The star Rigel has a radial velocity r = 20.7km s-1, parallax 700 = 4.22mas, and proper motion components la= 1.67mas yr'in right ascension and us = 0.56mas yr1 in declination. What are its total proper motion, %3D %3D %3D tangential velocity, and space motion?Which star in the HR diagram below has the largest radius? 1060 M 10⁰ 10⁰ 10² 6 10 30 M 10 Solar Radi Lifetime 10 yrs 0.1 Solar Radus 30,000 B Centauri Spica 10M MAIN Bellatrix Lifetime B Deneb Rigal 6M Achemar SEQUENCE Lifetime WHITE SUPERGIANTS Canopus Vega 10 Solar Rad Procyon B 10,000 Srius Lifetime DWARFS Alar Arcturus Procyon Polaris 5 M Littine" 10 yrs S 1M Cet AFG 6,000 GIANTS Centauri A Pollux Centaur B Eridan Antares Aldebaran K Betelgeuse Barnard's Star 61 Cyani A 61 Cyani B Lacalle 9352 0.3M Gliese 725 A Gliese 725 8 Wolf 359 Proxima Centauri M Ross 128 DX Cancri 3,000