Astronomy 120
... than the other. Then the absorption lines from the fainter star do not appear in the spectrum, but those of the brighter one do. Describe how the Doppler shift would appear from the orbital motion of the stars. 7. Zeilik Study Exercise 13.8 The star Regulus has a mass about five times that of the su ...
... than the other. Then the absorption lines from the fainter star do not appear in the spectrum, but those of the brighter one do. Describe how the Doppler shift would appear from the orbital motion of the stars. 7. Zeilik Study Exercise 13.8 The star Regulus has a mass about five times that of the su ...
PHYS 2410 General Astronomy Homework 1
... 10. ___________ is the brightest star in the constellation of Ursa Majoris. ...
... 10. ___________ is the brightest star in the constellation of Ursa Majoris. ...
STARS AND CONSTELLATIONS
... - Pole star- called Polaris - Known to the Vikings as the Jewel Nailhead, to the Mongols as the Golden Peg, to the Chinese as the Emperor of Heavens, and to the American Indians as the Chief Star. The American Indians made and used star charts. - Polaris is a variable star a. Varies in brightness b. ...
... - Pole star- called Polaris - Known to the Vikings as the Jewel Nailhead, to the Mongols as the Golden Peg, to the Chinese as the Emperor of Heavens, and to the American Indians as the Chief Star. The American Indians made and used star charts. - Polaris is a variable star a. Varies in brightness b. ...
CONSTELLATION LYRA, THE LYRE Lyra (Latin for lyre) is a small
... In Greek mythology, Lyra represents the lyre of Orpheus. Made by the god Hermes (Mercury) from a tortoise shell, it was said to be the first lyre ever produced. Orpheus's music was said to be so great that even inanimate objects such as trees, streams, and rocks could be charmed. Joining Jason and t ...
... In Greek mythology, Lyra represents the lyre of Orpheus. Made by the god Hermes (Mercury) from a tortoise shell, it was said to be the first lyre ever produced. Orpheus's music was said to be so great that even inanimate objects such as trees, streams, and rocks could be charmed. Joining Jason and t ...
Summer Triangle (Winter in the south hemisphere) Lyra
... is a yellow-orange giant 72 light-years away. Beta Cygni or Albireo is one of the most famous double stars in the sky. It consists of a gold third magnitude star with an indigo fifth magnitude companion, separated by 34 arcseconds. The Albireo system is about 340 light-years away and has an orbital ...
... is a yellow-orange giant 72 light-years away. Beta Cygni or Albireo is one of the most famous double stars in the sky. It consists of a gold third magnitude star with an indigo fifth magnitude companion, separated by 34 arcseconds. The Albireo system is about 340 light-years away and has an orbital ...
Stars
... appear brighter than those that are farther away • Absolute Magnitude: big stars are brighter than small stars. This is the ACTUAL brightness of the star – If all the stars were lined up equi-distant from Earth, we would be able to compare their actual brightness ...
... appear brighter than those that are farther away • Absolute Magnitude: big stars are brighter than small stars. This is the ACTUAL brightness of the star – If all the stars were lined up equi-distant from Earth, we would be able to compare their actual brightness ...
How it works:
... This constellation is easy to find! Look for the big “W” in the northern sky. The “W” represents the outline of Queen Cassiopeia tied to a throne. According to the Greek myth, this was her punishment for being extremely vain. Depending on the time of night and the season, the “W” will be right-side ...
... This constellation is easy to find! Look for the big “W” in the northern sky. The “W” represents the outline of Queen Cassiopeia tied to a throne. According to the Greek myth, this was her punishment for being extremely vain. Depending on the time of night and the season, the “W” will be right-side ...
Document
... j. How is it possible that Canopus is more luminous than Achernar, given their respective spectral types? Canopus is cooler than Achernar; therefore, the only way Canopus can be more luminous is because it is LARGER. 2. List the evolutionary stages of the Sun’s life cycle & describe how its size (Ra ...
... j. How is it possible that Canopus is more luminous than Achernar, given their respective spectral types? Canopus is cooler than Achernar; therefore, the only way Canopus can be more luminous is because it is LARGER. 2. List the evolutionary stages of the Sun’s life cycle & describe how its size (Ra ...
Aug14Guide - East-View
... Vega we come to the brightest star of Cygnus, Deneb. Deneb is a totally different type of star to Vega as it is a blue-white supergiant which is estimated to be about 200,000 times more luminous that our Sun. Although it appears less bright than Vega in the sky, it is actually at a distance of 1,550 ...
... Vega we come to the brightest star of Cygnus, Deneb. Deneb is a totally different type of star to Vega as it is a blue-white supergiant which is estimated to be about 200,000 times more luminous that our Sun. Although it appears less bright than Vega in the sky, it is actually at a distance of 1,550 ...
December 2014 - Coconino Astronomical Society
... the constellation Draco, was well known to the ancient Egyptians as the North Star. The brightest stars which will become north stars will be Deneb, in 8000 years, and Vega in Lyra in 12,000 years, though they will not be as close to the pole as Thuban and Polaris have been. – Note the preceding tab ...
... the constellation Draco, was well known to the ancient Egyptians as the North Star. The brightest stars which will become north stars will be Deneb, in 8000 years, and Vega in Lyra in 12,000 years, though they will not be as close to the pole as Thuban and Polaris have been. – Note the preceding tab ...
Astronomical Ideas – Math Review practice problems 1. The radius
... 1. The radius of the Sun is 100 times the Earth’s radius. What is the volume of the Sun, relative to the volume of the Earth? 2. How many days does it take to travel 9.46 * 1012 km at a speed of 3 * 108 m/sec? 3. If you replaced the Earth with a planet of the same mass but three times larger in radi ...
... 1. The radius of the Sun is 100 times the Earth’s radius. What is the volume of the Sun, relative to the volume of the Earth? 2. How many days does it take to travel 9.46 * 1012 km at a speed of 3 * 108 m/sec? 3. If you replaced the Earth with a planet of the same mass but three times larger in radi ...
August Evening Skies
... The planet Jupiter is plotted at map time, mid-August 2005. Seven objects of first magnitude or brighter are visible. In order of brightness they are: Jupiter, Arcturus, Vega, Altair, Antares, Spica, and Deneb. In addition to stars, other objects that should be visible to the unaided eye are labeled ...
... The planet Jupiter is plotted at map time, mid-August 2005. Seven objects of first magnitude or brighter are visible. In order of brightness they are: Jupiter, Arcturus, Vega, Altair, Antares, Spica, and Deneb. In addition to stars, other objects that should be visible to the unaided eye are labeled ...
Vega
Vega (α Lyr, α Lyrae, Alpha Lyrae) is the brightest star in the constellation Lyra, the fifth brightest star in the night sky and the second brightest star in the northern celestial hemisphere, after Arcturus. It is a relatively close star at only 25 light-years from Earth, and, together with Arcturus and Sirius, one of the most luminous stars in the Sun's neighborhood.Vega has been extensively studied by astronomers, leading it to be termed ""arguably the next most important star in the sky after the Sun."" Vega was the northern pole star around 12,000 BCE and will be so again around the year 13,727 when the declination will be +86°14'. Vega was the first star other than the Sun to be photographed and the first to have its spectrum recorded. It was one of the first stars whose distance was estimated through parallax measurements. Vega has served as the baseline for calibrating the photometric brightness scale, and was one of the stars used to define the mean values for the UBV photometric system.Vega is only about a tenth of the age of the Sun, but since it is 2.1 times as massive its expected lifetime is also one tenth of that of the Sun; both stars are at present approaching the midpoint of their life expectancies. Vega has an unusually low abundance of the elements with a higher atomic number than that of helium. Vega is also a suspected variable star that may vary slightly in magnitude in a periodic manner. It is rotating rapidly with a velocity of 274 km/s at the equator. This is causing the equator to bulge outward because of centrifugal effects, and, as a result, there is a variation of temperature across the star's photosphere that reaches a maximum at the poles. From Earth, Vega is being observed from the direction of one of these poles.Based on an observed excess emission of infrared radiation, Vega appears to have a circumstellar disk of dust. This dust is likely to be the result of collisions between objects in an orbiting debris disk, which is analogous to the Kuiper belt in the Solar System. Stars that display an infrared excess because of dust emission are termed Vega-like stars.