ASTR 553/554 (1) : Questions
... luminous because they're intrinsically luminous per kg -- indeed they are quite feeble in that sense. They are luminous only because their furnaces are so massive. b. To emphasize this, estimate your own M/Lbol ratio, using the same units. Assume you weigh 100 kg and radiate like a black body of ar ...
... luminous because they're intrinsically luminous per kg -- indeed they are quite feeble in that sense. They are luminous only because their furnaces are so massive. b. To emphasize this, estimate your own M/Lbol ratio, using the same units. Assume you weigh 100 kg and radiate like a black body of ar ...
Constellations Reading
... patterns. Do they remind you of people, or animals, or mythological beings such as a winged horse or a great warrior holding his sword and shield? Ancient astronomers imagined they saw people, animals, and mythological beings in the sky. They called them constellations. What's a constellation? A con ...
... patterns. Do they remind you of people, or animals, or mythological beings such as a winged horse or a great warrior holding his sword and shield? Ancient astronomers imagined they saw people, animals, and mythological beings in the sky. They called them constellations. What's a constellation? A con ...
Exercise 4 (Stars and the universe) Suggested answers
... wavelengths and therefore hot stars appear bluer. (More precisely, according to Wien’s displacement law, λmax and T of a black body are related by max T 2.90 10 3 m K . Thus, we can calculate the surface temperature of a star from the spectrum.) (b) When the spectrum of a star is examined clo ...
... wavelengths and therefore hot stars appear bluer. (More precisely, according to Wien’s displacement law, λmax and T of a black body are related by max T 2.90 10 3 m K . Thus, we can calculate the surface temperature of a star from the spectrum.) (b) When the spectrum of a star is examined clo ...
Document
... Constellations • People have long made up stories about groups of stars that appear close together on the sky. • Such groupings are called constellations. The sky was “officially” divided up into 88 constellations in 1930 so that a star is associated with only one constellation. ...
... Constellations • People have long made up stories about groups of stars that appear close together on the sky. • Such groupings are called constellations. The sky was “officially” divided up into 88 constellations in 1930 so that a star is associated with only one constellation. ...
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... Constellations • People have long made up stories about groups of stars that appear close together on the sky. • Such groupings are called constellations. The sky was “officially” divided up into 88 constellations in 1930 so that a star is associated with only one constellation. ...
... Constellations • People have long made up stories about groups of stars that appear close together on the sky. • Such groupings are called constellations. The sky was “officially” divided up into 88 constellations in 1930 so that a star is associated with only one constellation. ...
Night Sky Checklist July–August–September Unaided Eye Astronomy
... Draco, the Dragon, is a large, moderately faint constellation whose tail can be found between the Big Dipper and the North Star. Its brightest star, Thuban, was the North Star when the Egyptian pyramids were built. Scorpius, the Scorpion, is a very large, easily located constellation just above the ...
... Draco, the Dragon, is a large, moderately faint constellation whose tail can be found between the Big Dipper and the North Star. Its brightest star, Thuban, was the North Star when the Egyptian pyramids were built. Scorpius, the Scorpion, is a very large, easily located constellation just above the ...
1 Sep: 6.13am BST 15 Sep: 6.43am BST 30 Sep: 7.14am BST
... Sagitta (the Arrow) a small but lovely constellation representing an arrow sailing harmlessly between the two birds. To the left of Altair is another small constellation Delphinus (the Dolphin) its four principle stars forming a box shape known as Job’s Coffin. Finally, from these constellations, fo ...
... Sagitta (the Arrow) a small but lovely constellation representing an arrow sailing harmlessly between the two birds. To the left of Altair is another small constellation Delphinus (the Dolphin) its four principle stars forming a box shape known as Job’s Coffin. Finally, from these constellations, fo ...
Powerpoint Presentation (large file)
... generation of Population II stars, then ejected into space and incorporated into a later stellar generation ...
... generation of Population II stars, then ejected into space and incorporated into a later stellar generation ...
Week 6
... The bright star in the top left corner of Orion, Betelgeuse, has a radius 936 times that of the Sun and a surface temperature of 3500 K. What is the luminosity of this star? If Betelgeuse is 640 ly from Earth, what is the brightness of the light from Betelgeuse that reaches Earth? ...
... The bright star in the top left corner of Orion, Betelgeuse, has a radius 936 times that of the Sun and a surface temperature of 3500 K. What is the luminosity of this star? If Betelgeuse is 640 ly from Earth, what is the brightness of the light from Betelgeuse that reaches Earth? ...
Star- large ball of gas held together by large ball of gas held
... Stars originate from clouds of gas and dust molecules that clump up due to gravity. When the clump reaches the size of Jupiter, it creates enough energy by nuclear fusion to shine – becoming a star. For stars that are about the size of our sun, after main sequence they become giants, white dwarfs, a ...
... Stars originate from clouds of gas and dust molecules that clump up due to gravity. When the clump reaches the size of Jupiter, it creates enough energy by nuclear fusion to shine – becoming a star. For stars that are about the size of our sun, after main sequence they become giants, white dwarfs, a ...
Astronomy Part 2 - Malvern Troop 7
... runs a distinctive line of three stars comprising Orion’s Belt. To the top right of Orion lies another prominent star, Alderbaran, which represents the eye of Taurus. Continue the line from Orion through Aldebaran brings you to the Pleiades, a star cluster. ...
... runs a distinctive line of three stars comprising Orion’s Belt. To the top right of Orion lies another prominent star, Alderbaran, which represents the eye of Taurus. Continue the line from Orion through Aldebaran brings you to the Pleiades, a star cluster. ...
The Night Sky May 2016 - Bridgend Astronomical Society
... that lies at a distance of 83 million light years in the constellation of Ursa Major. It is the brightest galaxy in the Ursa Major group of some 50 galaxies. Our own Milky Way galaxy is now thought to be a barred spiral like M109. Learn more about the Faulkes Telescopes and how schools can use them: ...
... that lies at a distance of 83 million light years in the constellation of Ursa Major. It is the brightest galaxy in the Ursa Major group of some 50 galaxies. Our own Milky Way galaxy is now thought to be a barred spiral like M109. Learn more about the Faulkes Telescopes and how schools can use them: ...
I CAN SEE THE STARS IN YOUR EYES
... Your space craft begins to travel at the speed of light, taking you towards the sun. Traveling at this speed, the trip from Earth to the sun, a distance of 93 million miles, would take about 8 minutes, not very long for such a long trip! Yet, to get to the next closest star, Proxima Centauri, would ...
... Your space craft begins to travel at the speed of light, taking you towards the sun. Traveling at this speed, the trip from Earth to the sun, a distance of 93 million miles, would take about 8 minutes, not very long for such a long trip! Yet, to get to the next closest star, Proxima Centauri, would ...
Stars
... When we look up into the night sky, it is easy to imagine, as did the ancient Greeks, that all the stars are the same distance, stuck to some sort of Celestial Sphere that rotates through the heavens as the Earth stands still. This conclusion would be very wrong, however. It has taken astronomers th ...
... When we look up into the night sky, it is easy to imagine, as did the ancient Greeks, that all the stars are the same distance, stuck to some sort of Celestial Sphere that rotates through the heavens as the Earth stands still. This conclusion would be very wrong, however. It has taken astronomers th ...
_____ 1. Which of the following statements is NOT true about stars
... ___________________ once it has used up all of its hydrogen. The center of the star will _________________ as the atmosphere begins to grow large. The mass of the star will determine if it will be a red giant or a supergiant. 11. What is the difference between a red giant and a supergiant? _________ ...
... ___________________ once it has used up all of its hydrogen. The center of the star will _________________ as the atmosphere begins to grow large. The mass of the star will determine if it will be a red giant or a supergiant. 11. What is the difference between a red giant and a supergiant? _________ ...
Stars Notes
... Characteristics used to classify stars include color, temperature, size, composition and brightness Color – red, red-orange, yellow, white, blue Temperature – ranges from 3,000 to 50,000 Size – super giant, giant, medium, dwarf, neutron Composition – what makes up the star (elements) Brightn ...
... Characteristics used to classify stars include color, temperature, size, composition and brightness Color – red, red-orange, yellow, white, blue Temperature – ranges from 3,000 to 50,000 Size – super giant, giant, medium, dwarf, neutron Composition – what makes up the star (elements) Brightn ...
PISGAH Dr. Bob Hayward ASTRONOMICAL Astronomer/Educator
... Go back to the belt of Orion and draw a line to the east. Rising in the southeast is a bright white star. This is Sirius the Dog Star. While Sirius appears to be the brightest star in the nighttime sky, it is not intrinsically the brightest nor is it the closest to us. But it is a combination of bot ...
... Go back to the belt of Orion and draw a line to the east. Rising in the southeast is a bright white star. This is Sirius the Dog Star. While Sirius appears to be the brightest star in the nighttime sky, it is not intrinsically the brightest nor is it the closest to us. But it is a combination of bot ...
Boötes
Boötes /boʊˈoʊtiːz/ is a constellation in the northern sky, located between 0° and +60° declination, and 13 and 16 hours of right ascension on the celestial sphere. The name comes from the Greek Βοώτης, Boōtēs, meaning herdsman or plowman (literally, ox-driver; from βοῦς bous “cow”). The ""ö"" in the name is a diaeresis, not an umlaut, meaning that each 'o' is to be pronounced separately.One of the 48 constellations described by the 2nd century astronomer Ptolemy, Boötes is now one of the 88 modern constellations. It contains the fourth brightest star in the night sky, the orange-hued Arcturus. Boötes is home to many other bright stars, including eight above the fourth magnitude and an additional 21 above the fifth magnitude, making a total of 29 stars easily visible to the naked eye.