Life Cycle of Stars
... • The matter inside the star will be compressed so tightly that its atoms are compacted into a dense shell of neutrons. If the remaining mass of the star is more than about three times that of the Sun, it ...
... • The matter inside the star will be compressed so tightly that its atoms are compacted into a dense shell of neutrons. If the remaining mass of the star is more than about three times that of the Sun, it ...
chapter-30-pp
... slightly toward blue. This is called a “blue shift”. This is caused by shorter light waves as it moves toward Earth. ...
... slightly toward blue. This is called a “blue shift”. This is caused by shorter light waves as it moves toward Earth. ...
final review sheet
... 1) A star which appears blue is hotter than a red star because of the Doppler shift. 2) For two stars in a binary orbit, the center of mass will be closer to the more massive one. 3) If the distance between the Sun and the Earth increased by a factor of 2, the Sun’s luminosity would decrease by a fa ...
... 1) A star which appears blue is hotter than a red star because of the Doppler shift. 2) For two stars in a binary orbit, the center of mass will be closer to the more massive one. 3) If the distance between the Sun and the Earth increased by a factor of 2, the Sun’s luminosity would decrease by a fa ...
Stars are classified according to their color
... • Stars are classified according to their color temperature: ...
... • Stars are classified according to their color temperature: ...
First Exam - University of Iowa Astrophysics
... 26. You look up in the night sky and see the planet Jupiter, the planet Mars, and the Moon very close together. You know that they are located in or close to one of the following. Which is it? (a) the ecliptic ∗ (b) the celestial equator (c) the zenith (d) the north celestial pole (e) the constellat ...
... 26. You look up in the night sky and see the planet Jupiter, the planet Mars, and the Moon very close together. You know that they are located in or close to one of the following. Which is it? (a) the ecliptic ∗ (b) the celestial equator (c) the zenith (d) the north celestial pole (e) the constellat ...
Stars and Galaxies
... 11. The _____________________________ of a star is a measure of the amount of light a star actually gives off. 12. The amount of light received on Earth is ____________________________. 13. A star that is actually dim can appear very bright if it is close to _______________. The opposite is true als ...
... 11. The _____________________________ of a star is a measure of the amount of light a star actually gives off. 12. The amount of light received on Earth is ____________________________. 13. A star that is actually dim can appear very bright if it is close to _______________. The opposite is true als ...
Handout 3 1-2 ppt
... Fifty thousand years ago, a giant fireball streaked across the North American sky. It struck the earth in what is now northern Arizona, exploding with the force of 2 ½ million tons of TNT. ...
... Fifty thousand years ago, a giant fireball streaked across the North American sky. It struck the earth in what is now northern Arizona, exploding with the force of 2 ½ million tons of TNT. ...
Physics@Brock - Brock University
... Contemplating the stars, their enormous distances from us, their enormous sizes (some are so large that they would swallow up the entire orbit of the Earth!), their complex workings, and their interesting life stories, never fails to elicit a cosmic feeling. The universe is vast, and we are but a sm ...
... Contemplating the stars, their enormous distances from us, their enormous sizes (some are so large that they would swallow up the entire orbit of the Earth!), their complex workings, and their interesting life stories, never fails to elicit a cosmic feeling. The universe is vast, and we are but a sm ...
The 22 First Magnitude Stars
... • Changes orientation of equatorial coordinate system • Pole star changes (Thuban Polaris Vega) • Vernal equinox (“first point of Aries”) is now in Pisces; moving westward into Aquarius • Tropics of Cancer/Capricorn are really Gemini/Sagittarius today • Star charts change orientation or Epoch (1 ...
... • Changes orientation of equatorial coordinate system • Pole star changes (Thuban Polaris Vega) • Vernal equinox (“first point of Aries”) is now in Pisces; moving westward into Aquarius • Tropics of Cancer/Capricorn are really Gemini/Sagittarius today • Star charts change orientation or Epoch (1 ...
main sequence star
... • Small mass stars will collapse into white dwarfs after being red giants. • The outer gases are lost, which allows us to see the core of the star. The white dwarf is very dense and hot. The emit (release) less light than they did when they were stars. • As these white dwarfs cool they become fainte ...
... • Small mass stars will collapse into white dwarfs after being red giants. • The outer gases are lost, which allows us to see the core of the star. The white dwarf is very dense and hot. The emit (release) less light than they did when they were stars. • As these white dwarfs cool they become fainte ...
File
... mainly ______ and _____ (dirty snowball) as they orbit the Sun, material ________ forming the tail the tail _______ points away from the Sun Halley's comet orbits the Sun every ____ years (1986) Meteors and Meteorites Earth is bombarded everyday by _____ and ______ fragments from space w ...
... mainly ______ and _____ (dirty snowball) as they orbit the Sun, material ________ forming the tail the tail _______ points away from the Sun Halley's comet orbits the Sun every ____ years (1986) Meteors and Meteorites Earth is bombarded everyday by _____ and ______ fragments from space w ...
Today`s Powerpoint
... Globular clusters formed 12-14 billion years ago. Useful info for studying the history of the Milky Way Galaxy. ...
... Globular clusters formed 12-14 billion years ago. Useful info for studying the history of the Milky Way Galaxy. ...
DOC
... 6. I can describe planet types and give examples. 7. I can describe what a habitable zone is. 8. I can explain the Big Bang theory and the evidence for this theory. 9. I can recall that the Big Bang theory is the most scientifically accepted theory to explain the formation of the Universe. ...
... 6. I can describe planet types and give examples. 7. I can describe what a habitable zone is. 8. I can explain the Big Bang theory and the evidence for this theory. 9. I can recall that the Big Bang theory is the most scientifically accepted theory to explain the formation of the Universe. ...
Level 2 Earth and Space Science (91192) 2015
... Pleiades is known to us as Matariki, and is an open star cluster of over 1400 stars. Its appearance in the early morning sky marks the dawn of the Māori New Year. In this cluster there is a star named HD 23514, which has been observed with dust particles around it that are thought to be the beginnin ...
... Pleiades is known to us as Matariki, and is an open star cluster of over 1400 stars. Its appearance in the early morning sky marks the dawn of the Māori New Year. In this cluster there is a star named HD 23514, which has been observed with dust particles around it that are thought to be the beginnin ...
HS-ESS1-2 - Trimble County Schools
... A. What are Binary Stars? 1) How do most of them appear from Earth? 2) How are Astonomers able to identify them? B. What are Doppler Shifts? 1) Compare/Contrast blueshift and redshift. 2) How does speed affect it? C. What are two units of measure for long stellar distances? D Describe the apparent s ...
... A. What are Binary Stars? 1) How do most of them appear from Earth? 2) How are Astonomers able to identify them? B. What are Doppler Shifts? 1) Compare/Contrast blueshift and redshift. 2) How does speed affect it? C. What are two units of measure for long stellar distances? D Describe the apparent s ...
Stellar Evolution and the HR Diagram – Study Guide
... down to the white dwarfs region. 11. Hottest stars are ___Blue____ in color. Coolest stars are ____Red__ in color. 12. An object whose density is so great that even light cannot escape its gravity is known as ...
... down to the white dwarfs region. 11. Hottest stars are ___Blue____ in color. Coolest stars are ____Red__ in color. 12. An object whose density is so great that even light cannot escape its gravity is known as ...
Perseus (constellation)
Perseus, named after the Greek mythological hero Perseus, is a constellation in the northern sky. It was one of 48 listed by the 2nd-century astronomer Ptolemy and among the 88 modern constellations defined by the International Astronomical Union (IAU). It is located in the northern celestial hemisphere near several other constellations named after legends surrounding Perseus, including Andromeda to the west and Cassiopeia to the north. Perseus is also bordered by Aries and Taurus to the south, Auriga to the east, Camelopardalis to the north, and Triangulum to the west.The galactic plane of the Milky Way passes through Perseus but is mostly obscured by molecular clouds. The constellation's brightest star is the yellow-white supergiant Alpha Persei (also called Mirfak), which shines at magnitude 1.79. It and many of the surrounding stars are members of an open cluster known as the Alpha Persei Cluster. The best-known star, however, is Algol (Beta Persei), linked with ominous legends because of its variability, which is noticeable to the naked eye. Rather than being an intrinsically variable star, it is an eclipsing binary. Other notable star systems in Perseus include X Persei, a binary system containing a neutron star, and GK Persei, a nova that peaked at magnitude 0.2 in 1901. The Double Cluster, comprising two open clusters quite near each other in the sky, was known to the ancient Chinese. The constellation gives its name to the Perseus Cluster (Abell 426), a massive galaxy cluster located 250 million light-years from Earth. It hosts the radiant of the annual Perseids meteor shower—one of the most prominent meteor showers in the sky.