Evolution Cycle of Stars
... • White dwarfs have a mass similar to that of the Sun, but only 1% of the Sun's diameter; approximately the diameter of the Earth. The surface temperature of a white dwarf is 8000C or more, but being smaller than the Sun their overall luminosity's are 1% of the Sun or less. • White dwarfs are the sh ...
... • White dwarfs have a mass similar to that of the Sun, but only 1% of the Sun's diameter; approximately the diameter of the Earth. The surface temperature of a white dwarf is 8000C or more, but being smaller than the Sun their overall luminosity's are 1% of the Sun or less. • White dwarfs are the sh ...
Sample final exam
... 18. Two binary stars, each with a mass of 0.5 solar masses, orbit each other. Each has a semi-major axis of its orbit of 1.0 AU. What is the period (in years) of these stars? Essay section part one — Choose two of the following questions, and answer them in paragraph style or with drawings, as the ...
... 18. Two binary stars, each with a mass of 0.5 solar masses, orbit each other. Each has a semi-major axis of its orbit of 1.0 AU. What is the period (in years) of these stars? Essay section part one — Choose two of the following questions, and answer them in paragraph style or with drawings, as the ...
Astro 210 Lecture 4 Sept. 4, 2013 Announcements: • PS 1 available
... most of the rest: cooler but more luminous: “giants” Q: how do we know they are giant? a rare few: hot but luminous: “supergiants” not rare but dim and hard to find: very hot but very low-L objects: “white dwarfs” Q: how do we know they are teeny? ...
... most of the rest: cooler but more luminous: “giants” Q: how do we know they are giant? a rare few: hot but luminous: “supergiants” not rare but dim and hard to find: very hot but very low-L objects: “white dwarfs” Q: how do we know they are teeny? ...
Geology Lab Final Exam
... 11. Our sun is considered a ____________ type star and is classified in the _______ spectral class a. red giant/M2 b. main sequence/B3 c. white dwarf/A6 d. main sequence/G2 12. Apparent magnitude measures a. the actual brightness of a star c. the star brightness viewed from earth ...
... 11. Our sun is considered a ____________ type star and is classified in the _______ spectral class a. red giant/M2 b. main sequence/B3 c. white dwarf/A6 d. main sequence/G2 12. Apparent magnitude measures a. the actual brightness of a star c. the star brightness viewed from earth ...
part 2 - Stardome
... se lap col stars can remnants. The core of the or black holes. stars but contain smaller than white dwarf Neutron stars are even massive star. re mo a e they form from much more mass becaus ual ivid ind e forc rs sta se the of The pressure in the core ns to ctro ele e fus themselves and atoms to col ...
... se lap col stars can remnants. The core of the or black holes. stars but contain smaller than white dwarf Neutron stars are even massive star. re mo a e they form from much more mass becaus ual ivid ind e forc rs sta se the of The pressure in the core ns to ctro ele e fus themselves and atoms to col ...
Prep/Review Questions - Faculty Web Sites at the University
... To add visual interest, stage productions and movies often show a full Moon near the horizon, regardless of the ostensible time of night. At what times of night can this happen in real life? In a new Tom Hanks "Castaway" sequel, the hero finds the latitude of his lonely island by determining the max ...
... To add visual interest, stage productions and movies often show a full Moon near the horizon, regardless of the ostensible time of night. At what times of night can this happen in real life? In a new Tom Hanks "Castaway" sequel, the hero finds the latitude of his lonely island by determining the max ...
Stars - Red, Blue, Old, New pt.3
... • About 500 stars are known to have one or more planets; many more discoveries ahead. • Stellar evolution rates depend on mass. More massive=faster • Stars move off the main sequence in response to changes in energy source and become giants or supergiants. ...
... • About 500 stars are known to have one or more planets; many more discoveries ahead. • Stellar evolution rates depend on mass. More massive=faster • Stars move off the main sequence in response to changes in energy source and become giants or supergiants. ...
word document - FacStaff Home Page for CBU
... _____ e) The sun will probably go supernova sometime, probably in about 5.5 billion years. _____ f) Vega is a star that has a stellar classification of A0 V. From this we can infer that Vega is more massive than the sun. _____ g) The heaviest elements (gold, lead, uranium, etc.) are thought to be ma ...
... _____ e) The sun will probably go supernova sometime, probably in about 5.5 billion years. _____ f) Vega is a star that has a stellar classification of A0 V. From this we can infer that Vega is more massive than the sun. _____ g) The heaviest elements (gold, lead, uranium, etc.) are thought to be ma ...
Astronomy ANSWER KEY KEEP SECURE
... shown in the image above? Mira, Omicron-ceti 8. Which letter in the picture best approximates the location of material that was ejected from the surface of this star 20,000 years ago? (Local time frame of reference.) B, according to Dr. Robert Hurt, Hidden Universe Showcase, the entire tail represen ...
... shown in the image above? Mira, Omicron-ceti 8. Which letter in the picture best approximates the location of material that was ejected from the surface of this star 20,000 years ago? (Local time frame of reference.) B, according to Dr. Robert Hurt, Hidden Universe Showcase, the entire tail represen ...
Stellar Evolution
... The star expands to larger than it ever was during its lifetime a few to about a hundred times bigger. ...
... The star expands to larger than it ever was during its lifetime a few to about a hundred times bigger. ...
Astronomy and Space articles
... The Brightest Star in the Night Sky Since writing recently about the first star to become visible in the evenings, which at this time of the year is Sirius, I have had a few questions about that star, and why it is so bright. Sirius is a brilliant star, visible high in our northern evening sky. It i ...
... The Brightest Star in the Night Sky Since writing recently about the first star to become visible in the evenings, which at this time of the year is Sirius, I have had a few questions about that star, and why it is so bright. Sirius is a brilliant star, visible high in our northern evening sky. It i ...
PDF version (two pages, including the full text)
... Southern Cross and the Pointers (Alpha and Beta Centauri). Alpha Centauri is a triple system, with two sun like stars orbiting each other every 80 years and a dim red dwarf tagging along at a much larger distance. This star was discovered by Robert Innes at the Union Observatory in Johannesburg in 1 ...
... Southern Cross and the Pointers (Alpha and Beta Centauri). Alpha Centauri is a triple system, with two sun like stars orbiting each other every 80 years and a dim red dwarf tagging along at a much larger distance. This star was discovered by Robert Innes at the Union Observatory in Johannesburg in 1 ...
Chapter 19 Star Formation
... Some fragments are too small for fusion ever to begin. They gradually cool off and become dark “clinkers.” A protostar must have 0.08 the mass of the Sun (which is 80 times the mass of Jupiter) in order to become dense and hot enough that fusion can begin. If the mass of the “failed star” is about ...
... Some fragments are too small for fusion ever to begin. They gradually cool off and become dark “clinkers.” A protostar must have 0.08 the mass of the Sun (which is 80 times the mass of Jupiter) in order to become dense and hot enough that fusion can begin. If the mass of the “failed star” is about ...
File
... Example: The first star to be measured this way was a star in the constellation of Cygnus. The angular difference was found to be 0.292 arcseconds. This gives a distance of 3.48 pc, or 11.36 light years ...
... Example: The first star to be measured this way was a star in the constellation of Cygnus. The angular difference was found to be 0.292 arcseconds. This gives a distance of 3.48 pc, or 11.36 light years ...
Space Unit - Questions and Answers
... 9. What planet(s) in our solar system are terrestrial? Mercury, Venus, Earth and Mars are the four planets closest to the Sun. They are also known as the inner planets and are composed mainly of rocky material and metals. The outer planets are Jupiter, Saturn, Uranus and Neptune and are also known a ...
... 9. What planet(s) in our solar system are terrestrial? Mercury, Venus, Earth and Mars are the four planets closest to the Sun. They are also known as the inner planets and are composed mainly of rocky material and metals. The outer planets are Jupiter, Saturn, Uranus and Neptune and are also known a ...
Star Types - University of Massachusetts Amherst
... How may a star’s luminosity be inferred? How may a star’s Temperature be inferred? How may a stsar’s distance be inferred Parallax as a measure of distance: how does the parallax of a star depend on its distance? How may a star’s radius be inferred? ...
... How may a star’s luminosity be inferred? How may a star’s Temperature be inferred? How may a stsar’s distance be inferred Parallax as a measure of distance: how does the parallax of a star depend on its distance? How may a star’s radius be inferred? ...
Name:
... Turn the sky map so that you are now facing the direction WEST. Adjust the sky map appropriately. (Put “WEST” at the bottom.) What “great” constellation can you find about halfway up in the western sky? 6)___________________, the Flying Horse. Extending upward from this pattern and stretching toward ...
... Turn the sky map so that you are now facing the direction WEST. Adjust the sky map appropriately. (Put “WEST” at the bottom.) What “great” constellation can you find about halfway up in the western sky? 6)___________________, the Flying Horse. Extending upward from this pattern and stretching toward ...
Nov - Wadhurst Astronomical Society
... in Cassiopeia to point to the “sword handle” in Perseus as shown in the above chart. From the star on the extreme left of Andromeda, draw a line in the general direction of the horizon that makes a 60º angle with Andromeda itself. This line will pass through Triangulum and then Aries. Drawing a lin ...
... in Cassiopeia to point to the “sword handle” in Perseus as shown in the above chart. From the star on the extreme left of Andromeda, draw a line in the general direction of the horizon that makes a 60º angle with Andromeda itself. This line will pass through Triangulum and then Aries. Drawing a lin ...
Document
... Romans observed patterns of stars in the sky. • They imagined that the constellations represented mythological creatures. • In reality the stars in a constellation may not be near each other. ...
... Romans observed patterns of stars in the sky. • They imagined that the constellations represented mythological creatures. • In reality the stars in a constellation may not be near each other. ...
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.