PowerPoint - Star Life Cycle
... Which of the following best describes the category in which the Sun would be placed? A. blue supergiant stars B. red giant stars C. yellow main sequence stars D. white dwarf stars ...
... Which of the following best describes the category in which the Sun would be placed? A. blue supergiant stars B. red giant stars C. yellow main sequence stars D. white dwarf stars ...
dtu7ech11 - Fort Thomas Independent Schools
... masses. Mass, luminosity, and surface temperature of main-sequence stars ...
... masses. Mass, luminosity, and surface temperature of main-sequence stars ...
Astronomy Study Guide
... Apparent brightness—the brightness of a star as seen from Earth Absolute brightness—a star’s brightness as if it were a standard distance from Earth Constellation—an imaginary pattern of stars (example—Orion) Hertzsprung - Russell diagram (H-R diagram)—a graph of stars showing surface temperature on ...
... Apparent brightness—the brightness of a star as seen from Earth Absolute brightness—a star’s brightness as if it were a standard distance from Earth Constellation—an imaginary pattern of stars (example—Orion) Hertzsprung - Russell diagram (H-R diagram)—a graph of stars showing surface temperature on ...
The Night Sky This Month - Usk Astronomical Society
... Saturn is in Ophiuchus throughout October and appears low in the south-west as the Sun sets and as it moves towards conjunction at the end of November; it is way past its best. By the end of the month, Saturn is only 8° above the horizon at sunset so observe Saturn as soon as you can this month, in ...
... Saturn is in Ophiuchus throughout October and appears low in the south-west as the Sun sets and as it moves towards conjunction at the end of November; it is way past its best. By the end of the month, Saturn is only 8° above the horizon at sunset so observe Saturn as soon as you can this month, in ...
DSLR photometry - British Astronomical Association
... The accumulated charge in each pixel from photons that were captured is measured. CCDs are very sensitive, respond to light over a wide range of wavelengths and can measure many stars at once, as compared to photomultiplier tubes which only measure one star at a time. ...
... The accumulated charge in each pixel from photons that were captured is measured. CCDs are very sensitive, respond to light over a wide range of wavelengths and can measure many stars at once, as compared to photomultiplier tubes which only measure one star at a time. ...
Stellar Evolution Lab
... Stage 1- Stars are born in clouds of gas and dust called Nebulas. Stage 2- The gas and dust spiral together and contract under their own gravity. The gas and dust will begin to heat up and start to glow forming Protostars. Stage 3- If a protostar contains enough matter, the central temperature will ...
... Stage 1- Stars are born in clouds of gas and dust called Nebulas. Stage 2- The gas and dust spiral together and contract under their own gravity. The gas and dust will begin to heat up and start to glow forming Protostars. Stage 3- If a protostar contains enough matter, the central temperature will ...
Lecture 5
... Mass-Luminosity Relation for MainSequence Stars • Main sequence stars are stars like the Sun but with different masses • The mass-luminosity relation expresses a direct correlation between mass and luminosity for main-sequence stars • The greater the mass of a main-sequence star, the greater its lu ...
... Mass-Luminosity Relation for MainSequence Stars • Main sequence stars are stars like the Sun but with different masses • The mass-luminosity relation expresses a direct correlation between mass and luminosity for main-sequence stars • The greater the mass of a main-sequence star, the greater its lu ...
PHYSICS 113 Practice Questions #2
... c. whether it is loca ted on the o uter regions o r the central reg ions of the mo lecular cloud that gave it birth d. the speed and direction of its rotation e. the size of the d isk around it 15. Why do all stars spend most of their lives on the main sequence? a. because the neutrinos created insi ...
... c. whether it is loca ted on the o uter regions o r the central reg ions of the mo lecular cloud that gave it birth d. the speed and direction of its rotation e. the size of the d isk around it 15. Why do all stars spend most of their lives on the main sequence? a. because the neutrinos created insi ...
The Northern sky - Visit Isle of Man
... nine first magnitude stars (brightest stars) can be seen very easily. The winter sky also shows the Milky Way in all its glory, stretching from the left hand side of Orion, through Gemini and Cassiopeia to the north western horizon. ...
... nine first magnitude stars (brightest stars) can be seen very easily. The winter sky also shows the Milky Way in all its glory, stretching from the left hand side of Orion, through Gemini and Cassiopeia to the north western horizon. ...
Week 6
... 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? ...
... 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? ...
Chapter14- Our Galaxy - SFA Physics and Astronomy
... Gravitational forces in molecular clouds collect molecules into dense cores, eventually becoming protostars. ...
... Gravitational forces in molecular clouds collect molecules into dense cores, eventually becoming protostars. ...
Double Stars in Scorpio`s Claws
... stars that are a rewarding challenge to any astronomer. Some of these are actual double stars (pairs of stars that orbit about each other), others are ‘apparent doubles’ – stars that simply lie along the same line of sight, but are very distant from each other in space. The map below indicates the l ...
... stars that are a rewarding challenge to any astronomer. Some of these are actual double stars (pairs of stars that orbit about each other), others are ‘apparent doubles’ – stars that simply lie along the same line of sight, but are very distant from each other in space. The map below indicates the l ...
Stellar evolution, II
... 6) white dwarf phase (will last for billions and billions of years, as the only the thing the Sun can do is to cool down; Sun's mass will be about 0.6 of its present ...
... 6) white dwarf phase (will last for billions and billions of years, as the only the thing the Sun can do is to cool down; Sun's mass will be about 0.6 of its present ...
BV Color Index and Temperature - The University of Texas at Dallas
... • B-V color index way of quantifying this - determining spectral class using two different filters Ø one a blue (B) filter that only lets a narrow range of colors or wavelengths through centered on the blue colors, Ø and a “visual” (V) filter that only lets the wavelengths close to the ...
... • B-V color index way of quantifying this - determining spectral class using two different filters Ø one a blue (B) filter that only lets a narrow range of colors or wavelengths through centered on the blue colors, Ø and a “visual” (V) filter that only lets the wavelengths close to the ...
30-2 Directed Reading
... increases as the mass of an object a. decreases or as the distance between two objects decreases. b. increases or as the distance between two objects increases. c. increases or as the distance between two objects decreases. d. decreases or as the distance between two objects increases. 8. What happe ...
... increases as the mass of an object a. decreases or as the distance between two objects decreases. b. increases or as the distance between two objects increases. c. increases or as the distance between two objects decreases. d. decreases or as the distance between two objects increases. 8. What happe ...
Integrative Studies 410 Our Place in the Universe
... – Example: Star with 4L and 3M uses 4 times more mass for energy production, but has 3 times more mass, so its life time is a factor ¾=0.75 compared to the sun: 7.5 billion years ([0.75] goes in the box) ...
... – Example: Star with 4L and 3M uses 4 times more mass for energy production, but has 3 times more mass, so its life time is a factor ¾=0.75 compared to the sun: 7.5 billion years ([0.75] goes in the box) ...
PDF version (two pages, including the full text)
... the zenith is the Scorpion, with the reddish star Antares at its heart. Antares (or 'rival of Mars') is a huge star 600 light years away, shining in visible light with 12000 times the power output of our own sun. But Antares is also so much cooler than the sun (hence the red colour) that most of its ...
... the zenith is the Scorpion, with the reddish star Antares at its heart. Antares (or 'rival of Mars') is a huge star 600 light years away, shining in visible light with 12000 times the power output of our own sun. But Antares is also so much cooler than the sun (hence the red colour) that most of its ...
distance to the centre of the Milky Way.
... way out from the very centre of a huge stellar system, now known to be about 100,000 light years in diameter. Note that Shapley actually overestimated the distances somewhat, because he didn’t fully understand the effects of the obscuring dust. But this changed understanding was still absolutely cor ...
... way out from the very centre of a huge stellar system, now known to be about 100,000 light years in diameter. Note that Shapley actually overestimated the distances somewhat, because he didn’t fully understand the effects of the obscuring dust. But this changed understanding was still absolutely cor ...
The Life Cycle of Stars Webquest
... 1. Learn how to identify stars by their magnitude, color, temperature, and spectral class. 2. Investigate the process of nuclear fusion explained by Einstein's famous equation E = mc2 and learn how mass in the form of hydrogen atoms is converted to helium and causes a release of energy that makes st ...
... 1. Learn how to identify stars by their magnitude, color, temperature, and spectral class. 2. Investigate the process of nuclear fusion explained by Einstein's famous equation E = mc2 and learn how mass in the form of hydrogen atoms is converted to helium and causes a release of energy that makes st ...
Stellar Evolution Test Answers
... 1. When the light from a distant galaxy is distorted by a black hole, the resulting image is a ring. We call this a) the photon sphere b) the event horizon c) gravitational lensing d) the cosmological principle 2. Once you cross the ____________________, there is no going back…light can no longer es ...
... 1. When the light from a distant galaxy is distorted by a black hole, the resulting image is a ring. We call this a) the photon sphere b) the event horizon c) gravitational lensing d) the cosmological principle 2. Once you cross the ____________________, there is no going back…light can no longer es ...
Corona Australis
Corona Australis /kɵˈroʊnə ɒˈstreɪlɨs/ or Corona Austrina /kɵˈroʊnə ɒˈstraɪnə/ is a constellation in the Southern Celestial Hemisphere. Its Latin name means ""southern crown"", and it is the southern counterpart of Corona Borealis, the northern crown. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The Ancient Greeks saw Corona Australis as a wreath rather than a crown and associated it with Sagittarius or Centaurus. Other cultures have likened the pattern to a turtle, ostrich nest, a tent, or even a hut belonging to a rock hyrax.Although fainter than its namesake, the oval- or horseshoe-shaped pattern of its brighter stars renders it distinctive. Alpha and Beta Coronae Australis are the two brightest stars with an apparent magnitude of around 4.1. Epsilon Coronae Australis is the brightest example of a W Ursae Majoris variable in the southern sky. Lying alongside the Milky Way, Corona Australis contains one of the closest star-forming regions to our Solar System—a dusty dark nebula known as the Corona Australis Molecular Cloud, lying about 430 light years away. Within it are stars at the earliest stages of their lifespan. The variable stars R and TY Coronae Australis light up parts of the nebula, which varies in brightness accordingly.