Session Two - A Sidewalk Astronomer in Charlottetown
... difference is that a star is a point of light, whereas a galaxy has a larger apparent surface area. The entire luminosity of the object is summed over it's area. The magnitude is then the same as a point source like a star emitting the luminosity. Therefore, large objects appear dimmer than stars th ...
... difference is that a star is a point of light, whereas a galaxy has a larger apparent surface area. The entire luminosity of the object is summed over it's area. The magnitude is then the same as a point source like a star emitting the luminosity. Therefore, large objects appear dimmer than stars th ...
HERE
... Spectral class O, B stars (rare, but very interesting): Giant, hot, bright, blue stars burn up quickly and die violently. Lifetime is only 1-10 million years. Spectral class A,F,G,K stars (like the Sun): Middle of the road habits. Orange, yellow or white in color. Typically will live for 1-20 bi ...
... Spectral class O, B stars (rare, but very interesting): Giant, hot, bright, blue stars burn up quickly and die violently. Lifetime is only 1-10 million years. Spectral class A,F,G,K stars (like the Sun): Middle of the road habits. Orange, yellow or white in color. Typically will live for 1-20 bi ...
Astro 1 & 100 Levine Homework Stars Name:____________________________
... Hottest ______ ______ ______ ______ ______ ______ Coolest Or, all have the same temperature ______________ Page 1 ! of !4 ...
... Hottest ______ ______ ______ ______ ______ ______ Coolest Or, all have the same temperature ______________ Page 1 ! of !4 ...
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 ...
Colour - Magnitude Diagram for M 45
... In blue, circle the most massive star/s on your Colour-Magnitude plot. In red, circle the least massive group of stars on the diagram. What is the source of fuel for all the stars shown on the diagram? Comment on the relative age of the stars. Are they young or old? How can you tell? 6. Look at the ...
... In blue, circle the most massive star/s on your Colour-Magnitude plot. In red, circle the least massive group of stars on the diagram. What is the source of fuel for all the stars shown on the diagram? Comment on the relative age of the stars. Are they young or old? How can you tell? 6. Look at the ...
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 ...
THE LIFE CYCLE OF A STAR
... They burn very slowly and have estimated lifetimes of 100 billion years. Proxima Centauri and Barnard's Star are red dwarfs. ...
... They burn very slowly and have estimated lifetimes of 100 billion years. Proxima Centauri and Barnard's Star are red dwarfs. ...
Star Life Cycle
... When a star has burned between 10% and 20% of its hydrogen, its core will to run out of fuel. At this stage, the star is entering the end of its life. The diameter of the star can increase by a factor of 200, while its cooling is translated into a reddening of its radiation : the star is becoming wh ...
... When a star has burned between 10% and 20% of its hydrogen, its core will to run out of fuel. At this stage, the star is entering the end of its life. The diameter of the star can increase by a factor of 200, while its cooling is translated into a reddening of its radiation : the star is becoming wh ...
H-R diagram worksheet
... 12. A red giant the same color as D and the same brightness as B labeled G 13. A white dwarf the same color as B and the same brightness as D labeled wd ...
... 12. A red giant the same color as D and the same brightness as B labeled G 13. A white dwarf the same color as B and the same brightness as D labeled wd ...
Watch the episode titled “The Milky Way” from the series “The
... About how many times has our solar system been orbited around the Milky Way? Where is our galaxy headed? ...
... About how many times has our solar system been orbited around the Milky Way? Where is our galaxy headed? ...
EM review
... The observed brightness of a star is given by its apparent magnitude. (First devised by Hipparchus who made a catalogue of about 850) The brightest stars: m=1. Dimmest stars (visible to the naked eye) m=6. The magnitude scale has been shown to be logarithmic, with a difference of 5 orders of magn ...
... The observed brightness of a star is given by its apparent magnitude. (First devised by Hipparchus who made a catalogue of about 850) The brightest stars: m=1. Dimmest stars (visible to the naked eye) m=6. The magnitude scale has been shown to be logarithmic, with a difference of 5 orders of magn ...
Stars - TeacherWeb
... Life span of a star depends on its size. – Very large, massive stars burn their fuel much faster than smaller stars – Their main sequence may last only a few hundred thousand years – Smaller stars will live on for billions of years because they burn their fuel much more slowly ...
... Life span of a star depends on its size. – Very large, massive stars burn their fuel much faster than smaller stars – Their main sequence may last only a few hundred thousand years – Smaller stars will live on for billions of years because they burn their fuel much more slowly ...
Due April 2 - Department of Physics and Astronomy
... 3. Why do sunspots appear darker than their surroundings? (a) They are cooler than their surroundings. (b) They block some sunlight. (c) They do not emit any light. 4. If the star Alpha Centauri were moved to a distance 10 times greater than its actual distance, its parallax angle would (a) get larg ...
... 3. Why do sunspots appear darker than their surroundings? (a) They are cooler than their surroundings. (b) They block some sunlight. (c) They do not emit any light. 4. If the star Alpha Centauri were moved to a distance 10 times greater than its actual distance, its parallax angle would (a) get larg ...
Topic E: Astrophysics E1 Introduction to the Universe.
... - Navigate to the "Observable Universe" tab at the top. Zoom in to the Earth on the far left and work your way to the right. Notice that the Milky Way is that band of white that you see in the night sky. When you get to the "Local Galactic Group" try and find Ursa Minor and Ursa Major. You probably ...
... - Navigate to the "Observable Universe" tab at the top. Zoom in to the Earth on the far left and work your way to the right. Notice that the Milky Way is that band of white that you see in the night sky. When you get to the "Local Galactic Group" try and find Ursa Minor and Ursa Major. You probably ...
Notes on Precession in Astronomy
... and planets on the unevenly distributed mass of the Earth. The Earth slowly wobbles, much as a top, or gyroscope, does when spun. This wobble is called the Earth's Precession. ...
... and planets on the unevenly distributed mass of the Earth. The Earth slowly wobbles, much as a top, or gyroscope, does when spun. This wobble is called the Earth's Precession. ...
Stars and Constellations
... how stars evolve. Lead students to understand the difference between apparent magnitude and absolute magnitude. Showing a flashlight at varying distances is a concrete means of demonstrating the difference. 2) Have students construct simple astrolabes using drinking straws, washers, string and protr ...
... how stars evolve. Lead students to understand the difference between apparent magnitude and absolute magnitude. Showing a flashlight at varying distances is a concrete means of demonstrating the difference. 2) Have students construct simple astrolabes using drinking straws, washers, string and protr ...
Orion- The Swordsman of the Sky - A Winter Constellation from the
... which consists of four stars, approximately the same brightness in a box shape. This object ...
... which consists of four stars, approximately the same brightness in a box shape. This object ...
Tour of the Galaxy - Shelbyville Central Schools
... The Coma Cluster of Galaxies Almost every object in the above photograph is a galaxy. The Coma Cluster of Galaxies contains thousands of galaxies. Each of these galaxies houses billions of stars - just as our own Milky Way Galaxy does. Light from the Coma Cluster takes hundreds of millions of years ...
... The Coma Cluster of Galaxies Almost every object in the above photograph is a galaxy. The Coma Cluster of Galaxies contains thousands of galaxies. Each of these galaxies houses billions of stars - just as our own Milky Way Galaxy does. Light from the Coma Cluster takes hundreds of millions of years ...
Star- large ball of gas held together by large ball of gas held
... 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, and then black dwarfs. For stars larger than our sun, after main sequence and giant s ...
... 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, and then black dwarfs. For stars larger than our sun, after main sequence and giant s ...
presentation source
... • Disperse their cocoon to become visible. • Typically form in clusters, dominated by light from 1-2 brightest members. GENS4001 1999-X1 ...
... • Disperse their cocoon to become visible. • Typically form in clusters, dominated by light from 1-2 brightest members. GENS4001 1999-X1 ...
Denton ISD
... b. low in brightness but high in temperature c. average brightness and average in temperature d. average in brightness but high in temperature ...
... b. low in brightness but high in temperature c. average brightness and average in temperature d. average in brightness but high in temperature ...
What is a Red Shift?
... humans. Describe some situations where the sun helps us as humans, with our community, and our way of living. ...
... humans. Describe some situations where the sun helps us as humans, with our community, and our way of living. ...
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.