Life Cycles of Stars
... • Supergiants that run out of fuel end in a massive explosion • Many nuclear fusion reactions occur and new elements form and explode into space • The debris from the explosion is the source for a new nebula • What remains of the star depends on the original size of the star ...
... • Supergiants that run out of fuel end in a massive explosion • Many nuclear fusion reactions occur and new elements form and explode into space • The debris from the explosion is the source for a new nebula • What remains of the star depends on the original size of the star ...
NASA Space Place
... example of this phenomenon. At a distance of 7,100 light years away in the constellation of Cassiopeia, a molecular gas cloud is actively forming stars, including the massive Oclass star BD+60 2522, which itself is a magnitude +8.7 star despite its great distance and its presence in a dusty region o ...
... example of this phenomenon. At a distance of 7,100 light years away in the constellation of Cassiopeia, a molecular gas cloud is actively forming stars, including the massive Oclass star BD+60 2522, which itself is a magnitude +8.7 star despite its great distance and its presence in a dusty region o ...
LAB #6 - GEOCITIES.ws
... regions. Thus a high B magnitude compared to the star’s V magnitude means that an object is giving off very LITTLE blue light compared to the total amount of light it is giving off (recall that magnitudes are a “backwards” scale). If this is the case, the (B-V) index is a POSITIVE number, and it ind ...
... regions. Thus a high B magnitude compared to the star’s V magnitude means that an object is giving off very LITTLE blue light compared to the total amount of light it is giving off (recall that magnitudes are a “backwards” scale). If this is the case, the (B-V) index is a POSITIVE number, and it ind ...
FINAL EXAM Name: ASTRONOMY II - 79202 Spring 1995
... to the known value of the sun’s age. Assume 1% efficiency to convert gravitational potential energy to luminosity. ...
... to the known value of the sun’s age. Assume 1% efficiency to convert gravitational potential energy to luminosity. ...
Astronomy Exam review
... 39. The seasons on Earth are a direct consequence of the _______ 40. Planets are most easily distinguised from stars in the night time sky with your eye, because they 41.The _____ planets are characterized by deep atmospheres, many satellites, and a solar-like elemental abundance. 42.The _____ plane ...
... 39. The seasons on Earth are a direct consequence of the _______ 40. Planets are most easily distinguised from stars in the night time sky with your eye, because they 41.The _____ planets are characterized by deep atmospheres, many satellites, and a solar-like elemental abundance. 42.The _____ plane ...
April - Bristol Astronomical Society
... originally the name for the southern dog itself, with the northern called "Asterion". But with the brighter of the stars that make the southern dog called "Cor Caroli,” Beta CVn got the name to itself. Chara is very similar to the Sun, at a distance of 27 light years it gives us a good indication of ...
... originally the name for the southern dog itself, with the northern called "Asterion". But with the brighter of the stars that make the southern dog called "Cor Caroli,” Beta CVn got the name to itself. Chara is very similar to the Sun, at a distance of 27 light years it gives us a good indication of ...
Unit 10 H-R Diagram Worksheet
... YELLOW and RED SUPERGIANTS. When SUPERGIANTS reach old age, they go kablooey in a blaze of glory called a supernova. Very exciting. 5. As MAIN SEQUENCE stars reach old age, they swell and cool to become RED GIANTS. When RED GIANTS run out of hydrogen fuel, they shrink, get hotter and become WHITE DW ...
... YELLOW and RED SUPERGIANTS. When SUPERGIANTS reach old age, they go kablooey in a blaze of glory called a supernova. Very exciting. 5. As MAIN SEQUENCE stars reach old age, they swell and cool to become RED GIANTS. When RED GIANTS run out of hydrogen fuel, they shrink, get hotter and become WHITE DW ...
ASTR2050 Spring 2005 • In this class we will cover: Brief review
... Greek letter (in order of brightness) then constellation e.g. α-Orionis is brightest star in Orion (aka Betelgeuse) δ-Cephei is fourth brightest star in Cepheus Variable stars Listed in order of discovery, starting with “R”, then “S” and on through “Z”, then “RR..RZ...SS...SZ...ZZ”, and then “AA...A ...
... Greek letter (in order of brightness) then constellation e.g. α-Orionis is brightest star in Orion (aka Betelgeuse) δ-Cephei is fourth brightest star in Cepheus Variable stars Listed in order of discovery, starting with “R”, then “S” and on through “Z”, then “RR..RZ...SS...SZ...ZZ”, and then “AA...A ...
Which property of a star would not change if we could observe it
... • A star emits light in all directions, like a light bulb. We see the photons that are heading in our direction • As you move away from the star, fewer and fewer photons are heading directly for us, so the star seems to ...
... • A star emits light in all directions, like a light bulb. We see the photons that are heading in our direction • As you move away from the star, fewer and fewer photons are heading directly for us, so the star seems to ...
Space Science Distance Definitions
... means of measuring the luminosity of a star should find the same value. However, apparent brightness is not an intrinsic property of the star; it depends on your location. • Why do light sources appear fainter as a function of distance? The reason is that as light travels towards you, it is spreadin ...
... means of measuring the luminosity of a star should find the same value. However, apparent brightness is not an intrinsic property of the star; it depends on your location. • Why do light sources appear fainter as a function of distance? The reason is that as light travels towards you, it is spreadin ...
Out of this World
... travelling around another. - It takes the Earth one year to travel, or revolve, in a circle around the Sun counter-clockwise. - This motion allows us to see different constellations during different seasons. ...
... travelling around another. - It takes the Earth one year to travel, or revolve, in a circle around the Sun counter-clockwise. - This motion allows us to see different constellations during different seasons. ...
Distance to Stars
... km/s – 1 light year = the distance a ray of light travels in 1 year. 9.5 trillion km. Horsehead Nebula is 1,500 light years away) ...
... km/s – 1 light year = the distance a ray of light travels in 1 year. 9.5 trillion km. Horsehead Nebula is 1,500 light years away) ...
Stellar evolution
... - First occurs in a runaway process: "the helium flash". Energy from fusion goes into re-expanding and cooling the core. This slows fusion, so star gets dimmer again. - Then stable He -> C burning. Still have H -> He shell burning surrounding it. ...
... - First occurs in a runaway process: "the helium flash". Energy from fusion goes into re-expanding and cooling the core. This slows fusion, so star gets dimmer again. - Then stable He -> C burning. Still have H -> He shell burning surrounding it. ...
Place the stars in the proper sequence, following the
... Along the main sequence, stars of greater magnitude are hotter (have more energy) c. How is a star’s luminosity related to its energy? For main-sequence stars, the luminosity increases with temperature. For the giants and super-giants, large (high magnitude) and luminous stars are actually quite coo ...
... Along the main sequence, stars of greater magnitude are hotter (have more energy) c. How is a star’s luminosity related to its energy? For main-sequence stars, the luminosity increases with temperature. For the giants and super-giants, large (high magnitude) and luminous stars are actually quite coo ...
Galactic Address/Stars/Constellations
... What is a star? • A star is an object in space that produces its own light and heat through nuclear ...
... What is a star? • A star is an object in space that produces its own light and heat through nuclear ...
Astronomy Campus Assessment
... younger than our star, the sun. C. The star is composed of H, He, and Lithium meaning it is a fairly young star that is starting to fuse heavier elements D. The star is composed only of H and He meaning it is relatively young and most likely part of the Main sequence like our sun. ...
... younger than our star, the sun. C. The star is composed of H, He, and Lithium meaning it is a fairly young star that is starting to fuse heavier elements D. The star is composed only of H and He meaning it is relatively young and most likely part of the Main sequence like our sun. ...
No Slide Title
... Tiny and dense remains of the a star’s core. Left behind after the outer layers were blown ...
... Tiny and dense remains of the a star’s core. Left behind after the outer layers were blown ...
Magnitude scale theory
... Consider two stars A and B. Star A appears to be brighter than star B. In other words the intensity of the light reaching the observer from star A is greater than that from star B. ...
... Consider two stars A and B. Star A appears to be brighter than star B. In other words the intensity of the light reaching the observer from star A is greater than that from star B. ...
Galaxies - Where Science Meets Life
... light from distant galaxies. The red shift indicates that the stars are moving away from a central point in the universe at a certain speed. This supports the theory of the Big Bang in that the universe started from a ...
... light from distant galaxies. The red shift indicates that the stars are moving away from a central point in the universe at a certain speed. This supports the theory of the Big Bang in that the universe started from a ...
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.