Stellar Evolution Before…..During……and After…. The Main
... •Greater pressure is required to balance higher gravitational force due to higher mass. •Greater pressure produces higher temperature (and reaches this faster). •Higher temperature produces greater luminosity. •Higher luminosity leads to faster fuel consumption. •Faster fuel usage means high-mass st ...
... •Greater pressure is required to balance higher gravitational force due to higher mass. •Greater pressure produces higher temperature (and reaches this faster). •Higher temperature produces greater luminosity. •Higher luminosity leads to faster fuel consumption. •Faster fuel usage means high-mass st ...
Star Formation
... • Photons exert a slight amount of pressure when they strike matter • Very massive stars are so luminous that the collective pressure of photons drives their matter into space ...
... • Photons exert a slight amount of pressure when they strike matter • Very massive stars are so luminous that the collective pressure of photons drives their matter into space ...
The Birth of Stars
... the reddish emission nebulae called H II regions • Ultraviolet radiation and stellar winds from the O and B stars at the core of an H II region create shock waves that move outward through the gas cloud, compressing the gas and triggering the formation of more protostars ...
... the reddish emission nebulae called H II regions • Ultraviolet radiation and stellar winds from the O and B stars at the core of an H II region create shock waves that move outward through the gas cloud, compressing the gas and triggering the formation of more protostars ...
The Birth of Stars Guiding Questions • Because stars shine by
... Clumps of glowing gas called Herbig-Haro objects are sometimes found along these jets and at their ends ...
... Clumps of glowing gas called Herbig-Haro objects are sometimes found along these jets and at their ends ...
BV Color Index and Temperature - The University of Texas at Dallas
... Stars are produced in dense nebulae in which much of the hydrogen is in the molecular (H2) form, so these nebulae are called molecular clouds. The largest such formations are called giant molecular clouds. ...
... Stars are produced in dense nebulae in which much of the hydrogen is in the molecular (H2) form, so these nebulae are called molecular clouds. The largest such formations are called giant molecular clouds. ...
Mechanical Systems Topics 1 and 2
... The ancient Greeks studied the stars and the celestial bodies. They had a word that meant ‘wanderer’ to describe a celestial body that changed its position in the sky. ‘Wanderer’ is the origin for the word A. Comet B. Asteroid C. Star D. Planet ...
... The ancient Greeks studied the stars and the celestial bodies. They had a word that meant ‘wanderer’ to describe a celestial body that changed its position in the sky. ‘Wanderer’ is the origin for the word A. Comet B. Asteroid C. Star D. Planet ...
and Concept Self-test (1,2,3,5,6,7,8,9)
... diameter is much bigger and, although the amount of energy is still the same, it is spread over a greater surface area, creating a cooler “Red Giant” star. 6. The Sun will reach a diameter of about 0.6 AU when it enters the red-giant branch. ...
... diameter is much bigger and, although the amount of energy is still the same, it is spread over a greater surface area, creating a cooler “Red Giant” star. 6. The Sun will reach a diameter of about 0.6 AU when it enters the red-giant branch. ...
Skylights - May 2017 - Astronomical Society of Northern New England
... times larger than our sun and probably has at least one Jupiter-sized planet orbiting around it. Pioneer 10, our first deep-space probe launched in 1972, will pass fairly close to this star in about 2 million years if no one intercepts it before then. So when you look at these two orange objects in ...
... times larger than our sun and probably has at least one Jupiter-sized planet orbiting around it. Pioneer 10, our first deep-space probe launched in 1972, will pass fairly close to this star in about 2 million years if no one intercepts it before then. So when you look at these two orange objects in ...
Lifecycle of the stars.
... hydrogen nuclei smash each other together at high speeds. Then the hydrogen nuclei stick together to make a large nucleus. last, big amounts of energy (fusion is only caused in the sun and in fission bombs aka H-bombs) ...
... hydrogen nuclei smash each other together at high speeds. Then the hydrogen nuclei stick together to make a large nucleus. last, big amounts of energy (fusion is only caused in the sun and in fission bombs aka H-bombs) ...
The Death of Stars
... rich with heavy elements. • Perhaps the most famous is the “Crab Nebula” from a supernova in 1054 AD. It was so bright, Chinese, Japanese, and Arab astronomers saw it for months during the day, and could be seen for 2 years at night. • The remnant merges with other gas and forms new stars. • Superno ...
... rich with heavy elements. • Perhaps the most famous is the “Crab Nebula” from a supernova in 1054 AD. It was so bright, Chinese, Japanese, and Arab astronomers saw it for months during the day, and could be seen for 2 years at night. • The remnant merges with other gas and forms new stars. • Superno ...
But how to find Polaris?
... – Now we can see earth from space, and photograph it! • BUT, the most important proof that Earth is round is the fact that the altitude of Polaris increases as you move toward the North pole, or decreases as you move toward the equator! – This would not happen on a flat Earth. A quicker way to say i ...
... – Now we can see earth from space, and photograph it! • BUT, the most important proof that Earth is round is the fact that the altitude of Polaris increases as you move toward the North pole, or decreases as you move toward the equator! – This would not happen on a flat Earth. A quicker way to say i ...
Origin of Ocean
... Milky Way Galaxy Milky Way Galaxy is 100 million light in diameter Our galaxy contains roughly 400 billion stars Sun is a very typical star located in one of the arms of the Milky Way Galaxy Other planetary systems have been found in our galaxy ...
... Milky Way Galaxy Milky Way Galaxy is 100 million light in diameter Our galaxy contains roughly 400 billion stars Sun is a very typical star located in one of the arms of the Milky Way Galaxy Other planetary systems have been found in our galaxy ...
Origins of Earth
... Milky Way Galaxy Milky Way Galaxy is 100 million light in diameter Our galaxy contains roughly 400 billion stars Sun is a very typical star located in one of the arms of the Milky Way Galaxy Other planetary systems have been found in our galaxy ...
... Milky Way Galaxy Milky Way Galaxy is 100 million light in diameter Our galaxy contains roughly 400 billion stars Sun is a very typical star located in one of the arms of the Milky Way Galaxy Other planetary systems have been found in our galaxy ...
January 2007 - Western Nevada Astronomical Society
... reading can really create the same impression. Having seen them with my own eyes, learning about them later on became enhanced, even though it was very far away, I had something physical that I could reference. I have seen stars that formed not very long ago right next to planetary nebulae that mark ...
... reading can really create the same impression. Having seen them with my own eyes, learning about them later on became enhanced, even though it was very far away, I had something physical that I could reference. I have seen stars that formed not very long ago right next to planetary nebulae that mark ...
File
... •A star is a huge ball of hot glowing gases, called plasma. •Stars twinkle because the light is distorted by Earth’s atmosphere. •All stars have one thing in common, the way they produce energy. •The energy comes from nuclear reactions that change hydrogen into helium. It is as if millions of atomi ...
... •A star is a huge ball of hot glowing gases, called plasma. •Stars twinkle because the light is distorted by Earth’s atmosphere. •All stars have one thing in common, the way they produce energy. •The energy comes from nuclear reactions that change hydrogen into helium. It is as if millions of atomi ...
Question C:
... • The HR diagram used with the Hoff exercise on Distance to the Pleiades says MV≈4 • Fig. 13-15 implies that MV≈4 for Main Sequence stars We therefore have a distance modulus ...
... • The HR diagram used with the Hoff exercise on Distance to the Pleiades says MV≈4 • Fig. 13-15 implies that MV≈4 for Main Sequence stars We therefore have a distance modulus ...
DOC - Cool Cosmos
... enough to ignite a nuclear explosion. This explosion supports the star against gravity and makes it shine. In our Sun's case, this stage will last for about ten billion years. But eventually, all the nuclear fuel inside the star (mostly hydrogen and helium) gets used up. After that, there's nothing ...
... enough to ignite a nuclear explosion. This explosion supports the star against gravity and makes it shine. In our Sun's case, this stage will last for about ten billion years. But eventually, all the nuclear fuel inside the star (mostly hydrogen and helium) gets used up. After that, there's nothing ...
GeoDome Notes
... constant if you traveled directly east and west. This was translated in latitude on maps. Here in SE PA, we are at approximately 40 degrees North latitude – meaning we are 40 degrees above the Equator. Measuring up to the North Star from the horizon will give you 40 degrees. Orion The red star is a ...
... constant if you traveled directly east and west. This was translated in latitude on maps. Here in SE PA, we are at approximately 40 degrees North latitude – meaning we are 40 degrees above the Equator. Measuring up to the North Star from the horizon will give you 40 degrees. Orion The red star is a ...
Ursa Major
Ursa Major /ˈɜrsə ˈmeɪdʒər/ (also known as the Great Bear and Charles' Wain) is a constellation in the northern celestial hemisphere. One of the 48 constellations listed by Ptolemy (second century AD), it remains one of the 88 modern constellations. It can be visible throughout the year in most of the northern hemisphere. Its name, Latin for ""the greater (or larger) she-bear"", stands as a reference to and in direct contrast with Ursa Minor, ""the smaller she-bear"", with which it is frequently associated in mythology and amateur astronomy. The constellation's most recognizable asterism, a group of seven relatively bright stars commonly known as the ""Big Dipper"", ""the Wagon"" or ""the Plough"" (among others), both mimicks the shape of the lesser bear (the ""Little Dipper"") and is commonly used as a navigational pointer towards the current northern pole star, Polaris in Ursa Minor. The Big Dipper and the constellation as a whole have mythological significance in numerous world cultures, usually as a symbol of the north.The third largest constellation in the sky, Ursa Major is home to many deep-sky objects including seven Messier objects, four other NGC objects and I Zwicky 18, the youngest known galaxy in the visible universe.