Hertzsprung2 - courses.psu.edu
... What is the luminosity (relative to the sun) of a star 3 times more massive than the sun? ...
... What is the luminosity (relative to the sun) of a star 3 times more massive than the sun? ...
Life Cycle of a Star - Intervention Worksheet
... _____ The star begins to run out of fuel and expands into a red giant or red super giant. _____ Stars start out as diffused clouds of gas and dust drifting through space. A single one of these clouds is called a nebula _____ What happens next depends on the mass of the star. _____ Heat and pressure ...
... _____ The star begins to run out of fuel and expands into a red giant or red super giant. _____ Stars start out as diffused clouds of gas and dust drifting through space. A single one of these clouds is called a nebula _____ What happens next depends on the mass of the star. _____ Heat and pressure ...
6-Where to Survey - The Challenger Learning Center
... Way has structure. We have a central bulge with a bar through it, arms that spiral outward from the center, and a halo of material surrounding the outer limits. The center of our galaxy has a supermassive black hole. We have between 200 to 400 billion stars which occupy an area that is between 100,0 ...
... Way has structure. We have a central bulge with a bar through it, arms that spiral outward from the center, and a halo of material surrounding the outer limits. The center of our galaxy has a supermassive black hole. We have between 200 to 400 billion stars which occupy an area that is between 100,0 ...
Lecture 10 - Concord University
... neutronization occurs converting the electrons and protons into neutrons and releasing a blast of ...
... neutronization occurs converting the electrons and protons into neutrons and releasing a blast of ...
Star Life Cycle
... Stellar Evolution: Life of the The most massive stars have Star the shortest lives. Stars that are 25 to 50 times that of the sun live for only a few million years. Stars like our Sun live for about 10 billion years. Stars less massive than the Sun have even longer life spans ...
... Stellar Evolution: Life of the The most massive stars have Star the shortest lives. Stars that are 25 to 50 times that of the sun live for only a few million years. Stars like our Sun live for about 10 billion years. Stars less massive than the Sun have even longer life spans ...
Lecture 18: Supernovae
... (=energy of motion) of the very hot proton and electron. The neutrino flies out of the star, taking energy with it. Note that electron degeneracy pressure will not be important source of pressure in this situation because 1) at these densities, the electrons are approaching their maximum speeds=maxi ...
... (=energy of motion) of the very hot proton and electron. The neutrino flies out of the star, taking energy with it. Note that electron degeneracy pressure will not be important source of pressure in this situation because 1) at these densities, the electrons are approaching their maximum speeds=maxi ...
STELLAR EVOLUTION
... Stars evolve because they consume their nuclear “fuel", forcing changes in their internal structure, until they are no longer capable of continuing nuclear fusion. Stars remain on the main sequence for about 90% of their total lifetimes, fusing hydrogen quietly in their cores. Their surface temperat ...
... Stars evolve because they consume their nuclear “fuel", forcing changes in their internal structure, until they are no longer capable of continuing nuclear fusion. Stars remain on the main sequence for about 90% of their total lifetimes, fusing hydrogen quietly in their cores. Their surface temperat ...
Stars in our Galaxy
... • Most stars on the H-R diagram fit into a diagonal band. This band is called the main sequence. It contains hot, blue, bright stars in the upper left and cool, red, dim stars in the lower right. • 90% of all stars are main sequence stars but there are a few that don’t fall into this “line” what ar ...
... • Most stars on the H-R diagram fit into a diagonal band. This band is called the main sequence. It contains hot, blue, bright stars in the upper left and cool, red, dim stars in the lower right. • 90% of all stars are main sequence stars but there are a few that don’t fall into this “line” what ar ...
Unit 1
... • Low-mass stars create carbon and oxygen in their cores at the end of their lifespan, thanks to the higher temperatures and pressures present in a red giant star • High-mass stars produce heavier elements like silicon, magnesium, etc., by nuclear fusion in their cores – Temperatures are much higher ...
... • Low-mass stars create carbon and oxygen in their cores at the end of their lifespan, thanks to the higher temperatures and pressures present in a red giant star • High-mass stars produce heavier elements like silicon, magnesium, etc., by nuclear fusion in their cores – Temperatures are much higher ...
Life Cycles of Stars
... The Heavens Are Not Changeless • The Stars Move – Most of our constellations would have been unrecognizable to Neanderthal Man ...
... The Heavens Are Not Changeless • The Stars Move – Most of our constellations would have been unrecognizable to Neanderthal Man ...
File - Mr. Goodyear Astronomy
... proton-proton cycle. 90% of stars are main sequence stage. Stars are said to be in Hydrostatic Equilibrium: energy output = gravitational pull inward (known as hydrogen burning stage) - Stars like our sun last 10 billion years as a main sequence - ZAMS – zero age main sequence ...
... proton-proton cycle. 90% of stars are main sequence stage. Stars are said to be in Hydrostatic Equilibrium: energy output = gravitational pull inward (known as hydrogen burning stage) - Stars like our sun last 10 billion years as a main sequence - ZAMS – zero age main sequence ...
PH109 Exploring the Universe, Test 3, Fall 2001 Please indicate the
... 2. The temperature of the layer of gas that produces the visible light of the Sun is about _______. a) 15 million K, b) 300,000 K, c) 10 million K, d) 1 million K, e) 5800 K 3. What is the net result of the proton-proton chain? a) 2 heliums are fused into 1 carbon, 1 neutrinos + energy b) 4 hydrogen ...
... 2. The temperature of the layer of gas that produces the visible light of the Sun is about _______. a) 15 million K, b) 300,000 K, c) 10 million K, d) 1 million K, e) 5800 K 3. What is the net result of the proton-proton chain? a) 2 heliums are fused into 1 carbon, 1 neutrinos + energy b) 4 hydrogen ...
PowerPoint file - Adin Community Bible Church
... “To many astronomers it seems reasonable that stars could form from these clouds of gas. Most astronomers believe that the clouds gradually contract under their own weight to form stars. This process has never been observed, but if it did occur, it would take many human lifetimes. continued ...
... “To many astronomers it seems reasonable that stars could form from these clouds of gas. Most astronomers believe that the clouds gradually contract under their own weight to form stars. This process has never been observed, but if it did occur, it would take many human lifetimes. continued ...
Instrumentation for Cosmology
... Just strings of stars? No, because they would be tightly wound up. Suppose the age of the galaxy is 10 billion years. Its inner regions rotate once in 200 million years… Therefore, we’d expect about 50 turns. The galaxy would look like a clock spring. ...
... Just strings of stars? No, because they would be tightly wound up. Suppose the age of the galaxy is 10 billion years. Its inner regions rotate once in 200 million years… Therefore, we’d expect about 50 turns. The galaxy would look like a clock spring. ...
Galaxies and the Universe
... faint stars, brown dwarfs, planets • Cool non-luminous gas • Massive Neutrinos? • WIMP’s (Weakly Interacting Massive Particles) • Magnetic monopoles • Exotic objects: strings, mini-black holes ...
... faint stars, brown dwarfs, planets • Cool non-luminous gas • Massive Neutrinos? • WIMP’s (Weakly Interacting Massive Particles) • Magnetic monopoles • Exotic objects: strings, mini-black holes ...
Test#3
... b) they are all consuming hydrogen in their cores c) they are located near the Sun in space d) they are all among the most luminous stars 22. The most important factor affecting a star's main-sequence lifetime is a) radius, b) mass, c) percentage of metals, d) hydrogen to helium ratio 23. The main s ...
... b) they are all consuming hydrogen in their cores c) they are located near the Sun in space d) they are all among the most luminous stars 22. The most important factor affecting a star's main-sequence lifetime is a) radius, b) mass, c) percentage of metals, d) hydrogen to helium ratio 23. The main s ...
Class 4 Galaxies Galaxy Classification Formation of Galaxies
... years. This makes it the oldest object yet discovered in the galaxy. HE 1523-0901 is the first star whose age was determined using the decay of the radioactive elements uranium and thorium in tandem with measurements of several neutron capture elements. The oldest galaxy: In 2007 the Keck telescope, ...
... years. This makes it the oldest object yet discovered in the galaxy. HE 1523-0901 is the first star whose age was determined using the decay of the radioactive elements uranium and thorium in tandem with measurements of several neutron capture elements. The oldest galaxy: In 2007 the Keck telescope, ...
Supernovae: Heavy Elements
... elements back into space So, over 1 billion solar masses or 1% of all stellar mass is from supernova explosions Supernova explosions could easily be responsible for all of the iron and other heavy elements found in the galaxy Our sun, our planets, the silicon in our rocks, the change in our pockets, ...
... elements back into space So, over 1 billion solar masses or 1% of all stellar mass is from supernova explosions Supernova explosions could easily be responsible for all of the iron and other heavy elements found in the galaxy Our sun, our planets, the silicon in our rocks, the change in our pockets, ...
When you look up at the night sky, thousands of objects
... that position in each model. For example, the label may consist of a toothpick stuck in the appropriate location in a clay model. A paper flag bearing the words “Solar System” might be taped to the top of the toothpick. Encourage your child to display the models in school. Here are some questions to ...
... that position in each model. For example, the label may consist of a toothpick stuck in the appropriate location in a clay model. A paper flag bearing the words “Solar System” might be taped to the top of the toothpick. Encourage your child to display the models in school. Here are some questions to ...
8 clusters stellar evo
... Raw materials collapse Protostar begins to spin Eventually, fusion of H into He begins ...
... Raw materials collapse Protostar begins to spin Eventually, fusion of H into He begins ...
Branches of Earth Science Tools Used to Study Stars Constellations
... Galaxy is a huge collection of stars bound by gravity o Contain various star groups Billions of galaxies in the universe 3 types of galaxies o Spiral o Elliptical o Irregular ...
... Galaxy is a huge collection of stars bound by gravity o Contain various star groups Billions of galaxies in the universe 3 types of galaxies o Spiral o Elliptical o Irregular ...
Life and Death Of A Star - EarthSpaceScience
... • eventuality a protostar becomes so hot that fusion begins – now a star • The amount of mass determines whether the star is a main sequence star or a giant ...
... • eventuality a protostar becomes so hot that fusion begins – now a star • The amount of mass determines whether the star is a main sequence star or a giant ...
Star and Sun Properties
... Day 1: What Are Stars? A star is a large celestial body that is composed of hot gas and that emits light; the sun is a typical star • The Sun, our closest star, is 93 million miles from Earth. • The next closest star is 4.3 lighter years away. • By mass, the Sun is 71 % Hydrogen, 27% helium and t ...
... Day 1: What Are Stars? A star is a large celestial body that is composed of hot gas and that emits light; the sun is a typical star • The Sun, our closest star, is 93 million miles from Earth. • The next closest star is 4.3 lighter years away. • By mass, the Sun is 71 % Hydrogen, 27% helium and t ...
Earth in space
... which is seen when the earth passes a planet farther from it causing it to look like it is going ...
... which is seen when the earth passes a planet farther from it causing it to look like it is going ...
H II region
An H II region is a large, low-density cloud of partially ionized gas in which star formation has recently taken place. The short-lived blue stars forged in these regions emit copious amounts of ultraviolet light that ionize the surrounding gas. H II regions—sometimes several hundred light-years across—are often associated with giant molecular clouds. The first known H II region was the Orion Nebula, which was discovered in 1610 by Nicolas-Claude Fabri de Peiresc.H II regions are named for the large amount of ionised atomic hydrogen they contain, referred to as H II, pronounced H-two by astronomers (an H I region being neutral atomic hydrogen, and H2 being molecular hydrogen). Such regions have extremely diverse shapes, because the distribution of the stars and gas inside them is irregular. They often appear clumpy and filamentary, sometimes showing bizarre shapes such as the Horsehead Nebula. H II regions may give birth to thousands of stars over a period of several million years. In the end, supernova explosions and strong stellar winds from the most massive stars in the resulting star cluster will disperse the gases of the H II region, leaving behind a cluster of birthed stars such as the Pleiades.H II regions can be seen to considerable distances in the universe, and the study of extragalactic H II regions is important in determining the distance and chemical composition of other galaxies. Spiral and irregular galaxies contain many H II regions, while elliptical galaxies are almost devoid of them. In the spiral galaxies, including the Milky Way, H II regions are concentrated in the spiral arms, while in the irregular galaxies they are distributed chaotically. Some galaxies contain huge H II regions, which may contain tens of thousands of stars. Examples include the 30 Doradus region in the Large Magellanic Cloud and NGC 604 in the Triangulum Galaxy.