Stellar Evolution
... and diameter. In fact, astronomers have discovered that the mass and the composition (makeup) of a star determine nearly all its other properties. ...
... and diameter. In fact, astronomers have discovered that the mass and the composition (makeup) of a star determine nearly all its other properties. ...
Properties of Stars
... Death of Medium-Mass Stars • Stars with masses similar to the sun evolve in essentially the same way as low-mass stars. • During their collapse from red giants to white dwarfs, mediummass stars are thought to cast off their bloated outer layer, creating an expanding round cloud of gas called plane ...
... Death of Medium-Mass Stars • Stars with masses similar to the sun evolve in essentially the same way as low-mass stars. • During their collapse from red giants to white dwarfs, mediummass stars are thought to cast off their bloated outer layer, creating an expanding round cloud of gas called plane ...
"Star Tracks", Leaflet for Royal Society Summer Exhibition
... the centre of our Galaxy, the stars form a rotating bar that draws gas inwards. Right in the centre lives a supermassive black hole, approximately 4,000,000 times the mass of our Sun. We develop models to understand this mysterious region of our Galaxy. ...
... the centre of our Galaxy, the stars form a rotating bar that draws gas inwards. Right in the centre lives a supermassive black hole, approximately 4,000,000 times the mass of our Sun. We develop models to understand this mysterious region of our Galaxy. ...
PHYSICS 1500 - The University of Sydney
... (e) We can see Cepheids on the far side of the disc. Question 17 What is the origin of the hot spots in double-lobed radio galaxies? (a) Nuclear fusion of hydrogen (b) The interaction of high speed particles from the jets with the intergalactic medium (c) Location closest to the galaxy producing the ...
... (e) We can see Cepheids on the far side of the disc. Question 17 What is the origin of the hot spots in double-lobed radio galaxies? (a) Nuclear fusion of hydrogen (b) The interaction of high speed particles from the jets with the intergalactic medium (c) Location closest to the galaxy producing the ...
Final Exam: Chs 4-5, 12-17
... ____ 48. What is the relationship between the mass of a protostar and the time needed for it to reach the main sequence after it forms inside an interstellar cloud? a. The time needed is independent of the mass of the protostar. b. The time needed is least for a protostar of approximately 4 solar m ...
... ____ 48. What is the relationship between the mass of a protostar and the time needed for it to reach the main sequence after it forms inside an interstellar cloud? a. The time needed is independent of the mass of the protostar. b. The time needed is least for a protostar of approximately 4 solar m ...
CHAPTER 32 1. What is happening inside a star that isn`t happening
... 49. The Milky Way galaxy contains interstellar matter that may form new _______________. ...
... 49. The Milky Way galaxy contains interstellar matter that may form new _______________. ...
Study Guide: Chapters 32-‐34 FROSH CHAPTER 32 1. What is
... 49. The Milky Way galaxy contains interstellar matter that may form new _______________. ...
... 49. The Milky Way galaxy contains interstellar matter that may form new _______________. ...
14_MilkyWay_advanced_2014may
... •Estimates universe is disk shaped •Diameter is 5 times thickness •Sun appears to be at the center ...
... •Estimates universe is disk shaped •Diameter is 5 times thickness •Sun appears to be at the center ...
Stars and Galaxies
... explode into a supernova leaving behind a core that is even more dense than a neutron star? Such gravitational forces would be so great that not even light could escape We call these black holes ...
... explode into a supernova leaving behind a core that is even more dense than a neutron star? Such gravitational forces would be so great that not even light could escape We call these black holes ...
Was our Solar System Born inside a Wolf
... Figure 2: Density at 4 epochs in the evolution of a wind-blown bubble around a 40 M¤ star, at (clockwise from top left) 1.27, 2.49, 4.38 and 4.58 Myr. Note that the shell is unstable to several instabilities, related to both the hydrodynamics and the ionization front, which cause fragmentation and ...
... Figure 2: Density at 4 epochs in the evolution of a wind-blown bubble around a 40 M¤ star, at (clockwise from top left) 1.27, 2.49, 4.38 and 4.58 Myr. Note that the shell is unstable to several instabilities, related to both the hydrodynamics and the ionization front, which cause fragmentation and ...
The Milky Way Galaxy - Academic Computer Center
... Jupiter’s orbit but with a This is called a supermassive mass several million times black hole. Most other galaxies the mass of the Sun. are also thought to have these huge • Since so little light is visible black holes in their centers. from this object it is thought to be a very large black hole. ...
... Jupiter’s orbit but with a This is called a supermassive mass several million times black hole. Most other galaxies the mass of the Sun. are also thought to have these huge • Since so little light is visible black holes in their centers. from this object it is thought to be a very large black hole. ...
Constellations & Stars - Toms River Regional Schools :: Home
... cluster of galaxies called the local group ...
... cluster of galaxies called the local group ...
Friday, January 27, 2017 First exam a week from today. Review
... structure with 100 times the area of the Earth was orbiting the star. Some suggested an alien structure. Bunk (no heat signal), but still not well explained with serious science. ...
... structure with 100 times the area of the Earth was orbiting the star. Some suggested an alien structure. Bunk (no heat signal), but still not well explained with serious science. ...
X-ray studies of star and planet formation Eric Feigelson
... 7. Investigating triggered star formation The expanding HII region around OB stars will shock and compress molecular cloud material, triggering a new generation of star formation. Few stellar samples are available to test the models (`collect-and-collapse’ and `radiative driven implosion’). Chandra ...
... 7. Investigating triggered star formation The expanding HII region around OB stars will shock and compress molecular cloud material, triggering a new generation of star formation. Few stellar samples are available to test the models (`collect-and-collapse’ and `radiative driven implosion’). Chandra ...
Life Cycle of a Star
... into space, forming a cloud of gas called a planetary nebula. The blue-white hot core of the star that is left behind cools and becomes a white dwarf. The white dwarf eventually runs out of fuel and dies as a black dwarf. THE DEATH OF A HIGH MASS STAR A dying red super giant star can suddenly explod ...
... into space, forming a cloud of gas called a planetary nebula. The blue-white hot core of the star that is left behind cools and becomes a white dwarf. The white dwarf eventually runs out of fuel and dies as a black dwarf. THE DEATH OF A HIGH MASS STAR A dying red super giant star can suddenly explod ...
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 ...
Stars Life Cycle WS
... _____ 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 ...
"Galaxies and the Universe" Lesson Outline answers
... All galaxies are formed and affected by gravity, and all contain billions of stars. The three most common kinds of galaxies have different shapes. Only spiral galaxies have an internal structure. Elliptical galaxies have more old stars than the other types of galaxies, and irregular galaxies contain ...
... All galaxies are formed and affected by gravity, and all contain billions of stars. The three most common kinds of galaxies have different shapes. Only spiral galaxies have an internal structure. Elliptical galaxies have more old stars than the other types of galaxies, and irregular galaxies contain ...
From the Everett and Seattle Astronomical Societies, this is IT
... the sun, because the heat and pressure from such big stars' cores forces matter away from the surface. Eikenberry said one possibility is that the big star was formed in a process called shock-induced star formation, which occurs when a supernova blows up and slams the gaseous material in a molecula ...
... the sun, because the heat and pressure from such big stars' cores forces matter away from the surface. Eikenberry said one possibility is that the big star was formed in a process called shock-induced star formation, which occurs when a supernova blows up and slams the gaseous material in a molecula ...
Spring 2014 Astronomy Exam Study Guide (Co-Taught)
... Role of supernovae in dispersing interstellar space with heavy elements General Review Questions: 39. Describe the full life cycle of our sun, including all major stages of its life. 40. Why does a high mass star evolve differently than a low mass star? 41. Why is a Red Giant red in color? 42. Mos ...
... Role of supernovae in dispersing interstellar space with heavy elements General Review Questions: 39. Describe the full life cycle of our sun, including all major stages of its life. 40. Why does a high mass star evolve differently than a low mass star? 41. Why is a Red Giant red in color? 42. Mos ...
Star Formation
... fusion. They continue to cool, eventually becoming compact, dark, cold fragments of unburned matter • They are known as brown dwarfs • Note: Jupiter would need to be 80 times more massive to start fusion ...
... fusion. They continue to cool, eventually becoming compact, dark, cold fragments of unburned matter • They are known as brown dwarfs • Note: Jupiter would need to be 80 times more massive to start fusion ...
Course Expectations
... The structure (layers) and composition of the sun Fusion occurs in the core of the sun The sun rotates and has cycles The Nebular Theory for Star formation The purpose and function of an HR Diagram Why the spectra of stars changes along the spectral sequence Mass determines the life of a star How st ...
... The structure (layers) and composition of the sun Fusion occurs in the core of the sun The sun rotates and has cycles The Nebular Theory for Star formation The purpose and function of an HR Diagram Why the spectra of stars changes along the spectral sequence Mass determines the life of a star How st ...
Lecture 10
... Dinky little stars like Prox Cen will last trillions of years Huge stars like Rigel are gone in a few million There aren’t many large stars out there, because they don’t last. 10,000 O stars of the 100,000,000,000 Milky Way stars ...
... Dinky little stars like Prox Cen will last trillions of years Huge stars like Rigel are gone in a few million There aren’t many large stars out there, because they don’t last. 10,000 O stars of the 100,000,000,000 Milky Way stars ...
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.