01 - Ionia Public Schools
... _____ 8. Gravitational force increases as the mass of an object a. decreases or as the distance between two objects decreases. b. increases or as the distance between two objects increases. c. increases or as the distance between two objects decreases. d. decreases or as the distance between two obj ...
... _____ 8. Gravitational force increases as the mass of an object a. decreases or as the distance between two objects decreases. b. increases or as the distance between two objects increases. c. increases or as the distance between two objects decreases. d. decreases or as the distance between two obj ...
Star Life Cycle
... 17. How big is a low mass star? _________________ What stages does it go through? ___________________________________________________ How big is it? ____________________________ What does it become in the end? __________________ 18. How big is a medium mass star? ________________________ What stages ...
... 17. How big is a low mass star? _________________ What stages does it go through? ___________________________________________________ How big is it? ____________________________ What does it become in the end? __________________ 18. How big is a medium mass star? ________________________ What stages ...
Ch. 15 Notes
... a neighbor to our Milky Way Galaxy (a satellite to our galaxy). It was seen by Ferdenand Magellan as he circled the world. It can only be seen from the southern hemisphere. ...
... a neighbor to our Milky Way Galaxy (a satellite to our galaxy). It was seen by Ferdenand Magellan as he circled the world. It can only be seen from the southern hemisphere. ...
Lecture 6: Properties of Stars The Constellations The Constellations
... mapped many of these “absorption lines” with reasonable accuracy - called Fraunhofer lines. ‘Na D lines’ ...
... mapped many of these “absorption lines” with reasonable accuracy - called Fraunhofer lines. ‘Na D lines’ ...
The Origin of Our Solar System
... – By measuring the numbers of the radioactive elements and the newly-created elements by the decay, one can calculate the age ...
... – By measuring the numbers of the radioactive elements and the newly-created elements by the decay, one can calculate the age ...
Stellar Spectra
... A star is a self-luminous sphere of gas. (A HUGE BALL OF FIRE) (You can put a million earths inside the sun) Stars are held together by gravity. n But ...
... A star is a self-luminous sphere of gas. (A HUGE BALL OF FIRE) (You can put a million earths inside the sun) Stars are held together by gravity. n But ...
Stellar Evolution
... sequence to the carbon core stage is a little different. • Now however, there is enough mass that it becomes hot enough to fuse carbon? • Hot enough to eventually fuse lots of elements. ...
... sequence to the carbon core stage is a little different. • Now however, there is enough mass that it becomes hot enough to fuse carbon? • Hot enough to eventually fuse lots of elements. ...
Star Evolution
... • From expansion velocity of ~10 km/sec the distance is 1000 lightyears • From distance and apparent size the linear size is ~a light year ...
... • From expansion velocity of ~10 km/sec the distance is 1000 lightyears • From distance and apparent size the linear size is ~a light year ...
Slide 1
... Also energy generation is discussed Namely, how does the luminosity change with radius depends on the energy generated at a given radius e ( r ) Equation 9.55 dL/dr = 4 p r2 r (r ) e (r ) ...
... Also energy generation is discussed Namely, how does the luminosity change with radius depends on the energy generated at a given radius e ( r ) Equation 9.55 dL/dr = 4 p r2 r (r ) e (r ) ...
Review for Astronomy 3 Midterm #2
... -- Nuclear burning starts as soon as the central temperature of the new protostar reaches 107 (10 million) K. -- Once a new star is visible through its cloud, it is called a T Tauri star. -- Some gas clouds will not have enough mass to reach the 10 million K temperatures required for fusion – the st ...
... -- Nuclear burning starts as soon as the central temperature of the new protostar reaches 107 (10 million) K. -- Once a new star is visible through its cloud, it is called a T Tauri star. -- Some gas clouds will not have enough mass to reach the 10 million K temperatures required for fusion – the st ...
Answer Key
... B) its exact center, or singularity. C) relatively far away from the black hole, where matter is still relatively cool. D) just outside the event horizon, on the accretion disk. ...
... B) its exact center, or singularity. C) relatively far away from the black hole, where matter is still relatively cool. D) just outside the event horizon, on the accretion disk. ...
PowerPoint 演示文稿
... lower than those observed in starburst galaxies. * the feedback effeciencies are completely unphysical. * permanent ejection has a drastic impact on the stellar masses but leaves the gas mass basically unchanged. ...
... lower than those observed in starburst galaxies. * the feedback effeciencies are completely unphysical. * permanent ejection has a drastic impact on the stellar masses but leaves the gas mass basically unchanged. ...
Quantum Well Electron Gain Structures and Infrared
... consistent with MC) • With distance L > 4x106 L0 (similar to Eta Car and Pistol Star) • Implies mass > 150 M0 (Eddington-based) • Not a cluster; is it a binary?? Even if binary, minimum mass > 75 M0 • So … • SGR = neutron star already; if same birthdate, progenitor must have been more massive than ...
... consistent with MC) • With distance L > 4x106 L0 (similar to Eta Car and Pistol Star) • Implies mass > 150 M0 (Eddington-based) • Not a cluster; is it a binary?? Even if binary, minimum mass > 75 M0 • So … • SGR = neutron star already; if same birthdate, progenitor must have been more massive than ...
Homework #7 (Ch. 19)
... gravity continues to compress the gas and heat it until finally the core temperature reaches 10 million K, which is sufficient to initiate hydrogen fusion. The object is now a star. 3. Chaisson Review and Discussion 19.3 What is the role of rotation in the process of stellar birth? (3 points) As an ...
... gravity continues to compress the gas and heat it until finally the core temperature reaches 10 million K, which is sufficient to initiate hydrogen fusion. The object is now a star. 3. Chaisson Review and Discussion 19.3 What is the role of rotation in the process of stellar birth? (3 points) As an ...
AY1 Homework for Quiz 2: Spring 2017
... ___ A. It will have become slightly more massive than the Sun is now because lightweight hydrogen has been converted into heavier Helium ___ B. It will be enriched in helium compared to the Sun ___ ...
... ___ A. It will have become slightly more massive than the Sun is now because lightweight hydrogen has been converted into heavier Helium ___ B. It will be enriched in helium compared to the Sun ___ ...
PHYSICS 113 Practice Questions #2
... c. whether it is loca ted on the o uter regions o r the central reg ions of the mo lecular cloud that gave it birth d. the speed and direction of its rotation e. the size of the d isk around it 15. Why do all stars spend most of their lives on the main sequence? a. because the neutrinos created insi ...
... c. whether it is loca ted on the o uter regions o r the central reg ions of the mo lecular cloud that gave it birth d. the speed and direction of its rotation e. the size of the d isk around it 15. Why do all stars spend most of their lives on the main sequence? a. because the neutrinos created insi ...
Teacher Guide Lives of Stars
... (usually downloaded from web sites and/or posters) of a star field with multiple colors of stars, a red giant, the sun, a nebula, a supernova, a dying star like Eta Carinae, etc. The more photos that can cover the chalk boards, walls, doors, ceiling, the better but do not put them up until the day o ...
... (usually downloaded from web sites and/or posters) of a star field with multiple colors of stars, a red giant, the sun, a nebula, a supernova, a dying star like Eta Carinae, etc. The more photos that can cover the chalk boards, walls, doors, ceiling, the better but do not put them up until the day o ...
SSG Coordinators will be at the Cronan Ranch observing site at 6
... to find. However, since all of the Auriga clusters are imbedded in the gauzy background of the Milky Way, determining the outer limits of any of them is difficult. Messier 36 is an open cluster in the truest sense, with about 15 brighter stars standing out amongst a hazy glow of hundreds of dimmer s ...
... to find. However, since all of the Auriga clusters are imbedded in the gauzy background of the Milky Way, determining the outer limits of any of them is difficult. Messier 36 is an open cluster in the truest sense, with about 15 brighter stars standing out amongst a hazy glow of hundreds of dimmer s ...
here
... When most stars get old they bloat and become ‘red giants’. Our sun will eventually run out of fuel and become a red giant. As it gets larger it will engulf the inner planets, possibly the earth as well. It may explode or go ‘Super Nova’. Some times a red giant just runs out of fuel, dims and grows ...
... When most stars get old they bloat and become ‘red giants’. Our sun will eventually run out of fuel and become a red giant. As it gets larger it will engulf the inner planets, possibly the earth as well. It may explode or go ‘Super Nova’. Some times a red giant just runs out of fuel, dims and grows ...
AstronomyQuotes
... We are a spiral galaxy with many spiral arms that revolve around a bulge on a relatively flat disk, surrounded by a dimmer halo. The Halo contains about 200 globular clusters of stars. Our galaxy is abour 100,000 light years in diameter. We can use stellar orbits to measure galactic mass through Kep ...
... We are a spiral galaxy with many spiral arms that revolve around a bulge on a relatively flat disk, surrounded by a dimmer halo. The Halo contains about 200 globular clusters of stars. Our galaxy is abour 100,000 light years in diameter. We can use stellar orbits to measure galactic mass through Kep ...
Main-sequence stage Stellar lifetimes
... – Core collapses in seconds; central T rises again; γ-rays photodissociate 56Fe into 4He nuclei, then into protons and electrons. – As densities rise, p + e– neutrons + neutrinos – Neutron-rich matter compresses to density ~ 1017 kg m–3 and stops further collapse. ...
... – Core collapses in seconds; central T rises again; γ-rays photodissociate 56Fe into 4He nuclei, then into protons and electrons. – As densities rise, p + e– neutrons + neutrinos – Neutron-rich matter compresses to density ~ 1017 kg m–3 and stops further collapse. ...
Binary Stars (Professor Powerpoint)
... Sometimes the orbital plane is lined up so that the stars pass in front of each other as seen from the Earth. Each eclipse will cause the total light from the system to decrease. The amount of the decrease will depend on how much of each star is covered up. The period is from one large dip to the ne ...
... Sometimes the orbital plane is lined up so that the stars pass in front of each other as seen from the Earth. Each eclipse will cause the total light from the system to decrease. The amount of the decrease will depend on how much of each star is covered up. The period is from one large dip to the ne ...
Charting The Universe - University of Windsor
... • Ancient Calendars: for religious festivals and agriculture. (Geocentric model) • There are 88 constellations. (Most are seen in Windsor at some part of the year.) • Still useful for depicting regions of the sky. • Note: the stars are not close to each other…they just appear to be! ...
... • Ancient Calendars: for religious festivals and agriculture. (Geocentric model) • There are 88 constellations. (Most are seen in Windsor at some part of the year.) • Still useful for depicting regions of the sky. • Note: the stars are not close to each other…they just appear to be! ...
AST 207 Test 2 Answers 20 October 2010
... star A. Prof. Adams says he discovered a new type of star that is fainter than white dwarfs. Has he discovered a new type of star? Explain. The clues are very much like Walter Adams’ discovery that Sirius B is a white dwarf. However, there is a crucial missing clue. Since Sirius A and B were known t ...
... star A. Prof. Adams says he discovered a new type of star that is fainter than white dwarfs. Has he discovered a new type of star? Explain. The clues are very much like Walter Adams’ discovery that Sirius B is a white dwarf. However, there is a crucial missing clue. Since Sirius A and B were known t ...
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.