The ISM
... In such a cloud: – If a star’s worth of matter should clump together in a denser region than the rest of the cloud: – Gravitational attraction will win out over their combined pressure. – The clump will begin to collapse. – The cold cloud will fragment. ...
... In such a cloud: – If a star’s worth of matter should clump together in a denser region than the rest of the cloud: – Gravitational attraction will win out over their combined pressure. – The clump will begin to collapse. – The cold cloud will fragment. ...
Stellar Evolution
... • The result of the catastrophic collapse is the rebound and explosion of the core. • From start of collapse to now: 1 second! • Matter thrown back into the interstellar medium. ...
... • The result of the catastrophic collapse is the rebound and explosion of the core. • From start of collapse to now: 1 second! • Matter thrown back into the interstellar medium. ...
FINAL EXAM Name: ASTRONOMY II - 79202 Spring 1995
... “eats” the matter around it at a constant rate. Estimate the lifetime of the sun and compare it to the known value of the sun’s age. Assume 1% efficiency to convert gravitational potential energy to luminosity. ...
... “eats” the matter around it at a constant rate. Estimate the lifetime of the sun and compare it to the known value of the sun’s age. Assume 1% efficiency to convert gravitational potential energy to luminosity. ...
Student 4
... eye; however, it is much brighter in the infrared than it is in visible light. Barnard’s star is thought to be 10 billion years old and older than our galaxy. It must have been captured from elsewhere. Bernard’s star is travelling towards us at a very high speed. It will become closer to us than Pro ...
... eye; however, it is much brighter in the infrared than it is in visible light. Barnard’s star is thought to be 10 billion years old and older than our galaxy. It must have been captured from elsewhere. Bernard’s star is travelling towards us at a very high speed. It will become closer to us than Pro ...
Last time: Star Clusters (sec. 19.6)
... contraction and heating. But for low mass stars (less than about 2 Mo), when the He gets hot enough to ignite, the core is so dense that the gas is degenerate. (Recall discussion of brown dwarfs—same effect). Electron degeneracy pressure—due to quantum effect called “Pauli exclusion principle.” Resu ...
... contraction and heating. But for low mass stars (less than about 2 Mo), when the He gets hot enough to ignite, the core is so dense that the gas is degenerate. (Recall discussion of brown dwarfs—same effect). Electron degeneracy pressure—due to quantum effect called “Pauli exclusion principle.” Resu ...
Chapter 2 Knowing the Heavens
... 1. What role did astronomy play in ancient civilizations? 2. Are the stars that make up a constellation actually close to one other? 3. Are the same stars visible every night of the year? What is so special about the North Star? 4. Are the same stars visible from any location on Earth? 5. What cause ...
... 1. What role did astronomy play in ancient civilizations? 2. Are the stars that make up a constellation actually close to one other? 3. Are the same stars visible every night of the year? What is so special about the North Star? 4. Are the same stars visible from any location on Earth? 5. What cause ...
WEEK 8: CSI UCSC: ASTRO EDITION SOLUTIONS This week you
... (1) What other remnant usually accompanies a white dwarf? A white dwarf, which used to be the core of the star, comes embedded in a planetary nebula, which is basically a cloud of gas that used to make up the fluffy outer layers of the red giant. (2) Which two forces are in balance for a white dwarf ...
... (1) What other remnant usually accompanies a white dwarf? A white dwarf, which used to be the core of the star, comes embedded in a planetary nebula, which is basically a cloud of gas that used to make up the fluffy outer layers of the red giant. (2) Which two forces are in balance for a white dwarf ...
Birth and Death of Stars
... amount of light emitted by the star and how close it is to the Earth. The lower the number the greater the apparent magnitude. • Absolute magnitude is how bright the star would be if all stars were the same distance from Earth (32.6 light years). ...
... amount of light emitted by the star and how close it is to the Earth. The lower the number the greater the apparent magnitude. • Absolute magnitude is how bright the star would be if all stars were the same distance from Earth (32.6 light years). ...
Pistol Star - University of Dayton
... descending gas, which may be small and last a few days, or they can be 150,000km and last for months •Sunspots are 1000 degrees cooler than surrounding area and put off half the amount of energy •Remember from SCI190 that heat travels from hot to cold objects? The sunspots are heated from the surrou ...
... descending gas, which may be small and last a few days, or they can be 150,000km and last for months •Sunspots are 1000 degrees cooler than surrounding area and put off half the amount of energy •Remember from SCI190 that heat travels from hot to cold objects? The sunspots are heated from the surrou ...
Astronomy Jeopardy Astronomy jeopardy
... Star Dust - 500 Points When massively large stars die with a great explosion and such great a force of gravity that anything falling into it, including e-m waves becomes trapped and light cannot ...
... Star Dust - 500 Points When massively large stars die with a great explosion and such great a force of gravity that anything falling into it, including e-m waves becomes trapped and light cannot ...
Homework #3 MHC Astronomy 100/101/110 Prof. Stage For ALL the
... b. Extra‐Credit (up to 4 points): Using the Declination axis for a scale, try to measure the semi‐major axis in arc seconds (you may want to print out the page). What do you get? Can you think of any reason why the distance you measure here might be less than the best‐fit result the scientists ob ...
... b. Extra‐Credit (up to 4 points): Using the Declination axis for a scale, try to measure the semi‐major axis in arc seconds (you may want to print out the page). What do you get? Can you think of any reason why the distance you measure here might be less than the best‐fit result the scientists ob ...
L5 - QUB Astrophysics Research Centre
... The surface luminosity of the sun is L =3.86x1026W, and at no point in the Sun can the luminosity exceed this value (see eqn of energy production). What can you conclude from this ? As the T and v of the rising elements are determined by the difference between the actual temperature gradient and a ...
... The surface luminosity of the sun is L =3.86x1026W, and at no point in the Sun can the luminosity exceed this value (see eqn of energy production). What can you conclude from this ? As the T and v of the rising elements are determined by the difference between the actual temperature gradient and a ...
name - New York Science Teacher
... NAME _____________________________________________________ DATE_______________ CLASS______ ...
... NAME _____________________________________________________ DATE_______________ CLASS______ ...