Exam 1 Monday, September 22nd, Chs 1-3
... moving away from us at a faster rate than closer ones, we conclude that A) the universe is expanding. B) the farthest galaxies will eventually be moving faster than the speed of light. C) the universe is shrinking. D) the Milky Way Galaxy is expanding. E) we are located at the center of the universe ...
... moving away from us at a faster rate than closer ones, we conclude that A) the universe is expanding. B) the farthest galaxies will eventually be moving faster than the speed of light. C) the universe is shrinking. D) the Milky Way Galaxy is expanding. E) we are located at the center of the universe ...
Exam2 Review Slides
... • A hydrogen nucleus has less mass than the four protons (hydrogen nuclei) that fuse • This difference in mass is converted into energy: ...
... • A hydrogen nucleus has less mass than the four protons (hydrogen nuclei) that fuse • This difference in mass is converted into energy: ...
Equations of Stellar Structure Stellar structure and evolution can be
... from the system. (Supernovae are the exception to this rule.) The gravitational energy can be either positive or negative, and simply reflects the heat gained or lost in the shell by P dV work. Thus, ...
... from the system. (Supernovae are the exception to this rule.) The gravitational energy can be either positive or negative, and simply reflects the heat gained or lost in the shell by P dV work. Thus, ...
MT 2 Answers Version A
... 30. Which of the following methods is NOT used to transport energy from the core to the surface of the Sun? (a) ...
... 30. Which of the following methods is NOT used to transport energy from the core to the surface of the Sun? (a) ...
MT 2 Answers Version C
... O- and B-type stars have converted much more of their hydrogen into heavier elements. ...
... O- and B-type stars have converted much more of their hydrogen into heavier elements. ...
MT 2 Answers Version D
... 9. In the proton-proton chain, the net reaction is that four hydrogen nuclei are converted to one helium nucleus and ...
... 9. In the proton-proton chain, the net reaction is that four hydrogen nuclei are converted to one helium nucleus and ...
Powerpoint for today
... tenth as massive as our sun? A: 1 billion years = 109 years B: 10 billion years = 1010 years C: 100 billion years = 1011 years D: 1 trillion years = 1012 years ...
... tenth as massive as our sun? A: 1 billion years = 109 years B: 10 billion years = 1010 years C: 100 billion years = 1011 years D: 1 trillion years = 1012 years ...
SL2 IIIC Carter 280911 - Particle Solids Interactions group
... – “assume that radiation is not quantum radiation, but a neutral particle with mass approximately equal to that of the proton” – identified with the “neutron” suggested by Rutherford in 1920 ...
... – “assume that radiation is not quantum radiation, but a neutral particle with mass approximately equal to that of the proton” – identified with the “neutron” suggested by Rutherford in 1920 ...
Astronomy practice questions for 3-6 test
... 3. What best describes the doppler effect? A. An apparent change in frequency of a wave due to the relative motion between a wave source and an observer B. When sound changes pitch C. When light changes color D. An apparent change in the amplitude of a wave due to the relative motion betwe ...
... 3. What best describes the doppler effect? A. An apparent change in frequency of a wave due to the relative motion between a wave source and an observer B. When sound changes pitch C. When light changes color D. An apparent change in the amplitude of a wave due to the relative motion betwe ...
PPT - Swift
... changes in stars, galaxies, and the universe over time. * Students know the solar system is located in an outer edge of the the disc-shaped Milky Way galaxy, which spans 100,000 light years * Students know that stars differ in their life cycles and that visual, radio, and X-ray telescopes may be use ...
... changes in stars, galaxies, and the universe over time. * Students know the solar system is located in an outer edge of the the disc-shaped Milky Way galaxy, which spans 100,000 light years * Students know that stars differ in their life cycles and that visual, radio, and X-ray telescopes may be use ...
The Family of Stars
... b) Any binary system with a combination of period P and separation a that obeys Kepler’s 3rd Law must have a total mass of 1 solar mass. ...
... b) Any binary system with a combination of period P and separation a that obeys Kepler’s 3rd Law must have a total mass of 1 solar mass. ...
The origin, life, and death of stars
... to compress and heat its core to the temperatures that trigger fusion If the mass is less than 0.08 x solar mass, it will form a Brown Dwarf Brown Dwarfs are not true stars, but they do give off small amounts of light as they cool ...
... to compress and heat its core to the temperatures that trigger fusion If the mass is less than 0.08 x solar mass, it will form a Brown Dwarf Brown Dwarfs are not true stars, but they do give off small amounts of light as they cool ...
neutron star - The University of Chicago
... Still a huge challenge to simulate properly on supercomputers. Nature does not care what astrophysicists do not understand. Type II and Type Ib/c supernovae continue to explode! ...
... Still a huge challenge to simulate properly on supercomputers. Nature does not care what astrophysicists do not understand. Type II and Type Ib/c supernovae continue to explode! ...
S1E4 Extreme Stars
... with nothing but hydrogen and helium.) • To make elements heavier than iron extra energy must be provided. • Supernova temperatures drive nuclei into each other at such high speeds that heavy elements can be made. • Gold, Silver, etc., -- any element heavier than iron, were all made during a superno ...
... with nothing but hydrogen and helium.) • To make elements heavier than iron extra energy must be provided. • Supernova temperatures drive nuclei into each other at such high speeds that heavy elements can be made. • Gold, Silver, etc., -- any element heavier than iron, were all made during a superno ...
Distances farther out
... Earlier CN break was used to get absolute mag. But now known , some stars (giants by all other criterion) - wrongly called dwarfs on basis on CN alone . (4215 A break was too weak to classify them as giants) . Coz of carbon & Nitrogen abundances, well below solar metal deficient pop II stars in ga ...
... Earlier CN break was used to get absolute mag. But now known , some stars (giants by all other criterion) - wrongly called dwarfs on basis on CN alone . (4215 A break was too weak to classify them as giants) . Coz of carbon & Nitrogen abundances, well below solar metal deficient pop II stars in ga ...
The Life CyCLe of STarS - Origins
... complete life cycle. The scientific model of a stellar life cycle is very solid, explaining many observations and successfully predicting the properties of new stars and star clusters that are discovered. How a star changes over its life cycle is described below. 33 Star Life. A typical star, like o ...
... complete life cycle. The scientific model of a stellar life cycle is very solid, explaining many observations and successfully predicting the properties of new stars and star clusters that are discovered. How a star changes over its life cycle is described below. 33 Star Life. A typical star, like o ...
Section 19.2
... • Stars that are smaller than the sun come in two main categories, dwarfs and neutron stars. • Sirius, the Dog Star, is the largest known white dwarf. ...
... • Stars that are smaller than the sun come in two main categories, dwarfs and neutron stars. • Sirius, the Dog Star, is the largest known white dwarf. ...
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 ...
Stars and constellations
... are much hotter in the middle of the core (over 2 million degrees) where the fusion reactions are producing energy. The bright star in Figure 6 is Altair in the constellation of Aquila. It has a surface temperature of about 8500 oC and is ten times as bright as the Sun. The reason it looks so much f ...
... are much hotter in the middle of the core (over 2 million degrees) where the fusion reactions are producing energy. The bright star in Figure 6 is Altair in the constellation of Aquila. It has a surface temperature of about 8500 oC and is ten times as bright as the Sun. The reason it looks so much f ...
PHYSICS OF THE SUN The Sun is a main
... We can derive the stellar “dynamical time” tD in several ways. Here’s a simple way to estimate the free-fall time: Imagine a test particle at distance R∗ from a point-mass M∗ at the center. Here, let’s assume that |a| = GM∗ /R∗2 stays constant over the time we’re considering. It’s Physics 101... ...
... We can derive the stellar “dynamical time” tD in several ways. Here’s a simple way to estimate the free-fall time: Imagine a test particle at distance R∗ from a point-mass M∗ at the center. Here, let’s assume that |a| = GM∗ /R∗2 stays constant over the time we’re considering. It’s Physics 101... ...
