Today`s Powerpoint
... C: They have much greater density than adjacent regions D: They have much higher temperature than adjacent regions ...
... C: They have much greater density than adjacent regions D: They have much higher temperature than adjacent regions ...
The power plant of the Sun and stars
... MS stars fuse hydrogen into helium, releasing prodigious amounts of energy in the process. Their fuel source is the matter of which they are made ...
... MS stars fuse hydrogen into helium, releasing prodigious amounts of energy in the process. Their fuel source is the matter of which they are made ...
The origin, life, and death of stars
... When hydrogen in the core starts to run low… In stars with masses more than 0.4 x solar mass, fusion slows down Outer layers of the star begin to swell and surface temperatures fall The shell surrounding the core begins to fuse hydrogen Stars move out of the Main Sequence ...
... When hydrogen in the core starts to run low… In stars with masses more than 0.4 x solar mass, fusion slows down Outer layers of the star begin to swell and surface temperatures fall The shell surrounding the core begins to fuse hydrogen Stars move out of the Main Sequence ...
PPT - McMaster Physics and Astronomy
... heavier ones, liberating energy (from E=mc^2) They therefore continuously evolve as their fuels are used up. H burns to He, He burns to C, etc… Stellar end-states: white dwarfs, neutron stars, or black ...
... heavier ones, liberating energy (from E=mc^2) They therefore continuously evolve as their fuels are used up. H burns to He, He burns to C, etc… Stellar end-states: white dwarfs, neutron stars, or black ...
Time and Diurnal Motion
... • 240 BC Was told that on midsummer day (June 21) in the town of Syene in southern Egypt (today Aswan, near a huge dam on the river Nile) the noontime Sun was reflected in a deep well, meaning that it was right overhead, at zenith. • But at Alexandria, on same day it was NOT overhead! ...
... • 240 BC Was told that on midsummer day (June 21) in the town of Syene in southern Egypt (today Aswan, near a huge dam on the river Nile) the noontime Sun was reflected in a deep well, meaning that it was right overhead, at zenith. • But at Alexandria, on same day it was NOT overhead! ...
E1 Introduction to the universe
... has no source of energy of its own, it contracts and heats up, and its gravity compresses the hydrogen in the layer immediately above it, causing it to fuse faster. This in turn causes the star to become more luminous (from 1,000 – 10,000 times brighter) and expand; the degree of expansion outstrips ...
... has no source of energy of its own, it contracts and heats up, and its gravity compresses the hydrogen in the layer immediately above it, causing it to fuse faster. This in turn causes the star to become more luminous (from 1,000 – 10,000 times brighter) and expand; the degree of expansion outstrips ...
NAME: CLASS: 1 Solar System Formation: PowerPoint Notes Sheet
... Solar System Formation: PowerPoint Notes Sheet ...
... Solar System Formation: PowerPoint Notes Sheet ...
Lecture 1: Observations of planetary systems
... planets, and are very strongly biased towards short-period planets3 . Note also that transits provide only orbital periods and planet radii; follow-up RV observations are required to determine planet masses. Ground-based transit surveys (primarily SuperWASP and HAT) have now discovered over 100 new ...
... planets, and are very strongly biased towards short-period planets3 . Note also that transits provide only orbital periods and planet radii; follow-up RV observations are required to determine planet masses. Ground-based transit surveys (primarily SuperWASP and HAT) have now discovered over 100 new ...
Exercise set five
... the observations. This gives you how many seconds shorter a sidereal day is than a solar day.) Do you trust some pairs of observations more than others? Why? Now you have six values for the length of the sidereal day, but we want to end up with one. Calculate the average value using at least four of ...
... the observations. This gives you how many seconds shorter a sidereal day is than a solar day.) Do you trust some pairs of observations more than others? Why? Now you have six values for the length of the sidereal day, but we want to end up with one. Calculate the average value using at least four of ...
Understanding Stars
... • Astronomers refer to the brightness of a star as the magnitude – apparent magnitude – how bright it looks from here • see Jan 9 or the week 2 lecture – Absolute magnitude – how bright the star would be at 10 parsecs. • Measure of how bright it really is – Reminder: small magnitudes are bright • A ...
... • Astronomers refer to the brightness of a star as the magnitude – apparent magnitude – how bright it looks from here • see Jan 9 or the week 2 lecture – Absolute magnitude – how bright the star would be at 10 parsecs. • Measure of how bright it really is – Reminder: small magnitudes are bright • A ...
lecture23
... All stars in a cluster are at about same distance from Earth. All stars in a cluster are of about the same age. Clusters therefore are natural laboratory in which mass, rather than age, of stars is only significant variable. ...
... All stars in a cluster are at about same distance from Earth. All stars in a cluster are of about the same age. Clusters therefore are natural laboratory in which mass, rather than age, of stars is only significant variable. ...
Watch - ggg999.org
... The granulation timescale and granulation PDs are 750 s and 18 ppm2/ µHz, while the amplitude of the pmodes are 5, 10, 15 ppm. ...
... The granulation timescale and granulation PDs are 750 s and 18 ppm2/ µHz, while the amplitude of the pmodes are 5, 10, 15 ppm. ...
Unit 1
... • William Herschel (who discovered the planet Uranus) created a “map” of the Milky Way, based on observations. • He incorrectly placed the Sun close to the center of the galaxy ...
... • William Herschel (who discovered the planet Uranus) created a “map” of the Milky Way, based on observations. • He incorrectly placed the Sun close to the center of the galaxy ...
powerpoint version
... If the mass of the core is more than about 3 solar masses the neutron degeneracy is overwhelmed and the core goes on collapsing. When the core diameter reaches the Schwarzschild radius (9 km for a 3 solar mass remnant) nothing, not even light, can escape. ...
... If the mass of the core is more than about 3 solar masses the neutron degeneracy is overwhelmed and the core goes on collapsing. When the core diameter reaches the Schwarzschild radius (9 km for a 3 solar mass remnant) nothing, not even light, can escape. ...
Nonfiction Text Feature
... How Does the Text Feature Help You as a Reader? Special types in a nonfiction text, help to expand our vocabulary by using context clues or the glossary to define the word. According to the text, galaxies are huge swarms of stars in space. This is an important vocabulary word in the text because the ...
... How Does the Text Feature Help You as a Reader? Special types in a nonfiction text, help to expand our vocabulary by using context clues or the glossary to define the word. According to the text, galaxies are huge swarms of stars in space. This is an important vocabulary word in the text because the ...
PHYS103 Hour Exam No. 1 Page: 1 1 Which of the following
... is out and there is a quarter Moon in the sky. He tells this story to a newspaper reporter who humors him and shows up to look for the monster the next time there is a low tide at sunset with a quarter moon. Sure enough, the monster appears. A local university then sends a biologist with a truckload ...
... is out and there is a quarter Moon in the sky. He tells this story to a newspaper reporter who humors him and shows up to look for the monster the next time there is a low tide at sunset with a quarter moon. Sure enough, the monster appears. A local university then sends a biologist with a truckload ...
Here
... • In modern times, it was discovered that the human eye has a nonlinear response to light: if one source of light has twice the light as a second source, then the first source would not appear by eye to be twice as bright. • The response of the eye is logarithmic, so that differences of magnitudes c ...
... • In modern times, it was discovered that the human eye has a nonlinear response to light: if one source of light has twice the light as a second source, then the first source would not appear by eye to be twice as bright. • The response of the eye is logarithmic, so that differences of magnitudes c ...
Ch 3 PPT - Blountstown Middle School
... 13-14 billion years old. • Scientists observe how space stretches by measuring the speed at which galaxies move away from the Earth. ...
... 13-14 billion years old. • Scientists observe how space stretches by measuring the speed at which galaxies move away from the Earth. ...
SOFIA Science - Stratospheric Observatory for Infrared Astronomy
... SOFIA’s Advantages What does SOFIA do that the Hubble Space Telescope can’t? ...
... SOFIA’s Advantages What does SOFIA do that the Hubble Space Telescope can’t? ...
how the Sun impacts the Earth
... Formation of the solar system • First question: how long ago did this happen? • Nobel Prize winner Hannes Alfven: “the study of the origin of the solar system is archaeology, not physics”. • Second question: what is the principal object in the solar system? • The answer to the second question expla ...
... Formation of the solar system • First question: how long ago did this happen? • Nobel Prize winner Hannes Alfven: “the study of the origin of the solar system is archaeology, not physics”. • Second question: what is the principal object in the solar system? • The answer to the second question expla ...