
Chapter 13
... • Increased luminosity, expands outer surface to red supergiant sizes and temperature down to 2500 K • Carbon and silicon flakes (grains) form in this cool environment and are driven out by radiation pressure • The grains carry the gas into space – a planetary nebula is formed – and the inner core b ...
... • Increased luminosity, expands outer surface to red supergiant sizes and temperature down to 2500 K • Carbon and silicon flakes (grains) form in this cool environment and are driven out by radiation pressure • The grains carry the gas into space – a planetary nebula is formed – and the inner core b ...
Nova
... Roche lobe, gas moves into the Roche lobe of the companion star and is pulled in toward that star. This process of mass transfer is referred to as Roche lobe overflow. Binaries in this stage of mass transfer are called semi-detached binaries, because only one of the stars is actually in contact with ...
... Roche lobe, gas moves into the Roche lobe of the companion star and is pulled in toward that star. This process of mass transfer is referred to as Roche lobe overflow. Binaries in this stage of mass transfer are called semi-detached binaries, because only one of the stars is actually in contact with ...
Astronomy Assignment #10 Solutions
... 1. Two identical stars have different apparent brightnesses (fluxes). One star is 10 parsecs away from us and the other is 30 parsecs away from you. Which star is brighter and by how many times? The brightness of a star depends on two factors; its luminosity and its distance. This is summarized in L ...
... 1. Two identical stars have different apparent brightnesses (fluxes). One star is 10 parsecs away from us and the other is 30 parsecs away from you. Which star is brighter and by how many times? The brightness of a star depends on two factors; its luminosity and its distance. This is summarized in L ...
January 2006
... Theory and Experiment • Theory: – Need a theory for star formation – Need a theory to understand the energy production in stars make prediction how bight stars are when and for how long in their lifetimes ...
... Theory and Experiment • Theory: – Need a theory for star formation – Need a theory to understand the energy production in stars make prediction how bight stars are when and for how long in their lifetimes ...
Solutions: Doppler Effect
... At that time, Star B is moving directly away from Earth • Go to: http://www.howstuffworks.com/planet-hunting2.htm • Read the material and watch the animation. 7. How do we use the Doppler effect to help us detect the presence of planets around other stars? Because the planet tugs on the star (gravit ...
... At that time, Star B is moving directly away from Earth • Go to: http://www.howstuffworks.com/planet-hunting2.htm • Read the material and watch the animation. 7. How do we use the Doppler effect to help us detect the presence of planets around other stars? Because the planet tugs on the star (gravit ...
Young Stars
... •It burns at exactly the right rate to replace the energy lost •For the Sun, there is enough fuel in the central part to keep it burning steadily for 10 billion years •All stars are in a balance of pressure vs. gravity •To compensate for larger masses, they have to be bigger R M •They have lower d ...
... •It burns at exactly the right rate to replace the energy lost •For the Sun, there is enough fuel in the central part to keep it burning steadily for 10 billion years •All stars are in a balance of pressure vs. gravity •To compensate for larger masses, they have to be bigger R M •They have lower d ...
Today`s Powerpoint
... Such short-lived stars spend all their lives in the stellar nursery of their birth, so emission nebulae mark sites of ongoing star formation. Many stars of lower mass are forming too, but make few UV photons. Why "H II Region? H I: Hydrogen atom H II: Ionized Hydrogen ...
... Such short-lived stars spend all their lives in the stellar nursery of their birth, so emission nebulae mark sites of ongoing star formation. Many stars of lower mass are forming too, but make few UV photons. Why "H II Region? H I: Hydrogen atom H II: Ionized Hydrogen ...
Oct5
... Origin of the Elements * All the carbon, oxygen, etc on the Earth, (and in humans) was produced in the centers of stars. * Most carbon, oxygen comes from low-mass red giant winds * Most of the heavy elements come from supernovae * New stars form out of interstellar gas which has been enriched with ...
... Origin of the Elements * All the carbon, oxygen, etc on the Earth, (and in humans) was produced in the centers of stars. * Most carbon, oxygen comes from low-mass red giant winds * Most of the heavy elements come from supernovae * New stars form out of interstellar gas which has been enriched with ...
Laboratory Procedure (Word Format)
... Let us consider the above diagram where the earth is regarded as moving in a circular orbit about the sun. The star lies in the plane of the ecliptic and is assumed to be stationary at an indefinitely great distance from the sun. At point A in its orbit, the earth is moving directly away from the st ...
... Let us consider the above diagram where the earth is regarded as moving in a circular orbit about the sun. The star lies in the plane of the ecliptic and is assumed to be stationary at an indefinitely great distance from the sun. At point A in its orbit, the earth is moving directly away from the st ...
Compact stars
... collapse of an ordinary star to a neutron star would liberate a large amount of gravitational potential energy, providing a possible explanation for supernovae. This is the explanation for supernovae of types Ib, Ic, and II. Such supernovae occur when the iron core of a massive star exceeds the Chan ...
... collapse of an ordinary star to a neutron star would liberate a large amount of gravitational potential energy, providing a possible explanation for supernovae. This is the explanation for supernovae of types Ib, Ic, and II. Such supernovae occur when the iron core of a massive star exceeds the Chan ...
Astronomy and Space Science
... m, d, M, L, R, T are related. Both m and T are directly measurable, but d has to be obtained from observations like parallax. However, once d is found, M, L, R can be calculated easily. This is an amazing achievement - even to date, the radius can be measured directly, by resolving the stellar disk, ...
... m, d, M, L, R, T are related. Both m and T are directly measurable, but d has to be obtained from observations like parallax. However, once d is found, M, L, R can be calculated easily. This is an amazing achievement - even to date, the radius can be measured directly, by resolving the stellar disk, ...
Solutions Assignment #3
... The flux of solar radiation at the surface of this imaginary sphere is the luminosity of the Sun divided by the surface area of the sphere: 3.8 1026 watts 1344 watts per square meter 2.83 1023 m2 c. The average power per square meter collected by a solar collector on the ground will always be less b ...
... The flux of solar radiation at the surface of this imaginary sphere is the luminosity of the Sun divided by the surface area of the sphere: 3.8 1026 watts 1344 watts per square meter 2.83 1023 m2 c. The average power per square meter collected by a solar collector on the ground will always be less b ...
PHYS3380_102615_bw
... We have observed disks around other stars. These could be new planetary systems in formation. ...
... We have observed disks around other stars. These could be new planetary systems in formation. ...
David`s Mapping the Heavens[1]
... Stars are blazing balls of gas where many kinds of atoms emit light of all colours. If you look at the spectrum you should therefore see all colours of the spectrum present. ...
... Stars are blazing balls of gas where many kinds of atoms emit light of all colours. If you look at the spectrum you should therefore see all colours of the spectrum present. ...