PS 224, Fall 2014 HW 4
... Since their temperatures are similar, we need find out which one is brighter. But brightness depends on distance as well. So I would find a way to measure the distance to these stars. The further away one is the red giant. 3. Future Skies. As a red giant, the Sun will have an angular size in Earth’s ...
... Since their temperatures are similar, we need find out which one is brighter. But brightness depends on distance as well. So I would find a way to measure the distance to these stars. The further away one is the red giant. 3. Future Skies. As a red giant, the Sun will have an angular size in Earth’s ...
ISM&Galaxy
... able to know the luminosity of stars – even very distant stars… Or perhaps you can make use of globular clusters. Then there is the question of whether there is any absorption between the stars. ...
... able to know the luminosity of stars – even very distant stars… Or perhaps you can make use of globular clusters. Then there is the question of whether there is any absorption between the stars. ...
Summary: Nuclear burning in stars
... • Spiral arms have higher density than space between arms • Excess gravitational attraction slows down gas, stars when they pass through spiral arm in course of their orbits. • Î spiral arms are a traffic jam ...
... • Spiral arms have higher density than space between arms • Excess gravitational attraction slows down gas, stars when they pass through spiral arm in course of their orbits. • Î spiral arms are a traffic jam ...
notes
... placed it at the same distance that it currently is from our Sun (T = 5800 K) • We moved it to an M-type star (T = 3000 K) and placed it at the same distance that it currently is from our Sun • In each of these cases, where should we place the Earth to prevent these effects? ...
... placed it at the same distance that it currently is from our Sun (T = 5800 K) • We moved it to an M-type star (T = 3000 K) and placed it at the same distance that it currently is from our Sun • In each of these cases, where should we place the Earth to prevent these effects? ...
LIGO Star Chart
... shape. The best observations can be made from early September through December. ...
... shape. The best observations can be made from early September through December. ...
Astro 18 – Section Week 2
... The deeper absorption line at 760nm is caused by our atmosphere's oxygen molecule. The two absorption lines at 720 and 890nm (from methane) appear on Saturn and Titan, but the rings do not have them ...
... The deeper absorption line at 760nm is caused by our atmosphere's oxygen molecule. The two absorption lines at 720 and 890nm (from methane) appear on Saturn and Titan, but the rings do not have them ...
Astro 18 – Section Week 2
... The deeper absorption line at 760nm is caused by our atmosphere's oxygen molecule. The two absorption lines at 720 and 890nm (from methane) appear on Saturn and Titan, but the rings do not have them ...
... The deeper absorption line at 760nm is caused by our atmosphere's oxygen molecule. The two absorption lines at 720 and 890nm (from methane) appear on Saturn and Titan, but the rings do not have them ...
The Milky Way - Midlandstech
... Guidepost Stars form from the interstellar medium and reach stability fusing hydrogen in their cores. This chapter is about the long, stable middle age of stars on the main sequence and their old age as they swell to become giant stars. Here you will answer three essential questions: • What happens ...
... Guidepost Stars form from the interstellar medium and reach stability fusing hydrogen in their cores. This chapter is about the long, stable middle age of stars on the main sequence and their old age as they swell to become giant stars. Here you will answer three essential questions: • What happens ...
Star formation jeopardy
... gravitationally collapse, fragments,It heats up and spins faster. When the core temperature reaches 10 mill K, nuclear fusion begins (H into He). When outward pressure equals inward pressure the star enters the main sequence. ...
... gravitationally collapse, fragments,It heats up and spins faster. When the core temperature reaches 10 mill K, nuclear fusion begins (H into He). When outward pressure equals inward pressure the star enters the main sequence. ...
Stars and Galaxies Misconceptions
... are from other galaxies. All the stars we see with our “naked eyes” are in the Milky Way Galaxy –we cannot see individual stars in other galaxies without powerful telescopes. ...
... are from other galaxies. All the stars we see with our “naked eyes” are in the Milky Way Galaxy –we cannot see individual stars in other galaxies without powerful telescopes. ...
Approximately 14 billion years ago, all matter and energy was
... around 10 times the diameter of the Sun higher luminosity than the Sun relatively low temperature late stage of small to medium sized stars ...
... around 10 times the diameter of the Sun higher luminosity than the Sun relatively low temperature late stage of small to medium sized stars ...
Extension worksheet – Topic 6 - Cambridge Resources for the IB
... The luminosity of a star is accurately known but measurement of its apparent brightness is made difficult by the presence of dust in the interstellar medium. Suggest the effect this has on the measured distance to the star. ...
... The luminosity of a star is accurately known but measurement of its apparent brightness is made difficult by the presence of dust in the interstellar medium. Suggest the effect this has on the measured distance to the star. ...
Galaxy Classification - Starry Night Education
... Milky Way galaxy? a. The plane of the solar system is coincident with the plane of the galaxy. b. The plane of the solar system is perpendicular to that of the Milky Way. c. The plane of the solar system is inclined at a small angle to the plane of the galaxy. d. The angle between the plane of the s ...
... Milky Way galaxy? a. The plane of the solar system is coincident with the plane of the galaxy. b. The plane of the solar system is perpendicular to that of the Milky Way. c. The plane of the solar system is inclined at a small angle to the plane of the galaxy. d. The angle between the plane of the s ...
Ay123 Fall 2011 STELLAR STRUCTURE AND EVOLUTION Problem Set 1
... as a function of the total stellar mass (expressed in units of M⊙ ). At what mass does the radiation pressure become comparable to the ideal-gas pressure ? e. Write down an explicit expression for the total gravitational potential energy of this toy star, and verify that the virial theorem is exactl ...
... as a function of the total stellar mass (expressed in units of M⊙ ). At what mass does the radiation pressure become comparable to the ideal-gas pressure ? e. Write down an explicit expression for the total gravitational potential energy of this toy star, and verify that the virial theorem is exactl ...
PowerPoint File
... In post-Main-Sequence evolution, what you see on the surface is not a good indicator of what is happening deep in the interior ...
... In post-Main-Sequence evolution, what you see on the surface is not a good indicator of what is happening deep in the interior ...
2. A giant hand took one of the planets discovered
... 2. A giant hand took one of the planets discovered around other stars and put it in the solar system at the same distance from the sun as from its star. The mass of the planet is approximately that of Jupiter and the orbit is approximately that of Earth. These are the “hot Jupiters”, as big as Jupit ...
... 2. A giant hand took one of the planets discovered around other stars and put it in the solar system at the same distance from the sun as from its star. The mass of the planet is approximately that of Jupiter and the orbit is approximately that of Earth. These are the “hot Jupiters”, as big as Jupit ...
Chapter 1 - Colorado Mesa University
... • 1 km/s ~ 2200 miles/hour • The earth is moving (at the equator) ~ .5km/s • We orbit the sun at ~30 km/s The Sun orbits the center of the Milky Way at ~220 km/s (or 100,000 km/hr) • The Milky Way is moving ~552 km/s ...
... • 1 km/s ~ 2200 miles/hour • The earth is moving (at the equator) ~ .5km/s • We orbit the sun at ~30 km/s The Sun orbits the center of the Milky Way at ~220 km/s (or 100,000 km/hr) • The Milky Way is moving ~552 km/s ...
Star Formation: Interstellar Gas and Dust
... • Degenerate pressure of neutrons can support stars only up to 3M • For M > 3M: Further collapse Î black hole • Mass is so concentrated that light cannot escape. • One way to think about it: – vescape = 2GM/R becomes greater than speed of light. – So photons can’t escape. • Black holes now known o ...
... • Degenerate pressure of neutrons can support stars only up to 3M • For M > 3M: Further collapse Î black hole • Mass is so concentrated that light cannot escape. • One way to think about it: – vescape = 2GM/R becomes greater than speed of light. – So photons can’t escape. • Black holes now known o ...
20081 Study Guide_77-120
... 3. Answers will vary. A typical answer would be that the stars exhibit an apparent motion over a period of months that is similar to the apparent motion of the red plate in this investigation. In the case of the stars, the change in the observer’s location is the result of the earth’s orbit around t ...
... 3. Answers will vary. A typical answer would be that the stars exhibit an apparent motion over a period of months that is similar to the apparent motion of the red plate in this investigation. In the case of the stars, the change in the observer’s location is the result of the earth’s orbit around t ...
Life Cycle of Stars
... If more massive than 8 times the mass of the sun • Gravity finally wins and compresses everything to a mathematical point at the center. The point mass is a black hole. Only the most massive, very rare stars (greater than 10 solar masses) will form a black hole when they die ...
... If more massive than 8 times the mass of the sun • Gravity finally wins and compresses everything to a mathematical point at the center. The point mass is a black hole. Only the most massive, very rare stars (greater than 10 solar masses) will form a black hole when they die ...
Reading Preview
... A star’s ________ gives clues about the star’s temperature. The coolest stars appear ________. The hottest stars appear ________. Very large stars are called ________ stars or ____________ stars. Our sun is a medium sized ________. Most stars are ________ than the sun. White dwarf stars are abou ...
... A star’s ________ gives clues about the star’s temperature. The coolest stars appear ________. The hottest stars appear ________. Very large stars are called ________ stars or ____________ stars. Our sun is a medium sized ________. Most stars are ________ than the sun. White dwarf stars are abou ...