Study Guide_galaxies, Tools, and Stars Test
... 3. What is the name of the galaxy our solar system is located in? 4. What type of galaxy is the Milky Way galaxy? 5. The ________ is the largest star in our solar system. 6. Name and describe the 3 types of galaxies. 7. Where is our solar system located in the Milky Way galaxy? 8. What is a light ye ...
... 3. What is the name of the galaxy our solar system is located in? 4. What type of galaxy is the Milky Way galaxy? 5. The ________ is the largest star in our solar system. 6. Name and describe the 3 types of galaxies. 7. Where is our solar system located in the Milky Way galaxy? 8. What is a light ye ...
ASTRONOMY 157 – Stars and Galaxies - Syllabus
... White dwarves: surface gravity, derivations of degenerate gas pressure, radius/mass, density, mass limit and visible lifetime ...
... White dwarves: surface gravity, derivations of degenerate gas pressure, radius/mass, density, mass limit and visible lifetime ...
File
... 15) What is an H-R Diagram. (be able to interpret an H-R diagram) 16) List in order the colors of stars from hottest to coolest. 17) What is a binary star system? ...
... 15) What is an H-R Diagram. (be able to interpret an H-R diagram) 16) List in order the colors of stars from hottest to coolest. 17) What is a binary star system? ...
Introduction to Astrophysics, Lecture 13
... While there is no doubt more material in the form of cold gas waiting to be made into stars, it is not believed that that will explain the difference. Instead, it is believed that most of the material in the galaxy is a new form of matter, known as dark matter. So far, we have little idea what form ...
... While there is no doubt more material in the form of cold gas waiting to be made into stars, it is not believed that that will explain the difference. Instead, it is believed that most of the material in the galaxy is a new form of matter, known as dark matter. So far, we have little idea what form ...
The Milky Way
... material compresses gas, heating it to about 106 K • Shockwave loses momentum when it sweeps up other material ...
... material compresses gas, heating it to about 106 K • Shockwave loses momentum when it sweeps up other material ...
The Mass of the Galaxy - University of California, Berkeley
... Having the spins aligned is a higher energy state. So in about 10 million years it will decay to the ground state (anti-aligned). Or a 21-cm photon can be absorbed and align the spins. Because the Galaxy is transparent, it is hard to tell where the emission is coming from along the line-of-sight. Bu ...
... Having the spins aligned is a higher energy state. So in about 10 million years it will decay to the ground state (anti-aligned). Or a 21-cm photon can be absorbed and align the spins. Because the Galaxy is transparent, it is hard to tell where the emission is coming from along the line-of-sight. Bu ...
The Milky Way - Indiana University Astronomy
... Where in the Galaxy Are We? The Local Neighborhood Top Milky Way Destinations! The Dark Heart of the Galaxy Formation of the Milky Way Our Galaxy in the Cosmos ...
... Where in the Galaxy Are We? The Local Neighborhood Top Milky Way Destinations! The Dark Heart of the Galaxy Formation of the Milky Way Our Galaxy in the Cosmos ...
HI in Local Group Dwarf Galaxies
... to our detection limits, and these upper limits are lower than the HI mass of any known dwarf which has HI. • Dwarf galaxies at smaller galactocentric distances have less HI on average than those at larger distances. • The HI -distance trend supports data from simulations which suggest ram-pressure ...
... to our detection limits, and these upper limits are lower than the HI mass of any known dwarf which has HI. • Dwarf galaxies at smaller galactocentric distances have less HI on average than those at larger distances. • The HI -distance trend supports data from simulations which suggest ram-pressure ...
Disk Galaxies: Structural Components
... • Disks are produced as the cloud of material spins faster and faster as the gravitational collapse progresses • To conserve angular momentum, the spin speed must increase inversely proportional to the decreasing size of the cloud • Spiral galaxies — contain much raw material (hydrogen gas) for star ...
... • Disks are produced as the cloud of material spins faster and faster as the gravitational collapse progresses • To conserve angular momentum, the spin speed must increase inversely proportional to the decreasing size of the cloud • Spiral galaxies — contain much raw material (hydrogen gas) for star ...
14.5 Galactic Spiral Arms
... What could this “dark matter” be? It is dark at all wavelengths, not just the visible. • Stellar-mass black holes? Probably no way enough could have been created ...
... What could this “dark matter” be? It is dark at all wavelengths, not just the visible. • Stellar-mass black holes? Probably no way enough could have been created ...
The Merger of Two Disk Galaxies
... two disk-shaped galaxies. Stars in the disk of each galaxy are colored blue, while stars in their central bulges are shown in yellow. Red indicates dark matter that surrounds each galaxy. The total elapsed time for this simulation is one billion years. ...
... two disk-shaped galaxies. Stars in the disk of each galaxy are colored blue, while stars in their central bulges are shown in yellow. Red indicates dark matter that surrounds each galaxy. The total elapsed time for this simulation is one billion years. ...
JSchreiberTalk3 - FSU High Energy Physics
... Mass from dark matter prevents rotation from tearing galaxies apart Measured speed of rotation implies ~1/10 dark matter of Milky Way This implies 100x more H should be present Would give illusion of rotation ...
... Mass from dark matter prevents rotation from tearing galaxies apart Measured speed of rotation implies ~1/10 dark matter of Milky Way This implies 100x more H should be present Would give illusion of rotation ...
Space - Milky Way
... a. The center is fairly flat, while the arms form a bulge b. The center is a spherical bulge, while the arms are relatively flat c. The center contains stars, while the arms contain only gas, planets, and dust d. The center contains dark matter, while the arms do not ...
... a. The center is fairly flat, while the arms form a bulge b. The center is a spherical bulge, while the arms are relatively flat c. The center contains stars, while the arms contain only gas, planets, and dust d. The center contains dark matter, while the arms do not ...
PowerPoint File
... Milky Way Galaxy Distance to the center of the globular cluster distribution: 8500 parsecs = 8.5 kiloparsecs ...
... Milky Way Galaxy Distance to the center of the globular cluster distribution: 8500 parsecs = 8.5 kiloparsecs ...
PowerPoint - Chandra X
... Chandra are in blue, broadband optical emission in yellow and optical H-alpha emission from hydrogen atoms in red. ...
... Chandra are in blue, broadband optical emission in yellow and optical H-alpha emission from hydrogen atoms in red. ...
A Reservoir of Ionized Gas in the Galactic Halo to Sustain Star
... may be a reservoir of such gas, but their distances are key for placing them in the Galactic halo and unraveling their role. We have used the Hubble Space Telescope to blindly search for ionized high-velocity clouds (iHVCs) in the fore−1 ground of Galactic stars. We show that iHVCs with 90 ≤ |vLSR | ...
... may be a reservoir of such gas, but their distances are key for placing them in the Galactic halo and unraveling their role. We have used the Hubble Space Telescope to blindly search for ionized high-velocity clouds (iHVCs) in the fore−1 ground of Galactic stars. We show that iHVCs with 90 ≤ |vLSR | ...
PX269 Galaxies The University of Warwick
... b) A Cepheid variable is discovered in a local galaxy with a period that is the same as a nearby Cepheid with parallax measured to be 3.3 mas. If the apparent magnitudes of the two stars are 26.6 and 4.0 respectively, what is the distance to the galaxy? c) How might this estimate be affected by inte ...
... b) A Cepheid variable is discovered in a local galaxy with a period that is the same as a nearby Cepheid with parallax measured to be 3.3 mas. If the apparent magnitudes of the two stars are 26.6 and 4.0 respectively, what is the distance to the galaxy? c) How might this estimate be affected by inte ...
Two prevailing theories on how the universe was created
... galaxy. This is a photo graph made by the Hubble telescope of deep space. What was once thought to be individual stars turned out to be huge collections of stars. ...
... galaxy. This is a photo graph made by the Hubble telescope of deep space. What was once thought to be individual stars turned out to be huge collections of stars. ...
Homework # 2, due 17 Feb
... 2. Do problem 2.7 in the text. 3. Suppose the number density of stars normal to the Galactic plane varies as n(z) = n0 exp(−z/zh ). Suppose you do a survey of stars in the direction of the North Galactic Pole complete to a magnitude mv = 30. What value would you obtain for V/V max ? 4. Do parts (a), ...
... 2. Do problem 2.7 in the text. 3. Suppose the number density of stars normal to the Galactic plane varies as n(z) = n0 exp(−z/zh ). Suppose you do a survey of stars in the direction of the North Galactic Pole complete to a magnitude mv = 30. What value would you obtain for V/V max ? 4. Do parts (a), ...
Universe, Earth, and The Solar System Characteristics of Stars
... The longevity of a star depends on its mass. After a star runs out of fuel, it can become a white dwarf, neutron start, or black hole. ...
... The longevity of a star depends on its mass. After a star runs out of fuel, it can become a white dwarf, neutron start, or black hole. ...
Astronomy 100, Fall 2006 Name: Due: December 5, 2006 at 11 a.m.
... all revolve at the same angular rate around the center, like they were stuck on a record on a turntable, and the “swirling taffy” model, in which stars at a certain distance from the center all move at the same angular rate, but stars at different distances move at different and not predictable rate ...
... all revolve at the same angular rate around the center, like they were stuck on a record on a turntable, and the “swirling taffy” model, in which stars at a certain distance from the center all move at the same angular rate, but stars at different distances move at different and not predictable rate ...
The Gas Disk Stellar halo Bulge (= bar) Disk
... • Massive interstellar gas clouds • Up to ~105 M • 100’s of LY in diameter. ...
... • Massive interstellar gas clouds • Up to ~105 M • 100’s of LY in diameter. ...
