Word
... #3. The giant elliptical galaxy M87 has an accretion disk of material orbiting its central black hole. The Hubble Space Telescope observed the spectrum of this material and, from the Doppler shifts of the spectral lines, found that the material is orbiting at 550 km/sec at a distance of 40 pc from t ...
... #3. The giant elliptical galaxy M87 has an accretion disk of material orbiting its central black hole. The Hubble Space Telescope observed the spectrum of this material and, from the Doppler shifts of the spectral lines, found that the material is orbiting at 550 km/sec at a distance of 40 pc from t ...
HOMEWORK #1
... #3. The giant elliptical galaxy M87 has an accretion disk of material orbiting its central black hole. The Hubble Space Telescope observed the spectrum of this material and, from the Doppler shifts of the spectral lines, found that the material is orbiting at 550 km/sec at a distance of 40 pc from t ...
... #3. The giant elliptical galaxy M87 has an accretion disk of material orbiting its central black hole. The Hubble Space Telescope observed the spectrum of this material and, from the Doppler shifts of the spectral lines, found that the material is orbiting at 550 km/sec at a distance of 40 pc from t ...
Irregular Galaxies
... 1) Globular stars clusters are found in the halos of spiral galaxies and in elliptical galaxies. ...
... 1) Globular stars clusters are found in the halos of spiral galaxies and in elliptical galaxies. ...
The Sky is Our Laboratory
... What are the theories about black holes? Where do quasars come into the picture? What is a quasar? What is the big, main bright core in the middle of galaxies? How many different types of galaxies are there? What is the Local Group? What is a satellite galaxy? What will eventually happen to the Univ ...
... What are the theories about black holes? Where do quasars come into the picture? What is a quasar? What is the big, main bright core in the middle of galaxies? How many different types of galaxies are there? What is the Local Group? What is a satellite galaxy? What will eventually happen to the Univ ...
First Stars, Quasars and Reionization Observations
... – Pop II: [Fe/H] poor stars, spiral galaxy halos and elliptical galaxies ...
... – Pop II: [Fe/H] poor stars, spiral galaxy halos and elliptical galaxies ...
CH 15 SEC 4 STAR SYSTEMS AND GALAXIES
... KEY ASTRONOMERS STUDY OBJECTS AS CLOSE AS THE MOON AND AS FAR AWAY AS QUASARS QUASARS- ARE THE MOST DISTANT OBJECTS IN THE ...
... KEY ASTRONOMERS STUDY OBJECTS AS CLOSE AS THE MOON AND AS FAR AWAY AS QUASARS QUASARS- ARE THE MOST DISTANT OBJECTS IN THE ...
Extragalactic AO Science
... OII, 4000 Break in J band This is probably the formation epoch of MW-like disks (1” diameter). ...
... OII, 4000 Break in J band This is probably the formation epoch of MW-like disks (1” diameter). ...
Which of the following is the best description of an Sc galaxy? A) a
... D) they are greatly obscured by interstellar dust How do we know that quasars are no larger than the solar system? A) they vary in brightness on a timescale of days or weeks B) they appear point-like when viewed through a telescope C) they contain black holes, which must be small D) they are too lum ...
... D) they are greatly obscured by interstellar dust How do we know that quasars are no larger than the solar system? A) they vary in brightness on a timescale of days or weeks B) they appear point-like when viewed through a telescope C) they contain black holes, which must be small D) they are too lum ...
What MSU Astronomers Will Do with the SOAR
... • Recently formed test details of “bottom-up” formation scenario • Evolution of cluster population sensitive probe of Dark Matter and Dark Energy • Best “fair sample” of matter content of Universe • Dark vs. normal matter ...
... • Recently formed test details of “bottom-up” formation scenario • Evolution of cluster population sensitive probe of Dark Matter and Dark Energy • Best “fair sample” of matter content of Universe • Dark vs. normal matter ...
Linking Asteroids and Meteorites through Reflectance Spectroscopy
... • A galaxy that emits unusually large quantities of radio waves • Thought to contain an active galactic nuclei ...
... • A galaxy that emits unusually large quantities of radio waves • Thought to contain an active galactic nuclei ...
final review sheet
... 3) If the distance between the Sun and the Earth increased by a factor of 2, the Sun’s luminosity would decrease by a factor of 4. 4) Pre-main sequence stars release energy by nuclear reactions which turn hydrogen into helium. 5) Astronomers can determine the age of clusters by looking at the distri ...
... 3) If the distance between the Sun and the Earth increased by a factor of 2, the Sun’s luminosity would decrease by a factor of 4. 4) Pre-main sequence stars release energy by nuclear reactions which turn hydrogen into helium. 5) Astronomers can determine the age of clusters by looking at the distri ...
Galaxies: 33.1
... much smaller. Stars like our sun form when a mass of hydrogen collapses under its own gravity and the intense pressure initiates a nuclear reaction, emitting light and energy. Brown dwarfs are different from normal stars, because of their relatively low mass, Brown dwarfs do not have enough gravity ...
... much smaller. Stars like our sun form when a mass of hydrogen collapses under its own gravity and the intense pressure initiates a nuclear reaction, emitting light and energy. Brown dwarfs are different from normal stars, because of their relatively low mass, Brown dwarfs do not have enough gravity ...
Galaxies
... Population II – red, old, found in bulge and halo, elliptical orbits, low concentration of heavy elements Probably smooth transition between end members (i.e. the sun). ? Population III ? – pure H and He ...
... Population II – red, old, found in bulge and halo, elliptical orbits, low concentration of heavy elements Probably smooth transition between end members (i.e. the sun). ? Population III ? – pure H and He ...
Star Factories at the End of the World - Max-Planck
... search that has practically nothing to do with the colorful photos that astronomy otherwise produces. Many of these typical, vivid photographs are hanging in the stairwell of the Heidelberg-based institute, a concrete structure located on the Königstuhl promontory high above the city. They show plan ...
... search that has practically nothing to do with the colorful photos that astronomy otherwise produces. Many of these typical, vivid photographs are hanging in the stairwell of the Heidelberg-based institute, a concrete structure located on the Königstuhl promontory high above the city. They show plan ...
Slide 1
... Emit radio waves, IR, visible, X rays Most luminous objects (like 20 trillion suns) Larger & more massive than any known star Radiate light and radio waves at high rates May be whole galaxies in early stage of development, but so distant that we can’t see the galaxy itself. ...
... Emit radio waves, IR, visible, X rays Most luminous objects (like 20 trillion suns) Larger & more massive than any known star Radiate light and radio waves at high rates May be whole galaxies in early stage of development, but so distant that we can’t see the galaxy itself. ...
Black Holes: Edge of Infinity Jonathan McKinney
... Static Limit: Inside, objects cannot be static (varies from 1rH to 2rH for a=M) Horizon or Schwarzschild radius: Inside rH, objects must fall Singularity: Near, physics breaks down (need quantum gravity), reached in finite time ...
... Static Limit: Inside, objects cannot be static (varies from 1rH to 2rH for a=M) Horizon or Schwarzschild radius: Inside rH, objects must fall Singularity: Near, physics breaks down (need quantum gravity), reached in finite time ...
PHYSICS 113 Assignment #9 SOLUTIONS Chapter 17 13. Starting
... outpouring of energy from quasars?" How would you respond? Since black holes have mass, they have gravity and thus they attract matter towards them. When this matter moves inside the event horizon (also known as the Schwarzschild radius), it is no longer observable. This is because even light is tra ...
... outpouring of energy from quasars?" How would you respond? Since black holes have mass, they have gravity and thus they attract matter towards them. When this matter moves inside the event horizon (also known as the Schwarzschild radius), it is no longer observable. This is because even light is tra ...
AGN
... • Detection of an optical jet in M87 (Curtis 1913) • Same period: Einstein develops GR, Schwarzschild metric (1916), but no connection seen yet • Hubble (1926) - Nebulae are extragalactic (galaxies) • Carl Seyfert (1943) - found several galaxies similar to NGC1068 (henceforth named Seyfert galaxies) ...
... • Detection of an optical jet in M87 (Curtis 1913) • Same period: Einstein develops GR, Schwarzschild metric (1916), but no connection seen yet • Hubble (1926) - Nebulae are extragalactic (galaxies) • Carl Seyfert (1943) - found several galaxies similar to NGC1068 (henceforth named Seyfert galaxies) ...
Astronomy Quiz #1 Answers
... 7. What are the two important discoveries made by Edwin Hubble? -many galaxies existed beyond the Milky Way -almost all galaxies are moving away from each other ...
... 7. What are the two important discoveries made by Edwin Hubble? -many galaxies existed beyond the Milky Way -almost all galaxies are moving away from each other ...
Chapter 30.3 Star Groups
... • Takes sun 225 million years to complete one orbit. • Closest galaxies are 170,000 l.y. away from Earth. ...
... • Takes sun 225 million years to complete one orbit. • Closest galaxies are 170,000 l.y. away from Earth. ...
ONLINE practice exam
... d.) Reduce the mass of the ship by throwing almost everything overboard. e.) Fall into the black hole and get frozen at its horizon. 3. What is actually located at the event horizon of a black hole? a.) Nothing b.) an infinitely dense concentration of mass c.) The outer boundary of a wormhole d.) a ...
... d.) Reduce the mass of the ship by throwing almost everything overboard. e.) Fall into the black hole and get frozen at its horizon. 3. What is actually located at the event horizon of a black hole? a.) Nothing b.) an infinitely dense concentration of mass c.) The outer boundary of a wormhole d.) a ...
Post-class version
... Your report will be due at the final exam, Wednesday, April 30. Not required if you have already been to Brooks this semester & written a report. As before, take elevator to 5th floor of this building, walk up to 6th floor. Bring your blue ticket with your name and my name (Nancy Morrison) written o ...
... Your report will be due at the final exam, Wednesday, April 30. Not required if you have already been to Brooks this semester & written a report. As before, take elevator to 5th floor of this building, walk up to 6th floor. Bring your blue ticket with your name and my name (Nancy Morrison) written o ...
Quasar
Quasars (/ˈkweɪzɑr/) or quasi-stellar radio sources are the most energetic and distant members of a class of objects called active galactic nuclei (AGN). Quasars are extremely luminous and were first identified as being high redshift sources of electromagnetic energy, including radio waves and visible light, that appeared to be similar to stars, rather than extended sources similar to galaxies. Their spectra contain very broad emission lines, unlike any known from stars, hence the name ""quasi-stellar."" Their luminosity can be 100 times greater than that of the Milky Way. Most quasars were formed approximately 12 billion years ago caused by collisions of galaxies and their central black holes merging to form either a supermassive black hole or a Binary black hole system.Although the true nature of these objects was controversial until the early 1980s, there is now a scientific consensus that a quasar is a compact region in the center of a massive galaxy surrounding a central supermassive black hole. Its size is 10–10,000 times the Schwarzschild radius of the black hole. The energy emitted by a quasar derives from mass falling onto the accretion disc around the black hole.