Lecture (Powerpoint)
... Either we are very special and everything is moving away from us, or Universe as a whole is expanding But if universe is steadily increasing in size, implies that at some time in the past, Universe was a single point. `Start of the Universe’ ...
... Either we are very special and everything is moving away from us, or Universe as a whole is expanding But if universe is steadily increasing in size, implies that at some time in the past, Universe was a single point. `Start of the Universe’ ...
30galaxies and the universe
... Black holes in the centers of giant galaxies—some more than one billion solar masses—had enough infalling gas to once blaze as quasars. The final mass of a black hole is not primordial, but instead is determined during the galaxy formation process. This shows that there is a close relationship betwe ...
... Black holes in the centers of giant galaxies—some more than one billion solar masses—had enough infalling gas to once blaze as quasars. The final mass of a black hole is not primordial, but instead is determined during the galaxy formation process. This shows that there is a close relationship betwe ...
NIE10x301Sponsor Thank You (Page 1)
... featureless balls of stars flattened to various degrees, but they cover an enormous range of sizes, from dwarfs to titanic giants formed from galaxy mergers with over a trillion stars! Galaxies are typically spread throughout the universe in groups and clusters. Our own neck of the woods in the cosm ...
... featureless balls of stars flattened to various degrees, but they cover an enormous range of sizes, from dwarfs to titanic giants formed from galaxy mergers with over a trillion stars! Galaxies are typically spread throughout the universe in groups and clusters. Our own neck of the woods in the cosm ...
Dark Matter Spiral Structure Basic Galaxy Morphology Disk Galaxy Rotation Curves:
... Galaxy types or families can be defined in a parameter space of various measured/physical quantities. Different galaxy families follow different correlations. Incomplete - misses the major dichotomy of dwarf and giant (traditional Hubble sequence) galaxies Dwarfs also exist in gas rich / gas poor, s ...
... Galaxy types or families can be defined in a parameter space of various measured/physical quantities. Different galaxy families follow different correlations. Incomplete - misses the major dichotomy of dwarf and giant (traditional Hubble sequence) galaxies Dwarfs also exist in gas rich / gas poor, s ...
Place in Space
... distance that light can travel in one year. In one year light travels about 9,460,000,000,000 kilometres. So, this distance is 1 lightyear. ...
... distance that light can travel in one year. In one year light travels about 9,460,000,000,000 kilometres. So, this distance is 1 lightyear. ...
A minimum column density of 1gcm(
... The tracks shown are computed using a one-zone protostellar evolution code9 applied to the accretion histories predicted previously9,30 using their fiducial parameters, for protostellar cores born in environments where the column density is S 5 0.1, 1.0 or 10.0 g cm22 as indicated. However, alternat ...
... The tracks shown are computed using a one-zone protostellar evolution code9 applied to the accretion histories predicted previously9,30 using their fiducial parameters, for protostellar cores born in environments where the column density is S 5 0.1, 1.0 or 10.0 g cm22 as indicated. However, alternat ...
Stars and Constellations Power Point
... The brightest constellation is Crux (the Southern Cross). The constellation with the greatest number of visible stars in it is Centaurus (the Centaur - with 101 stars). The largest constellation is Hydra (The Water Snake) which extends over 3.158% of the sky. ...
... The brightest constellation is Crux (the Southern Cross). The constellation with the greatest number of visible stars in it is Centaurus (the Centaur - with 101 stars). The largest constellation is Hydra (The Water Snake) which extends over 3.158% of the sky. ...
answers2008_09_BC
... branch on HRD (where depends on heavy element content) [1] When He exhausted in core, He fusion starts in shell, and star reascends red giant branch. At this stage it is very unstable and loses mass through stellar wind. Eventually all outer layers will be lost, forming a planetary nebula, and He ...
... branch on HRD (where depends on heavy element content) [1] When He exhausted in core, He fusion starts in shell, and star reascends red giant branch. At this stage it is very unstable and loses mass through stellar wind. Eventually all outer layers will be lost, forming a planetary nebula, and He ...
File - Etna FFA Agriculture
... Size: The disk of the Milky Way galaxy is about 100,000 light years in diameter (one light year is about 9.5 x 1015 meters), but only about 1000 light years thick. Our Galaxy contains about 200 billion stars. Most of the stars are located in the disk of our galaxy, which is the site of most of the s ...
... Size: The disk of the Milky Way galaxy is about 100,000 light years in diameter (one light year is about 9.5 x 1015 meters), but only about 1000 light years thick. Our Galaxy contains about 200 billion stars. Most of the stars are located in the disk of our galaxy, which is the site of most of the s ...
Monster of the Milky Way
... Monster of the Milky Way 1. When a star goes supernova it can produce a ___________________________. 2. What happens to something when it falls into a black hole? 3. What might be the monster of the Milky Way? 4. What shrouds (hides) the center of the Milky Way? 5. What longer wavelength light gets ...
... Monster of the Milky Way 1. When a star goes supernova it can produce a ___________________________. 2. What happens to something when it falls into a black hole? 3. What might be the monster of the Milky Way? 4. What shrouds (hides) the center of the Milky Way? 5. What longer wavelength light gets ...
Pre-Main Sequence Evolution
... The Milky Way has several thousand of these objects, each with masses of 104 M8< M < 107 M8, and sizes between 10 and 100 pc. Although the average density of these clouds is ~ 100 cm-3, these objects are very clumpy, with large numbers of colder, dense cores. Orion is the one of the nearest (but n ...
... The Milky Way has several thousand of these objects, each with masses of 104 M8< M < 107 M8, and sizes between 10 and 100 pc. Although the average density of these clouds is ~ 100 cm-3, these objects are very clumpy, with large numbers of colder, dense cores. Orion is the one of the nearest (but n ...
UV-Optical Colors as Probes of Early-Type Galaxy Evolution
... GALICS:Galaxies In Cosmological Simulations “The GalICS model developed at the IAP explicitly intends to address the issue of the highredshift star formation rate history in a multi-wavelength prospect, from the ultraviolet to the submillimetre range.” Project site at: http://galics.cosmologie.fr/ ...
... GALICS:Galaxies In Cosmological Simulations “The GalICS model developed at the IAP explicitly intends to address the issue of the highredshift star formation rate history in a multi-wavelength prospect, from the ultraviolet to the submillimetre range.” Project site at: http://galics.cosmologie.fr/ ...
PH607lec12-10agn2
... Check for consistency: Schwarzschild radius is the radius where the “escape velocity” equals the speed of light around a black hole of mass M: RS = 2GM/c2 It relates mass and size! Accretion: Continuum emission powered by gas falling onto central black hole, At a rate of one solar mass per year, l ...
... Check for consistency: Schwarzschild radius is the radius where the “escape velocity” equals the speed of light around a black hole of mass M: RS = 2GM/c2 It relates mass and size! Accretion: Continuum emission powered by gas falling onto central black hole, At a rate of one solar mass per year, l ...
PHYSICS 1500 - The University of Sydney
... The density of Comet Halley was found to be about 200 kg.m-3 (0.2 g.cm-3). What does this suggest about Comet Halley? (a) It is composed of about 50% rock and 50% frozen water and methane. (b) It is loosely packed ices with a small amount of rocky material. (c) It formed in the inner solar system an ...
... The density of Comet Halley was found to be about 200 kg.m-3 (0.2 g.cm-3). What does this suggest about Comet Halley? (a) It is composed of about 50% rock and 50% frozen water and methane. (b) It is loosely packed ices with a small amount of rocky material. (c) It formed in the inner solar system an ...
Colonization of the Milky Way The distances between the stars are
... They wouldn’t even have to do it themselves. Another possibility would be to send selfreplicating machines that make copies of themselves from the local resources of any system they found. Incidentally, this argument does not work when we consider the distances between galaxies. For example, the nea ...
... They wouldn’t even have to do it themselves. Another possibility would be to send selfreplicating machines that make copies of themselves from the local resources of any system they found. Incidentally, this argument does not work when we consider the distances between galaxies. For example, the nea ...
Stars
... Sizes of galaxies The smallest galaxy is Wilman 1 which is 120,000 light years away from the Milky way. The biggest galaxy was the IC 1101. It is 1 billion light years away. IC 1101 is six million light years in size. The galaxy sixty times larger then the milky way. When you look up at night do yo ...
... Sizes of galaxies The smallest galaxy is Wilman 1 which is 120,000 light years away from the Milky way. The biggest galaxy was the IC 1101. It is 1 billion light years away. IC 1101 is six million light years in size. The galaxy sixty times larger then the milky way. When you look up at night do yo ...
HW8 - UCSB Physics
... 21.50) Let us begin with the proof. In the previous solution it was stated that the volume of a black hole is given by V = 43 πrs3 . To find out the mass dependency of this equation we need to recall that the Schwarzschild radius is defined as rs = 2GM c2 . Substituting into our equation for V we fi ...
... 21.50) Let us begin with the proof. In the previous solution it was stated that the volume of a black hole is given by V = 43 πrs3 . To find out the mass dependency of this equation we need to recall that the Schwarzschild radius is defined as rs = 2GM c2 . Substituting into our equation for V we fi ...
The First Stars - Amazon Web Services
... radiation to gas pressure for a series of globes of gas of various sizes, stating say, with a globe of mass 10gm, then 100 gm, 1000 gm and so on, so that her nth globe contains 10n gm. Regarded as a tussle between gas pressure and radiation pressure, the contest is overwhelmingly one-sided except be ...
... radiation to gas pressure for a series of globes of gas of various sizes, stating say, with a globe of mass 10gm, then 100 gm, 1000 gm and so on, so that her nth globe contains 10n gm. Regarded as a tussle between gas pressure and radiation pressure, the contest is overwhelmingly one-sided except be ...
www.astro.utu.fi
... Near sun: km/s Outer halo: km/s Orbits of stars very different in outer halo (round) compared to near Sun (elliptical). ...
... Near sun: km/s Outer halo: km/s Orbits of stars very different in outer halo (round) compared to near Sun (elliptical). ...
Astronomy 104: Homework Set 6 Due: Wednesday, April 1, 2015
... about 100 Mpc from the Sun. Report on the basic properties of the cluster (distance, velocity dispersion, content, mass, size, etc.) and report on one or two of its unique or particularly noteworthy features. ...
... about 100 Mpc from the Sun. Report on the basic properties of the cluster (distance, velocity dispersion, content, mass, size, etc.) and report on one or two of its unique or particularly noteworthy features. ...
Clase-06_Star_Formation - Departamento de Astronomía
... global (or super) winds are also found, powered by energy of starlight, stellar winds and supernovae associated very luminous compact star clusters (up to 108 L) frequently occur (if these objects have a normal IMF, and remain gravitationally bound after the mass loss from massive members is co ...
... global (or super) winds are also found, powered by energy of starlight, stellar winds and supernovae associated very luminous compact star clusters (up to 108 L) frequently occur (if these objects have a normal IMF, and remain gravitationally bound after the mass loss from massive members is co ...
Chapter 31 Galaxies & the Universe
... and may range in sizes up to 30 million ly. In a cluster, most of the inner region galaxies are ellipticals. Galaxies in the outer portions are a mix of ellipticals and spirals. The galaxies often merge to form strangely shaped galaxies with more than one nucleus. Possible example: Local Group. ...
... and may range in sizes up to 30 million ly. In a cluster, most of the inner region galaxies are ellipticals. Galaxies in the outer portions are a mix of ellipticals and spirals. The galaxies often merge to form strangely shaped galaxies with more than one nucleus. Possible example: Local Group. ...
Ay122a&Fall&2015+16& Background&subtrac9on,&calibra9on,& analysis& &
... Although&the&background&responds&to&the&QE/flat&field,&it&may&and&oQen&will& illuminate&the&detector&non+uniformly,&i.e.&differently&than&does&an& astronomical&source&located&at&infinity.&&&Background&is&composed&of:& • Thermal&emission&from&telescope&components& • Stray&or&scaVered&light&from&out&of& ...
... Although&the&background&responds&to&the&QE/flat&field,&it&may&and&oQen&will& illuminate&the&detector&non+uniformly,&i.e.&differently&than&does&an& astronomical&source&located&at&infinity.&&&Background&is&composed&of:& • Thermal&emission&from&telescope&components& • Stray&or&scaVered&light&from&out&of& ...
Test#4
... 27. The very rapid orbital speed detected near the center of our galaxy suggests that a) our galaxy has a lot of stored angular momentum, b) massive stars are at the center c) a black hole is at the center, d) we have been in a collision in the past 28. What causes Cepheid variables to vary in brigh ...
... 27. The very rapid orbital speed detected near the center of our galaxy suggests that a) our galaxy has a lot of stored angular momentum, b) massive stars are at the center c) a black hole is at the center, d) we have been in a collision in the past 28. What causes Cepheid variables to vary in brigh ...