OUSNMAY06 - The George Abell Observatory
... CVn ds, (2.9,5.5) separation 19.6". Cor Coroli (Heart of Charles), A fine bluishwhite and white double star. NGC4151 (11.2) sg. Barred spiral with a bright nucleus. NGC4215 (10.5) ir. Located south and slightly west of NGC4244. NGC4244 (10.7) sg. Spiral galaxy seen edge-on appearing as a needle of ...
... CVn ds, (2.9,5.5) separation 19.6". Cor Coroli (Heart of Charles), A fine bluishwhite and white double star. NGC4151 (11.2) sg. Barred spiral with a bright nucleus. NGC4215 (10.5) ir. Located south and slightly west of NGC4244. NGC4244 (10.7) sg. Spiral galaxy seen edge-on appearing as a needle of ...
Essential Questions
... *While there are many slides for each topic, several slides within the notebook are hidden and won’t be used during instructional time. **HW Problems are currently not scaffolded from least to most difficult, but are instead listed in order of topic. Teacher should pay special attention at the end o ...
... *While there are many slides for each topic, several slides within the notebook are hidden and won’t be used during instructional time. **HW Problems are currently not scaffolded from least to most difficult, but are instead listed in order of topic. Teacher should pay special attention at the end o ...
Hubble - STScI
... Hubble provided astronomers with a “scrapbook” full of snapshots of the early universe. The scrapbook photographs revealed “toddler” galaxies that existed billions of years ago when the universe was young. The telescope snapped the pictures of the “deep” universe in a series of unique observations: ...
... Hubble provided astronomers with a “scrapbook” full of snapshots of the early universe. The scrapbook photographs revealed “toddler” galaxies that existed billions of years ago when the universe was young. The telescope snapped the pictures of the “deep” universe in a series of unique observations: ...
Goal: To understand the expansion of our universe.
... Quasars are QUASi-stellAR radio sources They were first observed in the 1950s. They looked like stars on an image. You can tell stars from galaxies because stars appear as a point (and have diffraction patterns if bright) but galaxies are more spread out. • However, when they looked at the spectrum, ...
... Quasars are QUASi-stellAR radio sources They were first observed in the 1950s. They looked like stars on an image. You can tell stars from galaxies because stars appear as a point (and have diffraction patterns if bright) but galaxies are more spread out. • However, when they looked at the spectrum, ...
HW #8 Answers (Due 10/21)
... formation and also which ones initiate star formation in a cloud and which are part of self-sustained star formation. Cloud collision with spiral arms – As molecular clouds orbit in a spiral galaxy they pass they periodically pass through an over density of gas which is related to the spiral density ...
... formation and also which ones initiate star formation in a cloud and which are part of self-sustained star formation. Cloud collision with spiral arms – As molecular clouds orbit in a spiral galaxy they pass they periodically pass through an over density of gas which is related to the spiral density ...
Our Place in Space
... International Space Station, Moon, Mars, Sun, Saturn, Pleiades, Orion Nebula, M13 Globular Cluster, Large Magellanic Cloud, Andromeda Galaxy, one of the Galaxy Clusters (Stephan’s Quintet or Virgo Supercluster; Although Stephan’s Quintet is further from Earth it is impossible for a student to kno ...
... International Space Station, Moon, Mars, Sun, Saturn, Pleiades, Orion Nebula, M13 Globular Cluster, Large Magellanic Cloud, Andromeda Galaxy, one of the Galaxy Clusters (Stephan’s Quintet or Virgo Supercluster; Although Stephan’s Quintet is further from Earth it is impossible for a student to kno ...
Supermassive Black Holes in Inactive Galaxies Encyclopedia of Astronomy & Astrophysics eaa.iop.org
... that M31 contains a central dark mass M• ≃ 3 × 107M⊙. The possible effects of velocity anisotropy have been checked and provide no escape. Furthermore, the asymmetry provides an almost independent check of the BH mass, as follows. The top panel of figure 3 shows the HST image at the same scale as an ...
... that M31 contains a central dark mass M• ≃ 3 × 107M⊙. The possible effects of velocity anisotropy have been checked and provide no escape. Furthermore, the asymmetry provides an almost independent check of the BH mass, as follows. The top panel of figure 3 shows the HST image at the same scale as an ...
Chapter 18 Notes - Valdosta State University
... electromagnetic radiation coming from matter swirling around them. Cygnus X-1 is thought to be a black hole taking matter away from a class O supergiant star near it. Cygnus X-1 is smaller than the Earth, yet seven times as massive as the Sun. About 100 million possible black holes have been detecte ...
... electromagnetic radiation coming from matter swirling around them. Cygnus X-1 is thought to be a black hole taking matter away from a class O supergiant star near it. Cygnus X-1 is smaller than the Earth, yet seven times as massive as the Sun. About 100 million possible black holes have been detecte ...
Supermassive Black Holes and the Growth of Galaxies
... cools and falls from the cosmic web into their large dark matter halos. This cooling gas would naturally form stars, thus producing massive, bulge-dominated galaxies with huge star formation rates and strikingly blue colours, in stark contrast to the observations showing that elliptical galaxies are ...
... cools and falls from the cosmic web into their large dark matter halos. This cooling gas would naturally form stars, thus producing massive, bulge-dominated galaxies with huge star formation rates and strikingly blue colours, in stark contrast to the observations showing that elliptical galaxies are ...
PH607lec08
... Colour: Large automated imaging surveys are better at defining a galaxy's colour rather than morphology. it is more natural to describe a galaxy as being on the ‘red sequence’ or ‘blue sequence’ rather than being an ‘early type’ or ‘late type’. This interpretation also has the advantage that galaxy ...
... Colour: Large automated imaging surveys are better at defining a galaxy's colour rather than morphology. it is more natural to describe a galaxy as being on the ‘red sequence’ or ‘blue sequence’ rather than being an ‘early type’ or ‘late type’. This interpretation also has the advantage that galaxy ...
Our Place in the Universe (Chapter 1) The Structure and Size of the
... • We’ve never observed anything like the edge of the Universe • Without any edges, there can’t be a “centre of the Universe” • Astronomers do know that the Universe must be larger than a certain size… ...
... • We’ve never observed anything like the edge of the Universe • Without any edges, there can’t be a “centre of the Universe” • Astronomers do know that the Universe must be larger than a certain size… ...
Powerpoint
... • We’ve never observed anything like the edge of the Universe • Without any edges, there can’t be a “centre of the Universe” • Astronomers do know that the Universe must be larger than a certain size… ...
... • We’ve never observed anything like the edge of the Universe • Without any edges, there can’t be a “centre of the Universe” • Astronomers do know that the Universe must be larger than a certain size… ...
script
... Background: Very few people have a comprehensive view of our place in the universe. They think about astronomical objects as disconnected elements, rather than an integrated system. This demonstration takes visitors from our Solar System, the part of the universe with which they are most familiar, o ...
... Background: Very few people have a comprehensive view of our place in the universe. They think about astronomical objects as disconnected elements, rather than an integrated system. This demonstration takes visitors from our Solar System, the part of the universe with which they are most familiar, o ...
PROBLEM SET #9 SOLUTIONS AST142 1. Quasar luminosity
... inside a galaxy. Suppose the stars in the center of the galaxy (in the bulge) have velocity dispersion 300 km/s. (a) Within what radius around the black hole does a circular orbit have to be in order to have a circular velocity that is larger than the random motions of the bulge stars? This radius i ...
... inside a galaxy. Suppose the stars in the center of the galaxy (in the bulge) have velocity dispersion 300 km/s. (a) Within what radius around the black hole does a circular orbit have to be in order to have a circular velocity that is larger than the random motions of the bulge stars? This radius i ...
Infrared Instrumentation & Observing Techniques
... The small and large scale radio source are aligned to within about 10 deg. The radio sources are aligned to within a few degrees of perpendicular to the “inner" (1 kpc) dust disk but are poorly aligned with the perpendicular to the larger dust lane. The Bardeen-Petterson effect will cause the b ...
... The small and large scale radio source are aligned to within about 10 deg. The radio sources are aligned to within a few degrees of perpendicular to the “inner" (1 kpc) dust disk but are poorly aligned with the perpendicular to the larger dust lane. The Bardeen-Petterson effect will cause the b ...
SGL 9 NGC Galaxy magnitude 9/10 observing challenge Up for
... Move the scope left to pint SE and down to 70 degrees Declination to Leo Minor. This galaxy is completely different in appearance. It is another spiral and it is only 20 million light years away but is presenting itself face on to us. It is next to a field star and the hazy patch and star make a nic ...
... Move the scope left to pint SE and down to 70 degrees Declination to Leo Minor. This galaxy is completely different in appearance. It is another spiral and it is only 20 million light years away but is presenting itself face on to us. It is next to a field star and the hazy patch and star make a nic ...
26.4 Groups of Stars
... The Milky Way’s flattened disk shape is caused by its rotation. The sun takes about 220 million years to complete one orbit around the galaxy’s center. Recent evidence suggests that there is a massive black hole at our galaxy’s center. Stars are forming in the galaxy's spiral arms. ...
... The Milky Way’s flattened disk shape is caused by its rotation. The sun takes about 220 million years to complete one orbit around the galaxy’s center. Recent evidence suggests that there is a massive black hole at our galaxy’s center. Stars are forming in the galaxy's spiral arms. ...
Chapter 5 Notes
... b. Beyond a black hole’s _________ __________ gravity operates as it would before the mass collapsed 7. Matter emitted by a star over its life time is recycled and can become part of a new __________ ...
... b. Beyond a black hole’s _________ __________ gravity operates as it would before the mass collapsed 7. Matter emitted by a star over its life time is recycled and can become part of a new __________ ...
WFIRST-2.4: What Every Astronomer Should Know
... In response to this opportunity, NASA commissioned a new SDT to create a design reference mission for WFIRST using one of these 2.4m telescopes. This short article describes the highlights of this DRM, hereafter referred to as WFIRST-2.4, and serves as an entry point to the much more detailed descri ...
... In response to this opportunity, NASA commissioned a new SDT to create a design reference mission for WFIRST using one of these 2.4m telescopes. This short article describes the highlights of this DRM, hereafter referred to as WFIRST-2.4, and serves as an entry point to the much more detailed descri ...
PHYSICS 1500 - ASTRONOMY TOTAL: 100 marks Section A Please
... In the unified model of active galaxies, which of the following factors explains the difference between Seyfert I and Seyfert II galaxies? (a) The rate at which the central black hole is consuming material (b) The thickness of the torus that obscures the accretion disk (c) The mass of the central bl ...
... In the unified model of active galaxies, which of the following factors explains the difference between Seyfert I and Seyfert II galaxies? (a) The rate at which the central black hole is consuming material (b) The thickness of the torus that obscures the accretion disk (c) The mass of the central bl ...
151 - ESO
... During one of these pulsations the size of the star also changes. The radius of the star can alter with 10-20%. Harvard astronomer Miss Henrietta Leavitt was the first person to determine distances using Cepheids. Therefor in 1912 she made it possible to prove that “spiral-nebulas” (?) are independe ...
... During one of these pulsations the size of the star also changes. The radius of the star can alter with 10-20%. Harvard astronomer Miss Henrietta Leavitt was the first person to determine distances using Cepheids. Therefor in 1912 she made it possible to prove that “spiral-nebulas” (?) are independe ...
Measuring the masses of clusters
... study the mass distribution (dark matter) in clusters by studying background galaxies that are “lensed” by the dark matter in the cluster •! Turns out he was right (again!), but this was not observationally feasible until the mid-1990’s for clusters •! Gravitational lensing first observed in quasars ...
... study the mass distribution (dark matter) in clusters by studying background galaxies that are “lensed” by the dark matter in the cluster •! Turns out he was right (again!), but this was not observationally feasible until the mid-1990’s for clusters •! Gravitational lensing first observed in quasars ...
Spectroscopic confirmation of a galaxy at redshift z=8.6
... intergalactic medium surrounding their host galaxies, cleared sightlines along which the light of the young galaxies could escape, and fundamentally altered the physical state of the intergalactic gas in the Universe continuously until the present day1,2. Observations of the cosmic microwave backgro ...
... intergalactic medium surrounding their host galaxies, cleared sightlines along which the light of the young galaxies could escape, and fundamentally altered the physical state of the intergalactic gas in the Universe continuously until the present day1,2. Observations of the cosmic microwave backgro ...
b) How to Create Large Disks despite Major Mergers
... • Strong gas outflows can selectively remove low angular momentum gas (but force resolution < 100pc is required) • Although mergers are expected to be common in CDM, this is not at odds with the existence of disks • Filamentary gas accretion leads to the building of disks at higher z than predicted ...
... • Strong gas outflows can selectively remove low angular momentum gas (but force resolution < 100pc is required) • Although mergers are expected to be common in CDM, this is not at odds with the existence of disks • Filamentary gas accretion leads to the building of disks at higher z than predicted ...
Evolution of galaxy morphology - Lecture 1 - NCRA-TIFR
... they show a broad range in their physical properties Understanding of galaxy formation and evolution is one of the main outstanding problems in modern cosmology there are ∼ 1011 galaxies in the observable universe typical total mass of 108 − 1012 M ncralogo ...
... they show a broad range in their physical properties Understanding of galaxy formation and evolution is one of the main outstanding problems in modern cosmology there are ∼ 1011 galaxies in the observable universe typical total mass of 108 − 1012 M ncralogo ...
Galaxy Zoo
Galaxy Zoo is a crowdsourced astronomy project which invites people to assist in the morphological classification of large numbers of galaxies. (e.g.) It is an example of citizen science as it enlists the help of members of the public to help in scientific research. There have been seven versions up to July 2014, which are outlined in this article. Galaxy Zoo is part of the Zooniverse, a group of citizen science projects.