Galaxies - science1d
... Oooo-aaaah! •The most distant galaxies are _____________________ away •When light left them, the Earth did not exist!! ...
... Oooo-aaaah! •The most distant galaxies are _____________________ away •When light left them, the Earth did not exist!! ...
15-3 Notes: Galaxies
... clouds and star clusters are also located within galaxies. In space, nebulas are large clouds of gas and dust that are the birthplaces of stars. Some nebulas glow, others absorb light and hide stars, while others reflect starlight. A globular cluster is a highly concentrated group of stars that look ...
... clouds and star clusters are also located within galaxies. In space, nebulas are large clouds of gas and dust that are the birthplaces of stars. Some nebulas glow, others absorb light and hide stars, while others reflect starlight. A globular cluster is a highly concentrated group of stars that look ...
In Far Off Distant Galaxies: Classification by Shape
... Object A is a star in the fore ground (located between observer and Virgo Cluster). They are bright Milky Way Galaxy stars showing diffraction spikes (an artifact of the telescope). Object B is a spiral galaxy in the Virgo Cluster. It is disk shaped with arms. The two or more arms are visible due to ...
... Object A is a star in the fore ground (located between observer and Virgo Cluster). They are bright Milky Way Galaxy stars showing diffraction spikes (an artifact of the telescope). Object B is a spiral galaxy in the Virgo Cluster. It is disk shaped with arms. The two or more arms are visible due to ...
7.2 Galaxies
... All galaxies contain stars, planets, and dust. Galaxies with more dust than others tend to produce more new stars, because stars form from dust and gases present in nebulae. Very ancient galaxies have almost no dust because it has all been used up in star-making. Ancient galaxies are thought t ...
... All galaxies contain stars, planets, and dust. Galaxies with more dust than others tend to produce more new stars, because stars form from dust and gases present in nebulae. Very ancient galaxies have almost no dust because it has all been used up in star-making. Ancient galaxies are thought t ...
Powerpoint
... Type Sa has the largest central bulge, Type Sb is smaller, and Type Sc is the smallest. Type Sa tends to have the most tightly bound spiral arms, with Types Sb and Sc progressively less tight, although the correlation is not perfect. The components of spiral galaxies are the same as in our own Galax ...
... Type Sa has the largest central bulge, Type Sb is smaller, and Type Sc is the smallest. Type Sa tends to have the most tightly bound spiral arms, with Types Sb and Sc progressively less tight, although the correlation is not perfect. The components of spiral galaxies are the same as in our own Galax ...
Chapter 15
... • What is the power source for quasars and other active galactic nuclei? — The only model that adequately explains our observations holds that supermassive black holes are the power source. ...
... • What is the power source for quasars and other active galactic nuclei? — The only model that adequately explains our observations holds that supermassive black holes are the power source. ...
Poster - Arkansas Center for Space and Planetary Sciences
... We have examined a set of 125 spiral galaxies lying in the Chandra Deep Field South for which we have redshifts & pitch angles from previous work. Upon cross-referencing this set with the larger & comprehensive COMBO-17 survey, we found a cluster that is confirmed by recent literature. When comparin ...
... We have examined a set of 125 spiral galaxies lying in the Chandra Deep Field South for which we have redshifts & pitch angles from previous work. Upon cross-referencing this set with the larger & comprehensive COMBO-17 survey, we found a cluster that is confirmed by recent literature. When comparin ...
Document
... which Mkn 205 is 14 times farther away at a distance of 1 billion light year. The very distant quasar is nearly as bright as the much closer galaxy. The extraordinary brightness of quasars, which is a blending of the term quasi-stellar radio source, indicates that some incredibly powerful mechanism ...
... which Mkn 205 is 14 times farther away at a distance of 1 billion light year. The very distant quasar is nearly as bright as the much closer galaxy. The extraordinary brightness of quasars, which is a blending of the term quasi-stellar radio source, indicates that some incredibly powerful mechanism ...
Galaxies
... which Mkn 205 is 14 times farther away at a distance of 1 billion light year. The very distant quasar is nearly as bright as the much closer galaxy. The extraordinary brightness of quasars, which is a blending of the term quasi-stellar radio source, indicates that some incredibly powerful mechanism ...
... which Mkn 205 is 14 times farther away at a distance of 1 billion light year. The very distant quasar is nearly as bright as the much closer galaxy. The extraordinary brightness of quasars, which is a blending of the term quasi-stellar radio source, indicates that some incredibly powerful mechanism ...
Document
... Elliptical galaxies are affectionately called “E” galaxies. They can be extremely large and massive. This galaxy is 2 million light years across. The size of the Milky Way in comparison! ...
... Elliptical galaxies are affectionately called “E” galaxies. They can be extremely large and massive. This galaxy is 2 million light years across. The size of the Milky Way in comparison! ...
Galaxy Notes File
... the material comprising this dark matter is completely unknown at present, making this one of the greatest problems of ...
... the material comprising this dark matter is completely unknown at present, making this one of the greatest problems of ...
Lecture Notes
... cannot be independently calculated. (In this sense, it is a model, not a theory) 2. The model does not describe the gravitational interaction. 3. In its basic form it predicts neutrinos to have zero mass, which astronomical (and, much later, particle-physics) experiments have shown to be incorrect 4 ...
... cannot be independently calculated. (In this sense, it is a model, not a theory) 2. The model does not describe the gravitational interaction. 3. In its basic form it predicts neutrinos to have zero mass, which astronomical (and, much later, particle-physics) experiments have shown to be incorrect 4 ...
SUPERMASSIVE BLACK HOLES
... The rotating speed of supermassive black holes and the rotating speed of the AGN are the same. This leads to the mature formation of galactic centers in host galaxies to supermassive black holes. The presence of a supermassive black hole influences the galaxy to take on a spheroidal shape (elliptic ...
... The rotating speed of supermassive black holes and the rotating speed of the AGN are the same. This leads to the mature formation of galactic centers in host galaxies to supermassive black holes. The presence of a supermassive black hole influences the galaxy to take on a spheroidal shape (elliptic ...
The Deep Structure of Dark Matter
... Dynamic classifiers – Gravitational tidal tensor, Velocity shear tensor – are the most physical but have not been demonstrated on data yet. ...
... Dynamic classifiers – Gravitational tidal tensor, Velocity shear tensor – are the most physical but have not been demonstrated on data yet. ...
Correct answers shown in boldface. Be sure to write your name and
... d. when a second star that formed in orbit breaks up e. because once a star is on the main sequence, matter has to stop falling into it and ends up in a disk 17. As the solar nebula collapsed, it became a disk because a. the overall rotation of the nebula plus collisions between particles made the p ...
... d. when a second star that formed in orbit breaks up e. because once a star is on the main sequence, matter has to stop falling into it and ends up in a disk 17. As the solar nebula collapsed, it became a disk because a. the overall rotation of the nebula plus collisions between particles made the p ...
Milky Way Galaxy
... which Mkn 205 is 14 times farther away at a distance of 1 billion light year. The very distant quasar is nearly as bright as the much closer galaxy. The extraordinary brightness of quasars, which is a blending of the term quasi-stellar radio source, indicates that some incredibly powerful mechanism ...
... which Mkn 205 is 14 times farther away at a distance of 1 billion light year. The very distant quasar is nearly as bright as the much closer galaxy. The extraordinary brightness of quasars, which is a blending of the term quasi-stellar radio source, indicates that some incredibly powerful mechanism ...
Second and Third Black Hole Lecture
... however, only one of the stars can be seen (Cygnus X-1's visual companion), so in order to determine the mass of the unseen object, it is necessary to know, or to estimate, the mass of the companion star. In this case, m1and v1 refer to the companion star and m2 refers to Cygnus X-1, the unknown mas ...
... however, only one of the stars can be seen (Cygnus X-1's visual companion), so in order to determine the mass of the unseen object, it is necessary to know, or to estimate, the mass of the companion star. In this case, m1and v1 refer to the companion star and m2 refers to Cygnus X-1, the unknown mas ...
As far as - Sangeeta Malhotra
... contains only a third of the galaxies needed. Another team claims that, once we take into account faint galaxies that might have been missed, there are enough to do the job. Where these galaxies cluster together, they produce enough ultraviolet light to ionize the surrounding gas. So, in the end, fi ...
... contains only a third of the galaxies needed. Another team claims that, once we take into account faint galaxies that might have been missed, there are enough to do the job. Where these galaxies cluster together, they produce enough ultraviolet light to ionize the surrounding gas. So, in the end, fi ...
Chapter 15
... 1. They are usually moving toward us and are Doppler shifted to blue wavelengths. 2. The gas and dust in the arms filter out all but the blue light from stars in the arms 3. Stars are forming in the spiral arms so there are high mass, hot blue stars in the ...
... 1. They are usually moving toward us and are Doppler shifted to blue wavelengths. 2. The gas and dust in the arms filter out all but the blue light from stars in the arms 3. Stars are forming in the spiral arms so there are high mass, hot blue stars in the ...
Spectroscopic confirmation of a galaxy at redshift z=8.6
... Although we cannot derive the characteristics of the stellar population in UDFy-38135539, similarly selected galaxies at lower redshifts, z < 5–7, seem to be young (ages between 10 and 100 million years, Myr) and have both low metallicity and low extinction15–17. Plausible characteristics for the st ...
... Although we cannot derive the characteristics of the stellar population in UDFy-38135539, similarly selected galaxies at lower redshifts, z < 5–7, seem to be young (ages between 10 and 100 million years, Myr) and have both low metallicity and low extinction15–17. Plausible characteristics for the st ...
Lab 9
... How accurate were you? Is the criterion or criteria you used a good way to find galaxy distances? ...
... How accurate were you? Is the criterion or criteria you used a good way to find galaxy distances? ...
Ay 1 – Homework #6
... Collaboration policy: you can discuss it among yourselves in general terms, but everyone has to write or derive their own solutions. Multiple choice questions have only one correct answer, worth 1 point; circle only one. 1. True or False? In Hubble’s galaxy classification scheme (referred to as the ...
... Collaboration policy: you can discuss it among yourselves in general terms, but everyone has to write or derive their own solutions. Multiple choice questions have only one correct answer, worth 1 point; circle only one. 1. True or False? In Hubble’s galaxy classification scheme (referred to as the ...
Galaxies and the Universe bb
... Fate of the universe • Final fate depends on the average _______ of the universe • If the density is _____ than the critical density, then the universe would ________ • Current estimates point to _____ then the critical density and predict an _______________, or open, ...
... Fate of the universe • Final fate depends on the average _______ of the universe • If the density is _____ than the critical density, then the universe would ________ • Current estimates point to _____ then the critical density and predict an _______________, or open, ...
Black holes light up the universe
... known. The high-mass X-ray Cygnus X-1 in the Cygnus constellation has become the archetype of such binary systems, as it was the first to be discovered, in 1964. Gas from the black hole’s neighbour star spills across it, spins around and forms an accretion disk. The friction in the disc makes the ga ...
... known. The high-mass X-ray Cygnus X-1 in the Cygnus constellation has become the archetype of such binary systems, as it was the first to be discovered, in 1964. Gas from the black hole’s neighbour star spills across it, spins around and forms an accretion disk. The friction in the disc makes the ga ...
Lecture - Ann Arbor Earth Science
... from the Earth. Notice how the entire pattern of black lines has been shifted toward the red end of the spectrum. If the bottom band had been a star that is moving toward the Earth, then the pattern of black lines would have been shifted toward the blue end of the spectrum. A lack of shifting means ...
... from the Earth. Notice how the entire pattern of black lines has been shifted toward the red end of the spectrum. If the bottom band had been a star that is moving toward the Earth, then the pattern of black lines would have been shifted toward the blue end of the spectrum. A lack of shifting means ...
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.