A new view of galaxy evolution
... a filter just a bit bluer. This is the These galaxies are very bright and thus traditional way to find distant galaxies easy to see because they are undergoing intense and is being used today to find the most distant star formation, a common process in the early galaxies in the universe. universe. H ...
... a filter just a bit bluer. This is the These galaxies are very bright and thus traditional way to find distant galaxies easy to see because they are undergoing intense and is being used today to find the most distant star formation, a common process in the early galaxies in the universe. universe. H ...
Chapter 10 Formation and evolution of the Local Group
... Summary: The Local Group (LG) is the group of galaxies gravitationally associated with the Galaxy and M 31. Galaxies within the LG have overcome the general expansion of the universe. There are approximately 75 galaxies in the LG within a diameter of ∼3 Mpc having a total mass of 2-5 × 1012 M⊙ . A s ...
... Summary: The Local Group (LG) is the group of galaxies gravitationally associated with the Galaxy and M 31. Galaxies within the LG have overcome the general expansion of the universe. There are approximately 75 galaxies in the LG within a diameter of ∼3 Mpc having a total mass of 2-5 × 1012 M⊙ . A s ...
book_text4
... The Hubble Space Telescope has undoubtedly had a greater public impact than any other space astronomy mission ever. The images included in this beautiful volume are quite staggering in what they reveal about the Universe we live in and have already become part of our common scientific and cultural h ...
... The Hubble Space Telescope has undoubtedly had a greater public impact than any other space astronomy mission ever. The images included in this beautiful volume are quite staggering in what they reveal about the Universe we live in and have already become part of our common scientific and cultural h ...
Stars, Galaxies, Superuniverses and the Urantia Book, by Frederick
... www.usgs.gov/edu/waterdistribution.html, as 317 million cubic miles. Knowing this, and that one cubic mile is equivalent to 4.167 x 109 cubic meters, one finds that the volume of water on Urantia is 1.321 x 1018 m3 or 1.321 x 1024 cm3. Another source states that the oceans cover 70 percent of the ea ...
... www.usgs.gov/edu/waterdistribution.html, as 317 million cubic miles. Knowing this, and that one cubic mile is equivalent to 4.167 x 109 cubic meters, one finds that the volume of water on Urantia is 1.321 x 1018 m3 or 1.321 x 1024 cm3. Another source states that the oceans cover 70 percent of the ea ...
sections 23-25 powerpoint
... Elliptical galaxy (E). A spheroidal galaxy containing millions to billions of old low-mass stars and no gas or dust. Spiral Galaxy (S). A galaxy with a spheroidal bulge of several million old low-mass stars and a flattened pancake-like disk of billions of old low-mass and young high-mass stars, alon ...
... Elliptical galaxy (E). A spheroidal galaxy containing millions to billions of old low-mass stars and no gas or dust. Spiral Galaxy (S). A galaxy with a spheroidal bulge of several million old low-mass stars and a flattened pancake-like disk of billions of old low-mass and young high-mass stars, alon ...
the Local Group - Simon P Driver
... • about half of known galaxies are in groups and clusters – these are dense enough to halt cosmological expansion locally, and so the galaxies remain bound to each other • the other half of galaxies are loosely spread out in large filaments and ‘walls’ – part of the large-scale structure of the ...
... • about half of known galaxies are in groups and clusters – these are dense enough to halt cosmological expansion locally, and so the galaxies remain bound to each other • the other half of galaxies are loosely spread out in large filaments and ‘walls’ – part of the large-scale structure of the ...
instructor notes: weeks 9/10
... tied to overall dimensions: cD galaxies. Huge elliptical galaxies dominating some clusters of galaxies. “cD” stands for “cluster dominating” galaxy. Some are incredibly large, massive, and luminous. Normal ellipticals. Standard E galaxies comparable in luminosity to supergiant spiral galaxies. Dwarf ...
... tied to overall dimensions: cD galaxies. Huge elliptical galaxies dominating some clusters of galaxies. “cD” stands for “cluster dominating” galaxy. Some are incredibly large, massive, and luminous. Normal ellipticals. Standard E galaxies comparable in luminosity to supergiant spiral galaxies. Dwarf ...
An Expanded View of the Universe
... Black holes: what was their role in shaping the Universe? Black holes have puzzled physicists and astronomers since they were first postulated in relativistic form a century ago by Karl Schwarzschild. Observations have demonstrated that these bizarre objects really exist. And on a grand scale, too: ...
... Black holes: what was their role in shaping the Universe? Black holes have puzzled physicists and astronomers since they were first postulated in relativistic form a century ago by Karl Schwarzschild. Observations have demonstrated that these bizarre objects really exist. And on a grand scale, too: ...
Galaxy Sorting
... galaxies, called dwarf galaxies, may be the most plentiful galaxies in the universe. Indeed, there are probably so many dwarf galaxies that their combined mass probably exceeds that of all the larger galaxies taken together. But their small size and dimness make them hard to detect and we have o ...
... galaxies, called dwarf galaxies, may be the most plentiful galaxies in the universe. Indeed, there are probably so many dwarf galaxies that their combined mass probably exceeds that of all the larger galaxies taken together. But their small size and dimness make them hard to detect and we have o ...
Galaxies - WordPress.com
... B cannot be estimated with precision, since we cannot be sure how many galaxies the cluster ...
... B cannot be estimated with precision, since we cannot be sure how many galaxies the cluster ...
Document
... Superclusters tend to form a network of bubbles, like the suds in a kitchen sink (see figures). Large concentrations of galaxies (that is, several adjacent superclusters) surround relatively empty regions of the Universe, called voids, that have typical diameters of about 100 million light-years (bu ...
... Superclusters tend to form a network of bubbles, like the suds in a kitchen sink (see figures). Large concentrations of galaxies (that is, several adjacent superclusters) surround relatively empty regions of the Universe, called voids, that have typical diameters of about 100 million light-years (bu ...
3. Cosmology and the Origin and Evolution of Galaxies
... ing whether broad continuum features in the spectral energy distributions (SEDs) of mm galaxies at rest-frame mid-IR to radio wavelengths can provide photometric-redshifts with sufficient accuracy7. There has also been some success in the measurement of optical and IR spectroscopic redshifts for a fr ...
... ing whether broad continuum features in the spectral energy distributions (SEDs) of mm galaxies at rest-frame mid-IR to radio wavelengths can provide photometric-redshifts with sufficient accuracy7. There has also been some success in the measurement of optical and IR spectroscopic redshifts for a fr ...
A Zoo of Galaxies - Cambridge University Press
... The variety of different galaxies observed in the sky naturally caused people to wonder what they were. The scientific arguments surrounding this question at the start of the 20th century, are best represented perhaps, by the public debate held in 1920 between Heber Curtis and Harlow Shapley. Many oth ...
... The variety of different galaxies observed in the sky naturally caused people to wonder what they were. The scientific arguments surrounding this question at the start of the 20th century, are best represented perhaps, by the public debate held in 1920 between Heber Curtis and Harlow Shapley. Many oth ...
PDF
... also introduced the enigmatic lenticular or S0 class. These share the disk-like structure of spirals with an inner nuclear bulge, but are devoid of spiral arms and share the smoothness and colours of the elliptical population. Over 90% of nearby luminous galaxies can be categorized within Hubble’s s ...
... also introduced the enigmatic lenticular or S0 class. These share the disk-like structure of spirals with an inner nuclear bulge, but are devoid of spiral arms and share the smoothness and colours of the elliptical population. Over 90% of nearby luminous galaxies can be categorized within Hubble’s s ...
A Zoo of Galaxies
... The variety of different galaxies observed in the sky naturally caused people to wonder what they were. The scientific arguments surrounding this question at the start of the 20th century, are best represented perhaps, by the public debate held in 1920 between Heber Curtis and Harlow Shapley. Many o ...
... The variety of different galaxies observed in the sky naturally caused people to wonder what they were. The scientific arguments surrounding this question at the start of the 20th century, are best represented perhaps, by the public debate held in 1920 between Heber Curtis and Harlow Shapley. Many o ...
A Zoo of Galaxies - Portsmouth Research Portal
... The variety of different galaxies observed in the sky naturally caused people to wonder what they were. The scientific arguments surrounding this question at the start of the 20th century, are best represented perhaps, by the public debate held in 1920 between Heber Curtis and Harlow Shapley. Many o ...
... The variety of different galaxies observed in the sky naturally caused people to wonder what they were. The scientific arguments surrounding this question at the start of the 20th century, are best represented perhaps, by the public debate held in 1920 between Heber Curtis and Harlow Shapley. Many o ...
21_Testbank
... 28) Where are the X rays produced that are emitted by quasars and other active galactic nuclei? A) in hot gas in an accretion disk around a central black hole B) in ionization nebulae of interstellar gas that surround the accretion disk C) in dust grains in molecular clouds that encircle the active ...
... 28) Where are the X rays produced that are emitted by quasars and other active galactic nuclei? A) in hot gas in an accretion disk around a central black hole B) in ionization nebulae of interstellar gas that surround the accretion disk C) in dust grains in molecular clouds that encircle the active ...
The Cosmos & the Bible
... The Solution to Olbers' Paradox • Analogous to question of how deep one must go into woods to see only tree trunks all around. • To have a dark sky, universe must not be deep enough to see only star surfaces in all directions. • Thus the universe is of finite age, or finite size, or average star den ...
... The Solution to Olbers' Paradox • Analogous to question of how deep one must go into woods to see only tree trunks all around. • To have a dark sky, universe must not be deep enough to see only star surfaces in all directions. • Thus the universe is of finite age, or finite size, or average star den ...
Galaxies
... arms are wound, with “a” being most tightly wound. The Andromeda Galaxy is an Sb. • Elliptical galaxies are denoted by “E”, with a number from 0-7 indicating how circular it appears. An example of this would be M87, which is an E0 galaxy. • Irregulars, such as the Small Magellanic Cloud, are denoted ...
... arms are wound, with “a” being most tightly wound. The Andromeda Galaxy is an Sb. • Elliptical galaxies are denoted by “E”, with a number from 0-7 indicating how circular it appears. An example of this would be M87, which is an E0 galaxy. • Irregulars, such as the Small Magellanic Cloud, are denoted ...
here - Ira-Inaf
... et al. (1983) proposed that photochemical oxidation of CH4 and subsequent precipitation into oceans could have provided a carbon source for biomolecular reactions that led to the formation of H2CO, and Kasting (1993) developed atmospheric models of early Earth in an effort to address the conditions ...
... et al. (1983) proposed that photochemical oxidation of CH4 and subsequent precipitation into oceans could have provided a carbon source for biomolecular reactions that led to the formation of H2CO, and Kasting (1993) developed atmospheric models of early Earth in an effort to address the conditions ...
20_Testbank
... the Milky Way. Therefore, they serve as a bridge between us and standard candles in other galaxies. Once we determine the distance to another galaxy for which we have observed a whitedwarf supernova, we then can calibrate the average luminosity of white-dwarf supernovae. White-dwarf supernovae and C ...
... the Milky Way. Therefore, they serve as a bridge between us and standard candles in other galaxies. Once we determine the distance to another galaxy for which we have observed a whitedwarf supernova, we then can calibrate the average luminosity of white-dwarf supernovae. White-dwarf supernovae and C ...
Pale Blue Dot
... In the last few decades, the United States and the former Soviet Union have accomplished something stunning and historic—the close-up examination of all those points of light, from Mercury to Saturn, that moved our ancestors to wonder and to science. Since the advent of successful interplanetary igh ...
... In the last few decades, the United States and the former Soviet Union have accomplished something stunning and historic—the close-up examination of all those points of light, from Mercury to Saturn, that moved our ancestors to wonder and to science. Since the advent of successful interplanetary igh ...
Chapter 15 THE MILKY WAY IN RELATION TO OTHER GALAXIES
... Kent (1987b) observed among others in such a way the elliptical companions of the Andromeda galaxy. There is a large variety of luminosity profiles. M32 can be represented with an R1/4 -law out to 0.34 kpc with an effective radius of 0.11 kpc. The total extent observed (out to 1.0 kpc) shows a more ...
... Kent (1987b) observed among others in such a way the elliptical companions of the Andromeda galaxy. There is a large variety of luminosity profiles. M32 can be represented with an R1/4 -law out to 0.34 kpc with an effective radius of 0.11 kpc. The total extent observed (out to 1.0 kpc) shows a more ...
Galaxies
... mutual gravity cannot hold them together is called a. a globular cluster. b. an open cluster. c. an association. d. a spherical component e. an accretion disk. 4. Our galaxy is suspected to be surrounded by a galactic corona because the disk of the galaxy a. rotates faster than expected in its outer ...
... mutual gravity cannot hold them together is called a. a globular cluster. b. an open cluster. c. an association. d. a spherical component e. an accretion disk. 4. Our galaxy is suspected to be surrounded by a galactic corona because the disk of the galaxy a. rotates faster than expected in its outer ...
Fermi paradox
The Fermi paradox (or Fermi's paradox) is the apparent contradiction between high estimates of the probability of the existence of extraterrestrial civilizations, such as in the Drake equation, and the lack of evidence for such civilizations. The basic points of the argument, made by physicists Enrico Fermi and Michael H. Hart, are: The Sun is a typical star, and there are billions of stars in the galaxy that are billions of years older. With high probability, some of these stars will have Earth-like planets, and if the earth is typical, some might develop intelligent life. Some of these civilizations might develop interstellar travel, a step the Earth is investigating now. Even at the slow pace of currently envisioned interstellar travel, the Milky Way galaxy could be completely traversed in about a million years.According to this line of thinking, the Earth should already have been visited by extraterrestrial aliens though Fermi saw no convincing evidence of this, nor any signs of alien intelligence anywhere in the observable universe, leading him to ask, ""Where is everybody?""