Practical cosmology with the Local Volume galaxies
... Jerjen et al. (2000), Sharina et al. (2008) and others. About 150 LV members were resolved into stars in the first time. e) High angular resolution observations of the LV galaxies were performed abroad the Hubble Space Telescope, and accurate TRGB distances were measured for ~250 galaxies. The resul ...
... Jerjen et al. (2000), Sharina et al. (2008) and others. About 150 LV members were resolved into stars in the first time. e) High angular resolution observations of the LV galaxies were performed abroad the Hubble Space Telescope, and accurate TRGB distances were measured for ~250 galaxies. The resul ...
Hands-On Activities
... 4. After each group shares, give them time to continue making their own lists. Encourage them to use objects other groups mentioned if they didn’t have it. 5. After a couple more minutes (2-4), have the small groups come back together for the discussion of models. 6. Facilitate a group discussion of ...
... 4. After each group shares, give them time to continue making their own lists. Encourage them to use objects other groups mentioned if they didn’t have it. 5. After a couple more minutes (2-4), have the small groups come back together for the discussion of models. 6. Facilitate a group discussion of ...
The Animate and the Inanimate
... some property of the real universe that is irreversible. This irreversible property is found in what is called the second law of thermodynamics. This, taken in its most general aspect, amounts to this: that the energy of the universe is constantly running down to one common level. In other words, wh ...
... some property of the real universe that is irreversible. This irreversible property is found in what is called the second law of thermodynamics. This, taken in its most general aspect, amounts to this: that the energy of the universe is constantly running down to one common level. In other words, wh ...
book_text4
... operation in orbit. Seventeen years later when I received my first data, I was quite staggered by the quality of the images and also by the totally new science which they revealed about the ways in which relativistic jets can illuminate the environments of active galaxies. This is a repeated theme i ...
... operation in orbit. Seventeen years later when I received my first data, I was quite staggered by the quality of the images and also by the totally new science which they revealed about the ways in which relativistic jets can illuminate the environments of active galaxies. This is a repeated theme i ...
Inflation
... In the second line we used a ∝ tn with n < 1 as apropiate for normal matter such as matter and radiation. Particles separated by a distance dphys > RH never could have talked to each other. Particles separated by a distance dphys > H −1 can have no causal contact now, as they are flying away from e ...
... In the second line we used a ∝ tn with n < 1 as apropiate for normal matter such as matter and radiation. Particles separated by a distance dphys > RH never could have talked to each other. Particles separated by a distance dphys > H −1 can have no causal contact now, as they are flying away from e ...
25 Years of the Hubble Space Telescope - Speaker
... inhabitant is the star Eta Carinae, at far left. Eta Carinae is in the final stages of its brief and eruptive lifespan, as evidenced by two billowing lobes of gas and dust that presage its upcoming explosion as a titanic supernova. The outflow in the Carina region started three million years ago whe ...
... inhabitant is the star Eta Carinae, at far left. Eta Carinae is in the final stages of its brief and eruptive lifespan, as evidenced by two billowing lobes of gas and dust that presage its upcoming explosion as a titanic supernova. The outflow in the Carina region started three million years ago whe ...
Exploring the Most Bizarre Ideas in Cosmology Astronomers
... somewhat broader view insofar as recent discoveries about other planets have uncovered many features and phenomena which may certainly be regarded as "weird" or anomalous in comparison with anything experienced on Earth. The present volume continues this approach. Strange observations are certainly ...
... somewhat broader view insofar as recent discoveries about other planets have uncovered many features and phenomena which may certainly be regarded as "weird" or anomalous in comparison with anything experienced on Earth. The present volume continues this approach. Strange observations are certainly ...
The redshift of extragalactic nebulae
... famous Einstein effect. It appeared, however, that it was not possible in this way to uncover rational relationships. E. HUBBLE then tried to correlate the redshift with the distance of different nebulae. This experiment has, as is well known, since then been crowned by great success. The nebulae wh ...
... famous Einstein effect. It appeared, however, that it was not possible in this way to uncover rational relationships. E. HUBBLE then tried to correlate the redshift with the distance of different nebulae. This experiment has, as is well known, since then been crowned by great success. The nebulae wh ...
A 6% measurement of the Hubble parameter at ζ ∼ 0.45: direct
... Previous works [11, 30, 31, 32] have also demonstrated that it is possible to obtain reliable and accurate cosmic chronometers using passively evolving selected galaxies. Recently, the independent analysis of SDSS-DR8 luminous red galaxies by ref. [33] has confirmed that massive and quiescent galaxi ...
... Previous works [11, 30, 31, 32] have also demonstrated that it is possible to obtain reliable and accurate cosmic chronometers using passively evolving selected galaxies. Recently, the independent analysis of SDSS-DR8 luminous red galaxies by ref. [33] has confirmed that massive and quiescent galaxi ...
Document
... far larger than previously thought. Galaxies are the fundamental units of the Universe, just as stars are the basic units of galaxies. Like stars, many galaxies are found in clusters, and there are also superclusters separated by enormous voids. By looking back in time at very distant ...
... far larger than previously thought. Galaxies are the fundamental units of the Universe, just as stars are the basic units of galaxies. Like stars, many galaxies are found in clusters, and there are also superclusters separated by enormous voids. By looking back in time at very distant ...
A Brief History of Time - Stephen Hawking
... at that, because ellipses were clearly less perfect than circles. Having discovered almost by accident that elliptical orbits fit the observations well, he could not reconcile them with his idea that the planets were made to orbit the sun by magnetic forces. An explanation was provided only much lat ...
... at that, because ellipses were clearly less perfect than circles. Having discovered almost by accident that elliptical orbits fit the observations well, he could not reconcile them with his idea that the planets were made to orbit the sun by magnetic forces. An explanation was provided only much lat ...
Slide 1
... • One of our favorite reasons is to look at the atomic hydrogen clouds in the Milky Way. • The clouds lay very far out from the galactic center (further out than our sun) and are rotating faster than they should be if they were just feeling the gravity of the mass we can “see” Big Bang, Black Early ...
... • One of our favorite reasons is to look at the atomic hydrogen clouds in the Milky Way. • The clouds lay very far out from the galactic center (further out than our sun) and are rotating faster than they should be if they were just feeling the gravity of the mass we can “see” Big Bang, Black Early ...
astro-ph/0210527 PDF
... which were dynamically nearby to that state to be in the same coarse grained “bin”, and, and by similarly making other coarse grained bins from other more dynamically distant states. From that particular coarse-graining, the box of gas illustrated in Figure 1 would not exhibit an arrow of time. The ...
... which were dynamically nearby to that state to be in the same coarse grained “bin”, and, and by similarly making other coarse grained bins from other more dynamically distant states. From that particular coarse-graining, the box of gas illustrated in Figure 1 would not exhibit an arrow of time. The ...
Teaching Tips Table of Contents - Hubble Deep Field
... The graphic display of numbers may help to show patterns such as trends, varying rates of change, gaps, or clusters that are useful when making predictions about the phenomena being graphed. 9C/M4 ...
... The graphic display of numbers may help to show patterns such as trends, varying rates of change, gaps, or clusters that are useful when making predictions about the phenomena being graphed. 9C/M4 ...
Chapter 17 - Astronomy
... 11. Dark matter is distributed in galaxies and clusters of galaxies in a way similar to visible matter, as shown by the rotation curves of galaxies. 12. Galactic halos may contain much of the missing matter. 17-4 The Origin of Galactic Types 1. Two modern theories—the cloud density theory and the me ...
... 11. Dark matter is distributed in galaxies and clusters of galaxies in a way similar to visible matter, as shown by the rotation curves of galaxies. 12. Galactic halos may contain much of the missing matter. 17-4 The Origin of Galactic Types 1. Two modern theories—the cloud density theory and the me ...
8) consequence of the new theory about the
... based on movements of planets within our solar system. When G had been measured, the mass of the Earth and the graviatational acceleration could be calculated. With this Newton could nicely explain the tidal changes. In the meantime, the gravitation constant G has been determined in many different w ...
... based on movements of planets within our solar system. When G had been measured, the mass of the Earth and the graviatational acceleration could be calculated. With this Newton could nicely explain the tidal changes. In the meantime, the gravitation constant G has been determined in many different w ...
Dark Matter, Dark Energy, and the Fate of the Universe
... universe was born about 14 billion years ago in the Big Bang and ...
... universe was born about 14 billion years ago in the Big Bang and ...
early universe was highly frozen?!
... are identified as perfect vacuum region, partial vacuum region, ultra high vacuum region etc. Scientist Einstein focused the region as vacuum where the Electromagnetic wave travels at the speed of Light (3x108 meter/second) and the permittivity of electric charge, permeability of magnetic flux are a ...
... are identified as perfect vacuum region, partial vacuum region, ultra high vacuum region etc. Scientist Einstein focused the region as vacuum where the Electromagnetic wave travels at the speed of Light (3x108 meter/second) and the permittivity of electric charge, permeability of magnetic flux are a ...
The paper on the Hubble constant published in 2010
... Abstract: It is shown that the Hubble constant can be derived from the standard luminosity function of galaxies as well as from a new luminosity function as deduced from the mass-luminosity relationship for galaxies. An analytical expression for the Hubble constant can be found from the maximum numb ...
... Abstract: It is shown that the Hubble constant can be derived from the standard luminosity function of galaxies as well as from a new luminosity function as deduced from the mass-luminosity relationship for galaxies. An analytical expression for the Hubble constant can be found from the maximum numb ...
Chapter 17
... 1. In 1912, Slipher found that spiral nebulae had redshifted spectra indicating that they were moving away from us at tremendous velocity. 2. In 1920s, Hubble and Humason showed that there is a relationship between the recessional velocities of galaxies and their distances. 3. Hubble showed that the ...
... 1. In 1912, Slipher found that spiral nebulae had redshifted spectra indicating that they were moving away from us at tremendous velocity. 2. In 1920s, Hubble and Humason showed that there is a relationship between the recessional velocities of galaxies and their distances. 3. Hubble showed that the ...
Presentation on the universe
... 5 Which best describes the Big Bang Theory? A The universe has always been the way it is today. B The universe began from a dying star C The universe was created by a singleexplosion The universe is full of explosions, or "big bangs," D that are making it expand ...
... 5 Which best describes the Big Bang Theory? A The universe has always been the way it is today. B The universe began from a dying star C The universe was created by a singleexplosion The universe is full of explosions, or "big bangs," D that are making it expand ...
6th Grade The Theoretical Beginning of the Universe / Big Bang
... The universe is full of explosions, or "big bangs," D that are making it expand ...
... The universe is full of explosions, or "big bangs," D that are making it expand ...
A Brief History of Time
... have been mentioned, however, because it led to a great increase in applications. I don’t think anyone, my publishers, my agent, or myself, expected the book to do anything like as well as it did. It was in the London Sunday Times best-seller list for 237 weeks, longer than any other book (apparentl ...
... have been mentioned, however, because it led to a great increase in applications. I don’t think anyone, my publishers, my agent, or myself, expected the book to do anything like as well as it did. It was in the London Sunday Times best-seller list for 237 weeks, longer than any other book (apparentl ...
A Map of the Universe
... picture, at a scale of 1/108 , shows the entire Earth. The 14th picture, at a scale of 1/1014 , shows the entire Solar system. The 18th picture, at a scale of 1/1018 , includes α Centauri, The 22nd picture, at a scale of 1/1022 shows all of the Milky Way Galaxy. The 26th and last picture in the sequ ...
... picture, at a scale of 1/108 , shows the entire Earth. The 14th picture, at a scale of 1/1014 , shows the entire Solar system. The 18th picture, at a scale of 1/1018 , includes α Centauri, The 22nd picture, at a scale of 1/1022 shows all of the Milky Way Galaxy. The 26th and last picture in the sequ ...
Cold galaxies at low and high z
... Over 100 Type Ia supernova have been found at redshifts 0.5-1.5 Comparing these to nearby supernova, we find that in cosmological models with matter only, the distant supernovae are fainter than expected for their redshift (Perlmutter 2002). ‘Dark energy’ is pushing the galaxies apart. Sept 27th 200 ...
... Over 100 Type Ia supernova have been found at redshifts 0.5-1.5 Comparing these to nearby supernova, we find that in cosmological models with matter only, the distant supernovae are fainter than expected for their redshift (Perlmutter 2002). ‘Dark energy’ is pushing the galaxies apart. Sept 27th 200 ...