Astronomy and Astrophysics (ASTRO) Iowa State University – 2013-2014 1
... combines material on common naked-eye phenomena, such as daily and seasonal variations in the sky, with information on how these helped navigators determine where they are on Earth. The course "lectures" are on-line, interactive units with build in exercises, hands-on (offline) activities and layers ...
... combines material on common naked-eye phenomena, such as daily and seasonal variations in the sky, with information on how these helped navigators determine where they are on Earth. The course "lectures" are on-line, interactive units with build in exercises, hands-on (offline) activities and layers ...
Explosive sources of the highest energy radiation
... much more powerful flare, peaking at ~10 times energetic particles into the nebula. The Crab higher than the integrated average flux observed Nebula can be detected at wavelengths from during the first disc passage. This flare contin- radio all they way up to TeV energies; below ued for seven weeks, ...
... much more powerful flare, peaking at ~10 times energetic particles into the nebula. The Crab higher than the integrated average flux observed Nebula can be detected at wavelengths from during the first disc passage. This flare contin- radio all they way up to TeV energies; below ued for seven weeks, ...
Module 11.1.1: Galaxies: Morphology and the Hubble Sequence
... positions, magnitudes, maybe diameters, but everything that was known about Bright Galaxies at the time, and those were called Reference Catalogs, ending up with the third one of those. And those ...
... positions, magnitudes, maybe diameters, but everything that was known about Bright Galaxies at the time, and those were called Reference Catalogs, ending up with the third one of those. And those ...
Far-ultraviolet and far-infrared bivariate luminosity function of galaxies:
... Far-ultraviolet (FUV) and far-infrared (FIR) luminosity functions (LFs) of galaxies show a strong evolution from z = 0 to z = 1, but the FIR LF evolves much stronger than the FUV one. The FUV is dominantly radiated from newly-formed short-lived OB stars, while the FIR is emitted by dust grains heate ...
... Far-ultraviolet (FUV) and far-infrared (FIR) luminosity functions (LFs) of galaxies show a strong evolution from z = 0 to z = 1, but the FIR LF evolves much stronger than the FUV one. The FUV is dominantly radiated from newly-formed short-lived OB stars, while the FIR is emitted by dust grains heate ...
mg_colloq - University of Massachusetts Amherst
... • Include the oldest, most massive galaxies • Formed the bulk of their stellar mass at high redshift, on short time scale: ≈90% at z>2 (Renzini 2006) • Probes of the physics of early star formation • Evolved passively since ...
... • Include the oldest, most massive galaxies • Formed the bulk of their stellar mass at high redshift, on short time scale: ≈90% at z>2 (Renzini 2006) • Probes of the physics of early star formation • Evolved passively since ...
Local Group Encyclopedia of Astronomy & Astrophysics eaa.iop.org Mario L Mateo
... concentration of stars and GLOBULAR CLUSTERS towards the constellation Sagittarius all confirm this classification—the specific spiral subtype is extremely difficult to determine reliably from our unfavorable vantage point inside the Galaxy. Various indirect indicators suggest that our Galaxy can be ...
... concentration of stars and GLOBULAR CLUSTERS towards the constellation Sagittarius all confirm this classification—the specific spiral subtype is extremely difficult to determine reliably from our unfavorable vantage point inside the Galaxy. Various indirect indicators suggest that our Galaxy can be ...
A Zoo of Galaxies - Portsmouth Research Portal
... galaxy. The map made by Cornelius Easton in 1900 (Fig 3) was the first to show our galaxy as having spiral structures (Trimble 1995). Easton used pictures of other spiral galaxies he saw in the sky to suggest the Milky Way might have this structure, although he still incorrectly placed the Sun in th ...
... galaxy. The map made by Cornelius Easton in 1900 (Fig 3) was the first to show our galaxy as having spiral structures (Trimble 1995). Easton used pictures of other spiral galaxies he saw in the sky to suggest the Milky Way might have this structure, although he still incorrectly placed the Sun in th ...
A Zoo of Galaxies
... galaxy. The map made by Cornelius Easton in 1900 (Fig 3) was the first to show our galaxy as having spiral structures (Trimble 1995). Easton used pictures of other spiral galaxies he saw in the sky to suggest the Milky Way might have this structure, although he still incorrectly placed the Sun in th ...
... galaxy. The map made by Cornelius Easton in 1900 (Fig 3) was the first to show our galaxy as having spiral structures (Trimble 1995). Easton used pictures of other spiral galaxies he saw in the sky to suggest the Milky Way might have this structure, although he still incorrectly placed the Sun in th ...
higher dimensional defects in cosmology tufts university
... gravity with quantum field theory. Our best candidate of quantum gravity, superstring theory, requires ten-dimensional space-time for mathematical consistency. However, since our world appears four-dimensional there must be a mechanism that “hides” extra dimensions so that we do not experience them ...
... gravity with quantum field theory. Our best candidate of quantum gravity, superstring theory, requires ten-dimensional space-time for mathematical consistency. However, since our world appears four-dimensional there must be a mechanism that “hides” extra dimensions so that we do not experience them ...
The environment of high-redshift AGN OLIMPIA JUDIT FOGASY
... One of the greatest and most important discoveries in the field of astronomy was the realization, that the Milky Way is just one of billions of galaxies in the Universe. Since then, millions of galaxies have been observed, studied and categorized, which revealed that galaxies come in many different ...
... One of the greatest and most important discoveries in the field of astronomy was the realization, that the Milky Way is just one of billions of galaxies in the Universe. Since then, millions of galaxies have been observed, studied and categorized, which revealed that galaxies come in many different ...
Spring 2015 Mercury - Astronomical Society of the Pacific
... A quarter-century and five servicing missions later, Hubble is performing better than ever. But perhaps the most fascinating aspect of Hubble’s history is that it’s making observations that were never envisioned when it was being designed and built. Here’s one example. In the July 1982 Scientific Am ...
... A quarter-century and five servicing missions later, Hubble is performing better than ever. But perhaps the most fascinating aspect of Hubble’s history is that it’s making observations that were never envisioned when it was being designed and built. Here’s one example. In the July 1982 Scientific Am ...
Project Description - SDSS-III
... 160,000 distant QSOs. The galaxy clustering measurements will determine the absolute distance scale with a precision of 1.0% at z = 0.35 and 1.1% at z = 0.6, extending the lever arm of the existing SDSS measurements by a factor of two and improving the measurement precision by a factor of four. BOSS ...
... 160,000 distant QSOs. The galaxy clustering measurements will determine the absolute distance scale with a precision of 1.0% at z = 0.35 and 1.1% at z = 0.6, extending the lever arm of the existing SDSS measurements by a factor of two and improving the measurement precision by a factor of four. BOSS ...
Satellite galaxies in hydrodynamical simulations of Milky Way sized
... Despite all of this progress, it is evident that there remain many open questions concerning the population of faint and ultra-faint satellite galaxies orbiting around Milky Way like galaxies. Especially the influence of different baryonic feedback processes on the luminosity function of the simulated ...
... Despite all of this progress, it is evident that there remain many open questions concerning the population of faint and ultra-faint satellite galaxies orbiting around Milky Way like galaxies. Especially the influence of different baryonic feedback processes on the luminosity function of the simulated ...
Lecture Outline and Specific Objectives
... this chapter you should be able to: • outline the formation of the gas giants, and contrast this with the formation of the terrestrial planets • compare the sizes, masses and compositions of the giant planets • identify the cloud layers in the giant planets’ atmospheres • describe the belt and zone ...
... this chapter you should be able to: • outline the formation of the gas giants, and contrast this with the formation of the terrestrial planets • compare the sizes, masses and compositions of the giant planets • identify the cloud layers in the giant planets’ atmospheres • describe the belt and zone ...
The formation of disc galaxies in high-resolution moving
... 2013). This often reflects a fuzzy notion of how ‘subgrid’ physics (which invariably plays an important role in this problem) should be treated, or sometimes an ignorance of this unavoidable limitation altogether. We argue in this paper that resolution-dependent feedback implementations make it hard ...
... 2013). This often reflects a fuzzy notion of how ‘subgrid’ physics (which invariably plays an important role in this problem) should be treated, or sometimes an ignorance of this unavoidable limitation altogether. We argue in this paper that resolution-dependent feedback implementations make it hard ...
Plotting the Rotation Curve of M31
... then measure the wavelengths of hydrogen emission spectra taken at a range of radii. The Doppler equation will be used to determine whether these spectra come from the approaching or receding limb of the galaxy and the velocity of rotation at that point. A velocity vs radius graph is plotted and com ...
... then measure the wavelengths of hydrogen emission spectra taken at a range of radii. The Doppler equation will be used to determine whether these spectra come from the approaching or receding limb of the galaxy and the velocity of rotation at that point. A velocity vs radius graph is plotted and com ...
THE MORPHOLOGICAL DEMOGRAPHICS OF GALAXIES IN THE
... were f (R) = 2π 0R I(r)dr is the integrated flux within the radius R. The determination of the radius R up to where to integrate the light is of importance particularly for the asymmetry values. As we sample galaxies over ever larger cosmic ages, the surface brightness of galaxies at higher redshift ...
... were f (R) = 2π 0R I(r)dr is the integrated flux within the radius R. The determination of the radius R up to where to integrate the light is of importance particularly for the asymmetry values. As we sample galaxies over ever larger cosmic ages, the surface brightness of galaxies at higher redshift ...
MPA Anniversary Brochure - Max Planck Institute for Astrophysics
... Studies of sunspots had also contributed a lot to the better understanding of cosmic magnetic fields. A separate development also led to the foundation of another new institute. As early as 1950, Ludwig Biermann had suggested that the bending of the plasma tails of comets is caused by a particle flo ...
... Studies of sunspots had also contributed a lot to the better understanding of cosmic magnetic fields. A separate development also led to the foundation of another new institute. As early as 1950, Ludwig Biermann had suggested that the bending of the plasma tails of comets is caused by a particle flo ...
nainan k. varghese
... for a free body to orbit around another. However, they may orbit about each other and follow a common median path in space. Mechanism of orbit-formation and the limitations of orbiting bodies, described in this article, are based on a radically different dynamics from an alternative concept put forw ...
... for a free body to orbit around another. However, they may orbit about each other and follow a common median path in space. Mechanism of orbit-formation and the limitations of orbiting bodies, described in this article, are based on a radically different dynamics from an alternative concept put forw ...
Here - 21st International Conference on General Relativity and
... Stellar objects in the quadratic regime (Pedro Mafa Takisa) . . . . . . . . On the conditions for the formation of exotic compact objects from gravitational collapse (Daniele Malafarina) . . . . . . . . . . . . . . . . . Universal Walker metrics (Tomas Malek ) . . . . . . . . . . . . . . . . . . . T ...
... Stellar objects in the quadratic regime (Pedro Mafa Takisa) . . . . . . . . On the conditions for the formation of exotic compact objects from gravitational collapse (Daniele Malafarina) . . . . . . . . . . . . . . . . . Universal Walker metrics (Tomas Malek ) . . . . . . . . . . . . . . . . . . . T ...
book_text4
... Hubble vs. Adaptive Optics The technique of Adaptive Optics can sharpen images from large ground-based telescopes to attain a higher resolution and is being vigorously developed by astronomers around the World. Such observations are highly complementary to those made by Hubble since they can exploi ...
... Hubble vs. Adaptive Optics The technique of Adaptive Optics can sharpen images from large ground-based telescopes to attain a higher resolution and is being vigorously developed by astronomers around the World. Such observations are highly complementary to those made by Hubble since they can exploi ...
Stars, Galaxies, Superuniverses and the Urantia Book, by Frederick
... the universe itself. Figure 1 shows a portion of the Deep Field South image showing galaxies at distances out to 12 billion light years. The Urantia Book contains a description of the universe which one might describe as "Urantian cosmology." This cosmological information, written prior to 1941 by c ...
... the universe itself. Figure 1 shows a portion of the Deep Field South image showing galaxies at distances out to 12 billion light years. The Urantia Book contains a description of the universe which one might describe as "Urantian cosmology." This cosmological information, written prior to 1941 by c ...
Building galaxies Hunt, Leslie Kipp
... “S0’s”, a class of galaxies roughly intermediate between ellipticals and early-type Sa spirals, but with a variety of appearances because of the presence or absence of dust lanes (Sandage 1961). They lack spiral arms but, unlike ellipticals, contain a low-surface brightness envelope surrounding the ...
... “S0’s”, a class of galaxies roughly intermediate between ellipticals and early-type Sa spirals, but with a variety of appearances because of the presence or absence of dust lanes (Sandage 1961). They lack spiral arms but, unlike ellipticals, contain a low-surface brightness envelope surrounding the ...
Wandering in the Redshift Desert
... helps to go into the near-infrared. Figures 8 and 9 are analogous to the previNTR SVN jFTQDR ATS 2%1 @MC M* are now plotted v. the J-band magnitude instead of the B-band. Clearly, whereas a B < 25 mag selection misses most of the SFR and most of the stellar mass at zp] @ J < 24 mag selection would p ...
... helps to go into the near-infrared. Figures 8 and 9 are analogous to the previNTR SVN jFTQDR ATS 2%1 @MC M* are now plotted v. the J-band magnitude instead of the B-band. Clearly, whereas a B < 25 mag selection misses most of the SFR and most of the stellar mass at zp] @ J < 24 mag selection would p ...
Sample syllabus 2 - Johns Hopkins Center for Talented Youth
... Course Description: When the sun runs out of fuel, will it explode in a giant supernova or fade out into a white dwarf? Does every galaxy revolve around a super-massive black hole? Will the universe continue to expand, or will it eventually collapse back upon itself in a reversal of the Big Bang? As ...
... Course Description: When the sun runs out of fuel, will it explode in a giant supernova or fade out into a white dwarf? Does every galaxy revolve around a super-massive black hole? Will the universe continue to expand, or will it eventually collapse back upon itself in a reversal of the Big Bang? As ...
Physical cosmology
Physical cosmology is the study of the largest-scale structures and dynamics of the Universe and is concerned with fundamental questions about its origin, structure, evolution, and ultimate fate. For most of human history, it was a branch of metaphysics and religion. Cosmology as a science originated with the Copernican principle, which implies that celestial bodies obey identical physical laws to those on Earth, and Newtonian mechanics, which first allowed us to understand those physical laws.Physical cosmology, as it is now understood, began with the development in 1915 of Albert Einstein's general theory of relativity, followed by major observational discoveries in the 1920s: first, Edwin Hubble discovered that the universe contains a huge number of external galaxies beyond our own Milky Way; then, work by Vesto Slipher and others showed that the universe is expanding. These advances made it possible to speculate about the origin of the universe, and allowed the establishment of the Big Bang Theory, by Georges Lemaitre, as the leading cosmological model. A few researchers still advocate a handful of alternative cosmologies; however, most cosmologists agree that the Big Bang theory explains the observations better.Dramatic advances in observational cosmology since the 1990s, including the cosmic microwave background, distant supernovae and galaxy redshift surveys, have led to the development of a standard model of cosmology. This model requires the universe to contain large amounts of dark matter and dark energy whose nature is currently not well understood, but the model gives detailed predictions that are in excellent agreement with many diverse observations.Cosmology draws heavily on the work of many disparate areas of research in theoretical and applied physics. Areas relevant to cosmology include particle physics experiments and theory, theoretical and observational astrophysics, general relativity, quantum mechanics, and plasma physics.