from z=0 to z=1
... 6. LBGs and SCUBA galaxies (UV and IR selected galaxies at z~3) do not overlap with each other very much. SCUBA galaxies have significantly higher SFR, higher attenuation, higher stellar mass, and higher correlation length than LBGs. 7. At intermediate redshifts of z~0.6, UV selected galaxies show m ...
... 6. LBGs and SCUBA galaxies (UV and IR selected galaxies at z~3) do not overlap with each other very much. SCUBA galaxies have significantly higher SFR, higher attenuation, higher stellar mass, and higher correlation length than LBGs. 7. At intermediate redshifts of z~0.6, UV selected galaxies show m ...
ASI 2017 Abstract Book - Astronomical Society of India
... One of the most outstanding challenges in extragalactic astronomy is to identify the astrophysical processes responsible for transforming simple dark matter haloes into the heterogenous population of galaxies inhabiting today's Universe. How did different morphological types form and evolve? Does th ...
... One of the most outstanding challenges in extragalactic astronomy is to identify the astrophysical processes responsible for transforming simple dark matter haloes into the heterogenous population of galaxies inhabiting today's Universe. How did different morphological types form and evolve? Does th ...
Polarimetry in Astrophysics and Cosmology
... 2.7 M17 polarization fraction vectors are plotted over the 450 um uncalibrated flux map. Thick vectors are detected with greater than or equal to 3σ level and thin vectors are between 2σ and 3σ level. The circle on the bottom right shows the SHARP beamsize. Some parts of the flux map is removed due ...
... 2.7 M17 polarization fraction vectors are plotted over the 450 um uncalibrated flux map. Thick vectors are detected with greater than or equal to 3σ level and thin vectors are between 2σ and 3σ level. The circle on the bottom right shows the SHARP beamsize. Some parts of the flux map is removed due ...
Annual Report 2011 - Max Planck Institute for Astrophysics
... In addition to the central MPA computer services, both the Planck Surveyor project and the SDSS group operate their own computer clusters. The former installation is designed in a similar fashion as the general system, and is maintained by an MPA system manager. The SDSS system is MS Windows based, ...
... In addition to the central MPA computer services, both the Planck Surveyor project and the SDSS group operate their own computer clusters. The former installation is designed in a similar fashion as the general system, and is maintained by an MPA system manager. The SDSS system is MS Windows based, ...
Clusters as laboratories for the study of galaxy evolution
... “The difference in the degree of evolution between our field sample and published cluster galaxies suggests a more recent formation epoch, around z=1.5 for field galaxies compared to z>2.0 for cluster galaxies. The magnitude difference implies that the field early-type galaxies are about 2 Gyr young ...
... “The difference in the degree of evolution between our field sample and published cluster galaxies suggests a more recent formation epoch, around z=1.5 for field galaxies compared to z>2.0 for cluster galaxies. The magnitude difference implies that the field early-type galaxies are about 2 Gyr young ...
PDF - STRW Local - Universiteit Leiden
... Leiden Observatory is part of the Netherlands Research School for Astronomy (NOVA). Scientific research at Leiden Observatory ranges from studying how the Earth and the Solar System have formed and how this compares to other planetary systems, to the origin and evolution of the Milky Way and the Uni ...
... Leiden Observatory is part of the Netherlands Research School for Astronomy (NOVA). Scientific research at Leiden Observatory ranges from studying how the Earth and the Solar System have formed and how this compares to other planetary systems, to the origin and evolution of the Milky Way and the Uni ...
T3-Cosmic Star Formation History
... basis of their optical rest-frame light and to chart the evolution of the global stellar mass density (SMD) at 0 < z < 3 (Dickinson et al. 2003). The Galaxy Evolution Explorer (GALEX) satellite has quantified the UV galaxy luminosity function (LF) of galaxies in the local Universe and its evolution a ...
... basis of their optical rest-frame light and to chart the evolution of the global stellar mass density (SMD) at 0 < z < 3 (Dickinson et al. 2003). The Galaxy Evolution Explorer (GALEX) satellite has quantified the UV galaxy luminosity function (LF) of galaxies in the local Universe and its evolution a ...
Galaxies
... model of galaxy evolution and cosmology based on the paradigm that galaxies form hierarchically around peaks in the dark matter density distribution. Within this framework, astronomers have made great progress in understanding the large-scale clustering of galaxies, as biased tracers of the underlyi ...
... model of galaxy evolution and cosmology based on the paradigm that galaxies form hierarchically around peaks in the dark matter density distribution. Within this framework, astronomers have made great progress in understanding the large-scale clustering of galaxies, as biased tracers of the underlyi ...
– 1 – 1. Galaxy Observations 1.1.
... is bimodal, suggesting a clear division between old and “dead” galaxies and galaxies with more recent star formation. Their second paper (Kaufmann, Heckman & White et al, 2003, MNRAS, 341, 54) proceeds to use the above characterizations to study the relations between stellar mass, star formation his ...
... is bimodal, suggesting a clear division between old and “dead” galaxies and galaxies with more recent star formation. Their second paper (Kaufmann, Heckman & White et al, 2003, MNRAS, 341, 54) proceeds to use the above characterizations to study the relations between stellar mass, star formation his ...
A Teacher`s Guide to the Universe
... http://www.astro.princeton.edu/~clark/teachersguide.html (1 of 2) [1/31/2001 10:42:38 AM] ...
... http://www.astro.princeton.edu/~clark/teachersguide.html (1 of 2) [1/31/2001 10:42:38 AM] ...
physics before and after einstein
... This role he heartily embraced, among other things by joining in 1922 the Committee on Intellectual Cooperation of the League of Nations, which had been established in 1919. In 1916 he published the first complete account of general relativity. It had been preceded by nine years of thinking, publish ...
... This role he heartily embraced, among other things by joining in 1922 the Committee on Intellectual Cooperation of the League of Nations, which had been established in 1919. In 1916 he published the first complete account of general relativity. It had been preceded by nine years of thinking, publish ...
$doc.title
... The Big Bang theory of cosmology rests on two theoretical pillars: Einstein’s theory of General Relativity and what is known as the Cosmological Principle. Einstein’s theory provides a mathematical framework for describing gravity as a distortion of space and time and is a generalization of Newton’s ...
... The Big Bang theory of cosmology rests on two theoretical pillars: Einstein’s theory of General Relativity and what is known as the Cosmological Principle. Einstein’s theory provides a mathematical framework for describing gravity as a distortion of space and time and is a generalization of Newton’s ...
Harald Maurer – The Principle of Existence Edition
... book tries to explain why the physicists had to discover their theories and what is really behind the phenomena. Will our theory be dynamite for arguments and discussions? Certainly not at once. In the eyes of the scientists, he who opposes the valid paradigms is a crackpot, a crank, or a troll and ...
... book tries to explain why the physicists had to discover their theories and what is really behind the phenomena. Will our theory be dynamite for arguments and discussions? Certainly not at once. In the eyes of the scientists, he who opposes the valid paradigms is a crackpot, a crank, or a troll and ...
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 ...
The science case for - Astrophysics
... of which we are made. Perhaps most exotic of all, some new force seems to be stretching space-time, accelerating the expansion of the Universe. The nature of this force, which controls the future of the Universe, remains quite unknown. Astronomy is a technology-enabled science: progress in astronom ...
... of which we are made. Perhaps most exotic of all, some new force seems to be stretching space-time, accelerating the expansion of the Universe. The nature of this force, which controls the future of the Universe, remains quite unknown. Astronomy is a technology-enabled science: progress in astronom ...
Science with the Constellation
... 1.2 The Ultimate Limits of Gravity Since their discovery, quasars and active galactic nuclei (AGN) have stood out as uniquely luminous objects in the Universe. Today we are confident that their ultimate power source is the release of gravitational energy sustained by an accretion disk, which is fee ...
... 1.2 The Ultimate Limits of Gravity Since their discovery, quasars and active galactic nuclei (AGN) have stood out as uniquely luminous objects in the Universe. Today we are confident that their ultimate power source is the release of gravitational energy sustained by an accretion disk, which is fee ...
Time Travel and Warp Drives
... is seen to occur for subatomic particles at high energy accelerators, such as that at Fermi National Laboratory, or the new Large Hadron Collider (LHC) at the European Organization for Nuclear Research (CERN) in Geneva, where such particles attain speeds very close to the speed of light. (Sending la ...
... is seen to occur for subatomic particles at high energy accelerators, such as that at Fermi National Laboratory, or the new Large Hadron Collider (LHC) at the European Organization for Nuclear Research (CERN) in Geneva, where such particles attain speeds very close to the speed of light. (Sending la ...
Chapter 24
... Southern Hemisphere. Named for the 16th-century Portuguese explorer Ferdinand Magellan, whose around-the-world expedition first brought word of these fuzzy patches of light to Europe, they are dwarf irregular (Irr I) galaxies, gravitationally bound to our own Milky Way Galaxy. They orbit our Galaxy ...
... Southern Hemisphere. Named for the 16th-century Portuguese explorer Ferdinand Magellan, whose around-the-world expedition first brought word of these fuzzy patches of light to Europe, they are dwarf irregular (Irr I) galaxies, gravitationally bound to our own Milky Way Galaxy. They orbit our Galaxy ...
Measuring distances to the edge of the local group
... linear data trend. This does not rule out the possibility that something in the physics has changed, but rather shows that using certain measuring techniques, a more linear TF relation can be found for varying galaxy sizes. The central question that initiated this project was whether the TF relation ...
... linear data trend. This does not rule out the possibility that something in the physics has changed, but rather shows that using certain measuring techniques, a more linear TF relation can be found for varying galaxy sizes. The central question that initiated this project was whether the TF relation ...
LIGO I - Indico
... GWs aren’t just a new band, they’re a new spectrum, with very different and complementary properties to EM waves. • Vibrations of space-time, not in space-time • Emitted by coherent motion of huge masses moving at near light-speed; not vibrations of electrons in atoms • Can’t be absorbed, scattered, ...
... GWs aren’t just a new band, they’re a new spectrum, with very different and complementary properties to EM waves. • Vibrations of space-time, not in space-time • Emitted by coherent motion of huge masses moving at near light-speed; not vibrations of electrons in atoms • Can’t be absorbed, scattered, ...
A Zoo of Galaxies - Cambridge University Press
... in order to reveal its size and mass. Hubble is most famous for a discovery which revolutionised extragalactic astronomy in its ability to provide a relatively quick and easy way to make these distance estimates. In 1929, Edwin Hubble used a sample of just 24 nearby galaxies to make this discovery. ...
... in order to reveal its size and mass. Hubble is most famous for a discovery which revolutionised extragalactic astronomy in its ability to provide a relatively quick and easy way to make these distance estimates. In 1929, Edwin Hubble used a sample of just 24 nearby galaxies to make this discovery. ...
Galaxies
... The radiation from these galaxies is called nonstellar radiation Many luminous galaxies are experiencing an outburst of star formation, probably due to interactions with a neighbor These galaxies are called starburst galaxies, and we will discuss them later The galaxies we will discuss now are those ...
... The radiation from these galaxies is called nonstellar radiation Many luminous galaxies are experiencing an outburst of star formation, probably due to interactions with a neighbor These galaxies are called starburst galaxies, and we will discuss them later The galaxies we will discuss now are those ...
UNIT 2—THE BIG BANG
... were Mars, Jupiter, and Saturn. Past Saturn was a final sphere that had all the stars attached to it. This final sphere revolved around the other ones. This idea of the Universe did not fit exactly with all of Ptolemy’s observations. He knew that the size, motion, and brightness of the planets chang ...
... were Mars, Jupiter, and Saturn. Past Saturn was a final sphere that had all the stars attached to it. This final sphere revolved around the other ones. This idea of the Universe did not fit exactly with all of Ptolemy’s observations. He knew that the size, motion, and brightness of the planets chang ...
Big History`s approach to knowledge
... were Mars, Jupiter, and Saturn. Past Saturn was a final sphere that had all the stars attached to it. This final sphere revolved around the other ones. This idea of the Universe did not fit exactly with all of Ptolemy’s observations. He knew that the size, motion, and brightness of the planets chang ...
... were Mars, Jupiter, and Saturn. Past Saturn was a final sphere that had all the stars attached to it. This final sphere revolved around the other ones. This idea of the Universe did not fit exactly with all of Ptolemy’s observations. He knew that the size, motion, and brightness of the planets chang ...
Hubble Deep Field Academy -- Overview
... description, the concepts covered, prerequisites, and the target audience. Science Background: Provides information about the science behind the activity. It clarifies important concepts used in the activity and contains a message from the scientist who worked with the team to develop it. Lesson Pla ...
... description, the concepts covered, prerequisites, and the target audience. Science Background: Provides information about the science behind the activity. It clarifies important concepts used in the activity and contains a message from the scientist who worked with the team to develop it. Lesson Pla ...
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.