Article PDF - IOPscience
... and broadband colors with the clumpiness parameter S, the uniquely large asymmetries of 66 galaxies undergoing mergers, and the correlation of bulge to total light ratios, and stellar masses, with the concentration index. As an obvious goal is to use this system at high redshifts to trace evolution, ...
... and broadband colors with the clumpiness parameter S, the uniquely large asymmetries of 66 galaxies undergoing mergers, and the correlation of bulge to total light ratios, and stellar masses, with the concentration index. As an obvious goal is to use this system at high redshifts to trace evolution, ...
SPICA Yellow Book
... ionisation potential. Using ratios between lines with different ionisation or critical densities, we can trace out a wide range of different physical-excitation conditions (Spinoglio & Malkan 1992). ...
... ionisation potential. Using ratios between lines with different ionisation or critical densities, we can trace out a wide range of different physical-excitation conditions (Spinoglio & Malkan 1992). ...
Mapping the Pathways of Galaxy Transformation Across Time and
... phenomenon: the initial configuration of the matter density field. This “density-driven growth” and “starburst recycling” picture is quite different from the dominant “growand-quench” narrative, yet both describe the data well. As such, I contend that ours is a viable alternative framework, but curr ...
... phenomenon: the initial configuration of the matter density field. This “density-driven growth” and “starburst recycling” picture is quite different from the dominant “growand-quench” narrative, yet both describe the data well. As such, I contend that ours is a viable alternative framework, but curr ...
Energy and Mass in Relativity Theory (321 Pages)
... SChrodinger work from cosmic-ray studies and studies of the northern lights, have by now been greatly supplemented by satellite measurements (see, for example,!"l). These measurements show that the magnetic field of the earth has the form of a magnetic dipole up to distances on the order of 6R + "" ...
... SChrodinger work from cosmic-ray studies and studies of the northern lights, have by now been greatly supplemented by satellite measurements (see, for example,!"l). These measurements show that the magnetic field of the earth has the form of a magnetic dipole up to distances on the order of 6R + "" ...
Gamma Ray Bursts
... Diversity of pulse shapes well explained by diversity of shapes and sizes of comets. Neutron stars are inside galactic disk. How to get isotropic distribution? Possible, if we see only nearby neutron stars. Having the number of neutron stars (from pulsar observations and supernovae) and the numer of ...
... Diversity of pulse shapes well explained by diversity of shapes and sizes of comets. Neutron stars are inside galactic disk. How to get isotropic distribution? Possible, if we see only nearby neutron stars. Having the number of neutron stars (from pulsar observations and supernovae) and the numer of ...
Elliptical Galaxies
... relatively bright in the center but fading rapidly with increasing radius. Elliptical galaxies are found mostly in the denser regions of the universe, from rich clusters to small groups; truely isolated ellipticals being relatively rare. Figure 1 shows the central region of the Coma cluster which is ...
... relatively bright in the center but fading rapidly with increasing radius. Elliptical galaxies are found mostly in the denser regions of the universe, from rich clusters to small groups; truely isolated ellipticals being relatively rare. Figure 1 shows the central region of the Coma cluster which is ...
A Spectroscopically Confirmed Excess of 24 micron Sources in a
... to determine rest-frame absolute magnitudes (Vega) and Kcorrections. As input, we use the MAG− AUTO photometry from the g′ BV r′ R imaging and assumed minimum photometric uncertainties in each bandpass of 0.05 mag. The photometry has been corrected for foreground Galactic extinction using the Schleg ...
... to determine rest-frame absolute magnitudes (Vega) and Kcorrections. As input, we use the MAG− AUTO photometry from the g′ BV r′ R imaging and assumed minimum photometric uncertainties in each bandpass of 0.05 mag. The photometry has been corrected for foreground Galactic extinction using the Schleg ...
Prof.P. Ravindran, Lattice Dynamics-1
... • Mechanical waves are waves which propagate through a material medium at a wave speed which depends on the elastic and inertial properties of that medium. • There are two basic types of wave motion for mechanical waves: longitudinal waves and transverse waves. ...
... • Mechanical waves are waves which propagate through a material medium at a wave speed which depends on the elastic and inertial properties of that medium. • There are two basic types of wave motion for mechanical waves: longitudinal waves and transverse waves. ...
Zero Point Energy
... from not only thermal energy (heat) but also from another type of radiation now known as classical electromagnetic zero point energy. Mr Sparnaay determined that not only did the zero point electromagnetic energy exist in a vacuum but also that it persisted even at a temperature of absolute zero. Th ...
... from not only thermal energy (heat) but also from another type of radiation now known as classical electromagnetic zero point energy. Mr Sparnaay determined that not only did the zero point electromagnetic energy exist in a vacuum but also that it persisted even at a temperature of absolute zero. Th ...
GRB prompt emission
... Hosts! • Hosts of long GRBs are star-forming galaxies • GRBs trace the stellar distribution (in distance from galaxy center) • GRBs occur in dense environments (star forming regions?) ...
... Hosts! • Hosts of long GRBs are star-forming galaxies • GRBs trace the stellar distribution (in distance from galaxy center) • GRBs occur in dense environments (star forming regions?) ...
June `98 Diploma - Mr. Clintberg`s Studyphysics!
... • Use only an HB pencil for the machine-scored answer sheet. • If you wish to change an answer, erase all traces of your first answer. • Consider all numbers used in the examination to be the result of a measurement or observation. • Do not fold the answer sheet. • The presiding examiner will collec ...
... • Use only an HB pencil for the machine-scored answer sheet. • If you wish to change an answer, erase all traces of your first answer. • Consider all numbers used in the examination to be the result of a measurement or observation. • Do not fold the answer sheet. • The presiding examiner will collec ...
GRB prompt emission
... Hosts! • Hosts of long GRBs are star-forming galaxies • GRBs trace the stellar distribution (in distance from galaxy center) • GRBs occur in dense environments (star forming regions?) ...
... Hosts! • Hosts of long GRBs are star-forming galaxies • GRBs trace the stellar distribution (in distance from galaxy center) • GRBs occur in dense environments (star forming regions?) ...
The Collision Between The Milky Way And Andromeda
... We also postulate that the Local Group volume contains close to the cosmic mean value of baryons, namely 16% (Spergel et al. 2003). Since the Milky Way and Andromeda galaxy models only include baryons in the galactic disk and bulge components, they are far short of this value. We therefore set the L ...
... We also postulate that the Local Group volume contains close to the cosmic mean value of baryons, namely 16% (Spergel et al. 2003). Since the Milky Way and Andromeda galaxy models only include baryons in the galactic disk and bulge components, they are far short of this value. We therefore set the L ...
Lab 14 Galaxy Morphology
... Some of these fuzzy nebulae, however, did not break-up into stars no matter how big a telescope was used to look at them. While many of these nebulae are clouds of glowing hydrogen gas within the Milky Way galaxy (HII regions), others (some of which resembled pinwheels) were true galaxies–similar to ...
... Some of these fuzzy nebulae, however, did not break-up into stars no matter how big a telescope was used to look at them. While many of these nebulae are clouds of glowing hydrogen gas within the Milky Way galaxy (HII regions), others (some of which resembled pinwheels) were true galaxies–similar to ...
2 Justification and benefits in joining TMT
... improve our international visibility, we must invest in science and technology, in particular basic science, which provides the fertile soil for applied technologies to prosper not only at present but also in the future. As mentioned before, the Chinese astronomical community has made much progress ...
... improve our international visibility, we must invest in science and technology, in particular basic science, which provides the fertile soil for applied technologies to prosper not only at present but also in the future. As mentioned before, the Chinese astronomical community has made much progress ...
New Worlds, New Horizons in Astronomy and
... The National Academy of Sciences is a private, nonprofit, self-perpetuating society of distinguished scholars engaged in scientific and engineering research, dedicated to the furtherance of science and technology and to their use for the general welfare. Upon the authority of the charter granted to ...
... The National Academy of Sciences is a private, nonprofit, self-perpetuating society of distinguished scholars engaged in scientific and engineering research, dedicated to the furtherance of science and technology and to their use for the general welfare. Upon the authority of the charter granted to ...
Lecture 2
... Completing the z~3 Picture • Using molecular line emission at z=3, could probe cool gas • “low-excitation lines will map out a larger fraction of the ISM in these galaxies and…study in detail the spacially resolved kinematic structure of most of the gas…which resides in the cold phase” (Carilli & B ...
... Completing the z~3 Picture • Using molecular line emission at z=3, could probe cool gas • “low-excitation lines will map out a larger fraction of the ISM in these galaxies and…study in detail the spacially resolved kinematic structure of most of the gas…which resides in the cold phase” (Carilli & B ...
2. The X-ray-Radio correlation for bulgeless galaxies
... Active Galactic Nuclei (AGN) and in Star Forming galaxies. For the first case, the Xray/Radio correlation seems to present different slopes for Radio-loud and Radio-quiet AGN and may be used to estimate the mass of the central black hole in these galaxies, while in the second case the correlation ap ...
... Active Galactic Nuclei (AGN) and in Star Forming galaxies. For the first case, the Xray/Radio correlation seems to present different slopes for Radio-loud and Radio-quiet AGN and may be used to estimate the mass of the central black hole in these galaxies, while in the second case the correlation ap ...
Galaxy Sorting
... bound together by their mutual gravity. Our Sun is just one of more than one hundred billion stars that make up the Milky Way Galaxy. Note that other galaxies are very far away from us. Because of their size and distance, we cannot see any particular galaxy from more than one angle. You can't mov ...
... bound together by their mutual gravity. Our Sun is just one of more than one hundred billion stars that make up the Milky Way Galaxy. Note that other galaxies are very far away from us. Because of their size and distance, we cannot see any particular galaxy from more than one angle. You can't mov ...
Galaxies - hwchemistry
... of galaxies, however, they find that the measured masses are much larger than expected from the luminosities of the galaxies. • This seems to be true of most galaxies. – Measured masses of galaxies amount to 10 to 100 times more mass than you would expect from the appearance of galaxies. ...
... of galaxies, however, they find that the measured masses are much larger than expected from the luminosities of the galaxies. • This seems to be true of most galaxies. – Measured masses of galaxies amount to 10 to 100 times more mass than you would expect from the appearance of galaxies. ...
Elements of Astrophysics
... • Preliminaries — We review aspects special relativity, Lagrangian and Hamiltonian dynamics, and the mathematics of random processes. • Radiation — The course follows quite closely the first few chapters of Rybicki and Lightman. We review the macroscopic properties of electromagnetic radiation; we b ...
... • Preliminaries — We review aspects special relativity, Lagrangian and Hamiltonian dynamics, and the mathematics of random processes. • Radiation — The course follows quite closely the first few chapters of Rybicki and Lightman. We review the macroscopic properties of electromagnetic radiation; we b ...
Science Case for the Chinese Participation of TMT
... improve our international visibility, we must invest in science and technology, in particular basic science, which provides the fertile soil for applied technologies to prosper not only at present but also in the future. As mentioned before, the Chinese astronomical community has made much progress ...
... improve our international visibility, we must invest in science and technology, in particular basic science, which provides the fertile soil for applied technologies to prosper not only at present but also in the future. As mentioned before, the Chinese astronomical community has made much progress ...
Chapter 10 Formation and evolution of the Local Group
... timescale are of course subject to many uncertainties. It is usually assumed that the Galaxy and M 31 formed nearby to each other, and took part in the general expansion of the universe. Around 4 Gyr ago, their mutual gravitational attraction overcame the general expansion and they began to approach ...
... timescale are of course subject to many uncertainties. It is usually assumed that the Galaxy and M 31 formed nearby to each other, and took part in the general expansion of the universe. Around 4 Gyr ago, their mutual gravitational attraction overcame the general expansion and they began to approach ...
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 ...
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.