Magnetic susceptibility, magnetization, magnetic moment and
... Abstract. Four years after the last LISA meeting, the NASA Astrophysics Data System (ADS) finds itself in the middle of major changes to the infrastructure and contents of its database. In this paper we highlight a number of features of great importance to librarians and discuss the additional funct ...
... Abstract. Four years after the last LISA meeting, the NASA Astrophysics Data System (ADS) finds itself in the middle of major changes to the infrastructure and contents of its database. In this paper we highlight a number of features of great importance to librarians and discuss the additional funct ...
A New Assessment of Dark Matter in the Milky Way Galaxy
... are distributed within and around these galaxies, accounting for the greater gravity and thus faster rotation than what would be predicted from the luminous mass alone. While this is accepted as fact and the dark matter distribution associated with various cosmic objects has been determined, a point ...
... are distributed within and around these galaxies, accounting for the greater gravity and thus faster rotation than what would be predicted from the luminous mass alone. While this is accepted as fact and the dark matter distribution associated with various cosmic objects has been determined, a point ...
cast-of-characters
... self-sufficient, and sterile. This experiment, however, has one minor flaw, and that is photosensitivity. [Ratchet] - Now a retired hero and former member of the Q-Force, the lombax spends the majority of his time at home, contemplating the past and sometimes about his abrupt decision to distance hi ...
... self-sufficient, and sterile. This experiment, however, has one minor flaw, and that is photosensitivity. [Ratchet] - Now a retired hero and former member of the Q-Force, the lombax spends the majority of his time at home, contemplating the past and sometimes about his abrupt decision to distance hi ...
absolute brightness: The apparent brightness a star would have if it
... closed universe: Geometry that the universe as a whole would have if the density of matter is above the critical value. A closed universe is finite in extent, and has no edge, like the surface of a sphere. It has enough mass to stop the present expansion, and will eventually collapse. clusters of ga ...
... closed universe: Geometry that the universe as a whole would have if the density of matter is above the critical value. A closed universe is finite in extent, and has no edge, like the surface of a sphere. It has enough mass to stop the present expansion, and will eventually collapse. clusters of ga ...
GG_CERN_0707
... Either (i) determine mass profile from projected dispersion profile, with assumed isotropy, and smooth functional fit to the light profile Or (ii) assume a parameterised mass model M(r) and velocity dispersion anisotropy β(r) and fit dispersion profile to find best forms of these (for fixed light ...
... Either (i) determine mass profile from projected dispersion profile, with assumed isotropy, and smooth functional fit to the light profile Or (ii) assume a parameterised mass model M(r) and velocity dispersion anisotropy β(r) and fit dispersion profile to find best forms of these (for fixed light ...
Origin of the Solar System
... The second element of modern cosmogony is observations of star-forming regions and protostars. Some examples of the most important objects of such observations are: • The structure and chemistry of molecular clouds; • Embedded Infra-Red (IR) Sources; • Pre-Main Sequence stars (T Tauri stars) with an ...
... The second element of modern cosmogony is observations of star-forming regions and protostars. Some examples of the most important objects of such observations are: • The structure and chemistry of molecular clouds; • Embedded Infra-Red (IR) Sources; • Pre-Main Sequence stars (T Tauri stars) with an ...
absolute brightness: The apparent brightness a star would have if it
... closed universe: Geometry that the universe as a whole would have if the density of matter is above the critical value. A closed universe is finite in extent, and has no edge, like the surface of a sphere. It has enough mass to stop the present expansion, and will eventually collapse. clusters of ga ...
... closed universe: Geometry that the universe as a whole would have if the density of matter is above the critical value. A closed universe is finite in extent, and has no edge, like the surface of a sphere. It has enough mass to stop the present expansion, and will eventually collapse. clusters of ga ...
PDF only - at www.arxiv.org.
... buoyantly in the hot intracluster gas4 before later falling back. They act as dramatic markers of the feedback process by which energy is transferred from the central massive black hole to the surrounding gas. The mechanism by which the filaments are stabilized against tidal shear and dissipation in ...
... buoyantly in the hot intracluster gas4 before later falling back. They act as dramatic markers of the feedback process by which energy is transferred from the central massive black hole to the surrounding gas. The mechanism by which the filaments are stabilized against tidal shear and dissipation in ...
Peer-reviewed Article PDF - e
... disk, Figure 1). This would be in complete agreement with the conclusions of virial theory. However, it follows from experiments that the velocities of star rotation at distances larger than Rc remain nearly constant till the edge of the Galaxy. It follows from this fact that the longer is the dista ...
... disk, Figure 1). This would be in complete agreement with the conclusions of virial theory. However, it follows from experiments that the velocities of star rotation at distances larger than Rc remain nearly constant till the edge of the Galaxy. It follows from this fact that the longer is the dista ...
ATLASGAL -- The APEX telescope large area survey of the galaxy at
... opacity correction, as determined from skydips observed typically every two hours (see Siringo et al. 2009, for more details). In addition, the flux calibration is regularly (every hour) checked against primary calibrators (the planets Mars, Neptune and Uranus) or secondary calibrators (bright Galac ...
... opacity correction, as determined from skydips observed typically every two hours (see Siringo et al. 2009, for more details). In addition, the flux calibration is regularly (every hour) checked against primary calibrators (the planets Mars, Neptune and Uranus) or secondary calibrators (bright Galac ...
Quasars
... matched with very dim optical objects that looked like fuzzy, blue stars, but had strange spectra with a lot of ultraviolet excess. • One of them, 3C273 had its position very accurately measured by C. Hazard and co-workers, using lunar occultations. • In 1962, M. Schmidt obtained a spectrum of this ...
... matched with very dim optical objects that looked like fuzzy, blue stars, but had strange spectra with a lot of ultraviolet excess. • One of them, 3C273 had its position very accurately measured by C. Hazard and co-workers, using lunar occultations. • In 1962, M. Schmidt obtained a spectrum of this ...
determination of the distance to the galactic centre nigel clayton
... As shown in Figure 3, S2 is just one of many stars orbiting close to Sgr A*. At present, the orbits of the others are less well defined, whereas further observations of S2 have enabled its complete orbit to be measured, from which Gillessen et al. (2009) determined Ro = 8.3 0.3 kpc. Ghez et al. (2 ...
... As shown in Figure 3, S2 is just one of many stars orbiting close to Sgr A*. At present, the orbits of the others are less well defined, whereas further observations of S2 have enabled its complete orbit to be measured, from which Gillessen et al. (2009) determined Ro = 8.3 0.3 kpc. Ghez et al. (2 ...
10) Physics and Chemistry of the Diffuse Interstellar Medium
... Diffuse Interstellar Bands: Dependence on N(H2) ...
... Diffuse Interstellar Bands: Dependence on N(H2) ...
ON THE FORMATION OF MASSIVE STELLAR CLUSTERS
... terminal supernova (SN) explosions, they will begin to have an important impact on the collapsing cloud. For this to happen however, massive stars ought to form in sufficient numbers as to jointly stop the infall at least in the most central regions of the plateau. Otherwise, individual stars, despi ...
... terminal supernova (SN) explosions, they will begin to have an important impact on the collapsing cloud. For this to happen however, massive stars ought to form in sufficient numbers as to jointly stop the infall at least in the most central regions of the plateau. Otherwise, individual stars, despi ...
Are WE CORRECTLY Measuring the Star formation in galaxies?
... UV and Hα can be significantly affected by extinction (and by differing amounts) Possible stochastic sampling of IMF impacting observables Integrated optical light does not scale linearly with SFR Comparisons of stellar light with reprocessed stellar light ...
... UV and Hα can be significantly affected by extinction (and by differing amounts) Possible stochastic sampling of IMF impacting observables Integrated optical light does not scale linearly with SFR Comparisons of stellar light with reprocessed stellar light ...
Star Formation in Our Galaxy - Wiley-VCH
... Along with their gas, molecular clouds contain an admixture of small solid particles, the interstellar dust grains. These particles efficiently absorb light with wavelengths smaller than their diameters (about 0.1 µm) and reradiate this energy into the infrared. Regions where the dust effectively bl ...
... Along with their gas, molecular clouds contain an admixture of small solid particles, the interstellar dust grains. These particles efficiently absorb light with wavelengths smaller than their diameters (about 0.1 µm) and reradiate this energy into the infrared. Regions where the dust effectively bl ...
Chapter 27 Quasars, Active Galaxies, and Gamma
... • Early radio telescopes found radio emission from stars, nebulae, and some galaxies. • There were also point-like, or star-like, radio sources which varied rapidly these are the `quasi-stellar’ radio sources or quasars. • In visible light quasars appear as points, like stars. ...
... • Early radio telescopes found radio emission from stars, nebulae, and some galaxies. • There were also point-like, or star-like, radio sources which varied rapidly these are the `quasi-stellar’ radio sources or quasars. • In visible light quasars appear as points, like stars. ...
Science and the Universe - Wayne State University Physics and
... containing up to hundreds of thousands of stars and taking up a volume of space hundreds of light years across Stars have a long, but not infinite, life (believed to be billions of years) They die or collapse in spectacular ways 29 Jun 2005 ...
... containing up to hundreds of thousands of stars and taking up a volume of space hundreds of light years across Stars have a long, but not infinite, life (believed to be billions of years) They die or collapse in spectacular ways 29 Jun 2005 ...
The First Stars in the Universe
... that was clumpy and filamentary and possibly shaped like a disk. But because the dark-matter particles would not emit radiation or lose energy, they would remain scattered in the primordial cloud. Thus, the star-forming system would come to resemble a miniature galaxy, with a disk of ordinary matter ...
... that was clumpy and filamentary and possibly shaped like a disk. But because the dark-matter particles would not emit radiation or lose energy, they would remain scattered in the primordial cloud. Thus, the star-forming system would come to resemble a miniature galaxy, with a disk of ordinary matter ...
Question 1 The star Regulus, in the constellation Leo, appears
... . Which one of the following properties do Seyfert galaxies and the Milky Way Galaxy share? ...
... . Which one of the following properties do Seyfert galaxies and the Milky Way Galaxy share? ...
– 1 – 1. Cosmochronology
... called the “daughter”), can be measured. After all, the abundance of a decaying radioactive isotope is an negative exponential, Nr (t) = Nr (0) exp(−t/τr ). One looks for an unstable isotope of an element whose production is well understood, one with a suitable lifetime (preferably at least 1 Gyr, i ...
... called the “daughter”), can be measured. After all, the abundance of a decaying radioactive isotope is an negative exponential, Nr (t) = Nr (0) exp(−t/τr ). One looks for an unstable isotope of an element whose production is well understood, one with a suitable lifetime (preferably at least 1 Gyr, i ...
STEPHAN`S QUINTET
... Stephan's Quintet in the constellation Pegasus is al grouping of five galaxies of which four form the first compact galaxy group ever discovered. The group was discovered by Édouard Stephan in 1877 at Marseilles Observatory. These galaxies are of interest because of their violent collisions. Four of ...
... Stephan's Quintet in the constellation Pegasus is al grouping of five galaxies of which four form the first compact galaxy group ever discovered. The group was discovered by Édouard Stephan in 1877 at Marseilles Observatory. These galaxies are of interest because of their violent collisions. Four of ...