THE EVOLUTION OF GALAXY NUMBER DENSITY AT Z < 8 AND
... of galaxies evolves with time and redshift. These mass and luminosity functions are now just starting to be measured at high redshfits, and our primary data originates from mass functions calculated using deep and wide near-infrared and optical surveys with Hubble and ground based telescopes. As des ...
... of galaxies evolves with time and redshift. These mass and luminosity functions are now just starting to be measured at high redshfits, and our primary data originates from mass functions calculated using deep and wide near-infrared and optical surveys with Hubble and ground based telescopes. As des ...
Discovery and Study of Exotic Radio Pulsars Jason William Thomas
... and determine their luminosity distribution. This survey and the follow-up studies of our discoveries were a major undertaking, which required 6 proposals to the Arecibo observatory and over 400 hr of observations with the Arecibo telescope. I have been involved in this project since the very first o ...
... and determine their luminosity distribution. This survey and the follow-up studies of our discoveries were a major undertaking, which required 6 proposals to the Arecibo observatory and over 400 hr of observations with the Arecibo telescope. I have been involved in this project since the very first o ...
From Filamentary Networks to Dense Cores in Molecular Clouds
... nearby interstellar clouds and their potential importance for star formation have been pointed out by many authors for more than three decades. For example, Schneider and Elmegreen (1979) discussed the properties of 23 elongated dark nebulae, visible on optical plates and showing evidence of marked ...
... nearby interstellar clouds and their potential importance for star formation have been pointed out by many authors for more than three decades. For example, Schneider and Elmegreen (1979) discussed the properties of 23 elongated dark nebulae, visible on optical plates and showing evidence of marked ...
X-ray spectra of highly magnetized neutron stars in binary systems
... If such a neutron star is forming a binary system with a stellar companion, it can accrete material from its companion (see Section 2.3). Due to the depth of the gravitational well of the neutron star, the material gains tremendous speed during the accretion process. The kinetic energy is released w ...
... If such a neutron star is forming a binary system with a stellar companion, it can accrete material from its companion (see Section 2.3). Due to the depth of the gravitational well of the neutron star, the material gains tremendous speed during the accretion process. The kinetic energy is released w ...
The effect of dark matter capture on binary stars
... The possibility of directly observing stars powered by WIMP annihilation is the driving force behind this project. In this project I have modelled collisions between WIMPs and atomic nuclei, via the weak interaction. Combined with an N-body simulation, I have been able to model WIMP capture in both ...
... The possibility of directly observing stars powered by WIMP annihilation is the driving force behind this project. In this project I have modelled collisions between WIMPs and atomic nuclei, via the weak interaction. Combined with an N-body simulation, I have been able to model WIMP capture in both ...
Evolution of Stars and Stellar Populations
... work, the set of differential equations that describes the structure and evolution of stars, and the numerical techniques to solve them. Chapters 4 to 7 present both a qualitative and quantitative picture of the life cycle of single stars (although we give some basic information about the evolution ...
... work, the set of differential equations that describes the structure and evolution of stars, and the numerical techniques to solve them. Chapters 4 to 7 present both a qualitative and quantitative picture of the life cycle of single stars (although we give some basic information about the evolution ...
The Hunt for Recoiled Black Holes in the Milky Way`s
... Double Imaging Spectrograph (DIS) on the 3.5-m telescope with a slit width of 1.5”. The grating used was the B400 with 400 lines per millimeter on the blue side and R300 with 300 lines per millimeter on the red side. These gratings were centered on wavelengths of 4398 Å in the blue and 7493 Å in t ...
... Double Imaging Spectrograph (DIS) on the 3.5-m telescope with a slit width of 1.5”. The grating used was the B400 with 400 lines per millimeter on the blue side and R300 with 300 lines per millimeter on the red side. These gratings were centered on wavelengths of 4398 Å in the blue and 7493 Å in t ...
chapter 4
... Primer Semiconductors - only what is needed here Introduction to band structure: in a metal an electron interacts with a large number of atoms (order NA ) → discrete atomic levels form a group of N very closely spaced levels, ‘band’ electrons in a band similar to particles in a box or potential well ...
... Primer Semiconductors - only what is needed here Introduction to band structure: in a metal an electron interacts with a large number of atoms (order NA ) → discrete atomic levels form a group of N very closely spaced levels, ‘band’ electrons in a band similar to particles in a box or potential well ...
γ Doradus pulsation in two pre-main sequence stars discovered by
... (2006) listed the star as a cluster member according to its radial velocity. The membership probability is given as 94% by Vasilevskis et al. (1965). King (1998) reported an effective temperature (T eff ) of 6219 ± 140 K using the B−V and V −I photometry of Sung et al. (1997) and the calibrations of B ...
... (2006) listed the star as a cluster member according to its radial velocity. The membership probability is given as 94% by Vasilevskis et al. (1965). King (1998) reported an effective temperature (T eff ) of 6219 ± 140 K using the B−V and V −I photometry of Sung et al. (1997) and the calibrations of B ...
The Relation between Interstellar Turbulence and Star Formation
... Understanding the formation of stars in galaxies is central to much of modern astrophysics. For several decades it has been thought that the star formation process is primarily controlled by the interplay between gravity and magnetostatic support, modulated by neutral-ion drift. Recently, however, b ...
... Understanding the formation of stars in galaxies is central to much of modern astrophysics. For several decades it has been thought that the star formation process is primarily controlled by the interplay between gravity and magnetostatic support, modulated by neutral-ion drift. Recently, however, b ...
IDEA MAN
... examine a few galaxies at a time. Fortunately, Baade had heard of a special telescope that could capture huge numbers of galaxies in a single, wideangle photograph. Zwicky persuaded ...
... examine a few galaxies at a time. Fortunately, Baade had heard of a special telescope that could capture huge numbers of galaxies in a single, wideangle photograph. Zwicky persuaded ...
The occurrence of nitrogen-enhanced metal
... present a semi-analytical model for binary population synthesis, based on AGB models in which low-mass stars (0.8–1.5 M ) at [Fe/H] < −2.5 produce carbon and s-elements by dual shell flashes (see Sect. 5 for details). While this increases the parameter space for making CEMP-s stars considerably, it ...
... present a semi-analytical model for binary population synthesis, based on AGB models in which low-mass stars (0.8–1.5 M ) at [Fe/H] < −2.5 produce carbon and s-elements by dual shell flashes (see Sect. 5 for details). While this increases the parameter space for making CEMP-s stars considerably, it ...
¯ t Analysis with Taus in the Final State
... simulation (squares) as a function of pT (left) and η (right) of the visible products of the τ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.22 Tau rejection factor on tt̄ events, normalized to cone 0.4 truth jets, for corrected ATLFAST (triangles) and full simu ...
... simulation (squares) as a function of pT (left) and η (right) of the visible products of the τ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.22 Tau rejection factor on tt̄ events, normalized to cone 0.4 truth jets, for corrected ATLFAST (triangles) and full simu ...
... Baade (1982) attributed the short periodic lpv to non-radial pulsations (nrp). Further detailed studies of a few well-observed objects led to a complete and consistent multimode modelling of the observed variations (Rivinius et al. 2001; Maintz et al. 2003; Neiner et al. 2005a). In addition, high-pr ...
Neutron Stars and the Determination of the Dense Matter Equation
... A physical understanding of the behaviour of cold ultra-dense matter – at and above nuclear density – can only be achieved by the study of neutron stars. The surface thermal emission from neutron stars in quiescent low-mass X-ray binaries (qLMXBs) inside globular clusters has proven useful for that ...
... A physical understanding of the behaviour of cold ultra-dense matter – at and above nuclear density – can only be achieved by the study of neutron stars. The surface thermal emission from neutron stars in quiescent low-mass X-ray binaries (qLMXBs) inside globular clusters has proven useful for that ...
a study for the propagation of electromagnetic waves over
... propagation constants of the various waves in the radial direction from the source. This gives rise to the well-known Sommerfeld integrals which are highly oscillatory and slowly-decaying in nature, especially when the source is mounted just on top of a planar boundary between two media of arbitrary ...
... propagation constants of the various waves in the radial direction from the source. This gives rise to the well-known Sommerfeld integrals which are highly oscillatory and slowly-decaying in nature, especially when the source is mounted just on top of a planar boundary between two media of arbitrary ...
elt science case
... The prospects for the use of GRBs as standard candles clearly depend on the increase of the number of detected GRBs which satisfy the Epeak-E correlation. Many events are required to test and fully calibrate this correlation. Clearly the extension of the sample in the coming years will also extend ...
... The prospects for the use of GRBs as standard candles clearly depend on the increase of the number of detected GRBs which satisfy the Epeak-E correlation. Many events are required to test and fully calibrate this correlation. Clearly the extension of the sample in the coming years will also extend ...
ThesisBertVercnocke Cover - Departement Natuurkunde en
... that arise as low energy limits of string theory. Two main topics concerning black holes are treated, a third topic does not concern black holes. First, the structure of the equations of motion underlying black hole solutions is considered. String theory and the low energy gravity theories that foll ...
... that arise as low energy limits of string theory. Two main topics concerning black holes are treated, a third topic does not concern black holes. First, the structure of the equations of motion underlying black hole solutions is considered. String theory and the low energy gravity theories that foll ...