Galaxy Assembly through Mergers
... way. I imagine that putting up with me when I started rambling about galaxies was sometimes not easy, but you always listened. I treasure how you always found a way to make me smile and a word to comfort me. Thank you for being my safe haven. My friends have been the backbone of my life, especially ...
... way. I imagine that putting up with me when I started rambling about galaxies was sometimes not easy, but you always listened. I treasure how you always found a way to make me smile and a word to comfort me. Thank you for being my safe haven. My friends have been the backbone of my life, especially ...
The correlation between galaxy morphology and star
... North. Although the Sérsic index, measured by fitting a single Sérsic profile to a galaxy, is the most common approach to analyzing galaxy morphology, it is also useful to study morphologies with non-parametric measures such as Gini (G) (Abraham et al. 2003), M20 (Lotz et al. 2004), multiplicity ( ...
... North. Although the Sérsic index, measured by fitting a single Sérsic profile to a galaxy, is the most common approach to analyzing galaxy morphology, it is also useful to study morphologies with non-parametric measures such as Gini (G) (Abraham et al. 2003), M20 (Lotz et al. 2004), multiplicity ( ...
Niraj D. Welikala Thesis - D-Scholarship@Pitt
... and on these scales the density fluctuations are small in size (rms fluctuations of the order ∼ 0.1 at 1 Gpc). However, on scales of the order of 10 Mpc, the density fluctuations are large (∼ 1). The most apparent overdensities are therefore on small scales, less than 10 Mpc which are the typical sc ...
... and on these scales the density fluctuations are small in size (rms fluctuations of the order ∼ 0.1 at 1 Gpc). However, on scales of the order of 10 Mpc, the density fluctuations are large (∼ 1). The most apparent overdensities are therefore on small scales, less than 10 Mpc which are the typical sc ...
Molecular Gas in the Large Magellanic Cloud
... At the Centre for Astrophysics and Supercomputing, I am especially grateful to Matthew Bailes, who convinced me to move to Melbourne and introduced me to astronomy research while I was still a first-year undergraduate. The Centre will be hard-pressed to find a Director who promotes and advocates for s ...
... At the Centre for Astrophysics and Supercomputing, I am especially grateful to Matthew Bailes, who convinced me to move to Melbourne and introduced me to astronomy research while I was still a first-year undergraduate. The Centre will be hard-pressed to find a Director who promotes and advocates for s ...
Development of a Software Package for the Reduction and Analysis
... pixels. Sub-pixel accuracy (0.2−0.5 pixels) was also reached for the uncertainties in the astrometric transformation. Different modules of SPARVM were compared with 3 other software packages indicating that SPARVM is as good as, if not better than, those packages. SPARVM successfully reduced 6567 me ...
... pixels. Sub-pixel accuracy (0.2−0.5 pixels) was also reached for the uncertainties in the astrometric transformation. Different modules of SPARVM were compared with 3 other software packages indicating that SPARVM is as good as, if not better than, those packages. SPARVM successfully reduced 6567 me ...
PPT - MagellanTech
... Work continued in the SBS shops to finish final dressing of electronics and fabricate a detent system for the moving slit mask. These modifications were taken to Chile on May 1. Christoph Birk, Alan Bagish, and Tyson Hare finished the electronic and mechanical work. GISMO had not been returned to Ch ...
... Work continued in the SBS shops to finish final dressing of electronics and fabricate a detent system for the moving slit mask. These modifications were taken to Chile on May 1. Christoph Birk, Alan Bagish, and Tyson Hare finished the electronic and mechanical work. GISMO had not been returned to Ch ...
THE 2MASS WIDE-FIELD T DWARF SEARCH. II. DISCOVERY OF
... T dwarfs in the southern hemisphere, since it is more sensitive than the Deep Near-Infrared Survey of the Southern Sky (Epchtein et al. 1997), and there is as yet no equivalent to the Sloan Digital Sky Survey (SDSS; York et al. 2000) at southern latitudes. In this article, we present the discovery o ...
... T dwarfs in the southern hemisphere, since it is more sensitive than the Deep Near-Infrared Survey of the Southern Sky (Epchtein et al. 1997), and there is as yet no equivalent to the Sloan Digital Sky Survey (SDSS; York et al. 2000) at southern latitudes. In this article, we present the discovery o ...
The Early Evolution of Solids in Protoplanetary Disks
... product of the first growth of smaller particles, and have the potential of constraining models of early growth of solids. In this Thesis I obtained and analyzed new data in the millimetre for a sample of more than 50 young disks in three nearby star forming regions (Taurus, Ophiuchus, Orion); for a ...
... product of the first growth of smaller particles, and have the potential of constraining models of early growth of solids. In this Thesis I obtained and analyzed new data in the millimetre for a sample of more than 50 young disks in three nearby star forming regions (Taurus, Ophiuchus, Orion); for a ...
The VIMOS Ultra-Deep Survey (VUDS): Fast Increase in the Fraction
... in the local Universe. Hayes et al. (2014) and Atek et al. (2014) have found that Lyα photons escape more easily from galaxies with low dust content. At high redshift, although on samples that are much smaller than the one we use in this paper, a similar trend has been found by Kornei et al. (2010) ...
... in the local Universe. Hayes et al. (2014) and Atek et al. (2014) have found that Lyα photons escape more easily from galaxies with low dust content. At high redshift, although on samples that are much smaller than the one we use in this paper, a similar trend has been found by Kornei et al. (2010) ...
Me and My Shadow - Making the Sun-Earth - PS
... located in the Southern Hemisphere (between 0° and 23.5°S latitude), the gnomon shadow falls on the lower dial face (see example). Put a little theory into practice--assemble a simple equatorial sundial [courtesy StarDate Online and the University of Texas McDonald Observatory/SCOPE (Southwestern Co ...
... located in the Southern Hemisphere (between 0° and 23.5°S latitude), the gnomon shadow falls on the lower dial face (see example). Put a little theory into practice--assemble a simple equatorial sundial [courtesy StarDate Online and the University of Texas McDonald Observatory/SCOPE (Southwestern Co ...
Protoplanetary Disks and their Evolution
... quickly forms as more distant material with higher angular momentum falls inward. The disk will extend out to the centrifugal radius, which is expected to grow rapidly with time, R(t) ∝ Ω2 t3 , where Ω is the angular rotation rate of the core (Stahler et al. 1994). Disks should evolve rapidly, there ...
... quickly forms as more distant material with higher angular momentum falls inward. The disk will extend out to the centrifugal radius, which is expected to grow rapidly with time, R(t) ∝ Ω2 t3 , where Ω is the angular rotation rate of the core (Stahler et al. 1994). Disks should evolve rapidly, there ...
Euler: Genius Blind Astronomer Mathematician
... the promise of securing a position for Euler. The official invitation from Empress Catherina of Russia came trough Daniel Bernoulli at the beginning of the winter of 1726. While waiting to depart for Russia, the nineteen-year old Euler enrolled at the Medical Faculty in Basel to study medicine.5 At ...
... the promise of securing a position for Euler. The official invitation from Empress Catherina of Russia came trough Daniel Bernoulli at the beginning of the winter of 1726. While waiting to depart for Russia, the nineteen-year old Euler enrolled at the Medical Faculty in Basel to study medicine.5 At ...
An Atlas of Stellar Spectra
... we are able to correct for systematic errors due to interstellar absorption from observations of the color excesses of these stars. We have thus gained in two particulars: we have limited at one time the dispersion in luminosity and in normal color. The further refinement of a two-dimensional classi ...
... we are able to correct for systematic errors due to interstellar absorption from observations of the color excesses of these stars. We have thus gained in two particulars: we have limited at one time the dispersion in luminosity and in normal color. The further refinement of a two-dimensional classi ...
The Lupus clouds - European Southern Observatory
... evolution and perhaps the origin of the complex. The entire variety of objects related to the various stages of early stellar evolution are represented in Lupus, including some of the best studied T Tauri stars like RU Lup. The determination of many properties of the clouds, as well as their associa ...
... evolution and perhaps the origin of the complex. The entire variety of objects related to the various stages of early stellar evolution are represented in Lupus, including some of the best studied T Tauri stars like RU Lup. The determination of many properties of the clouds, as well as their associa ...
Zweijahresbericht 2000-2001
... by Günther’s moving spirit – and impressive work load (7 days a week at all geographic longitudes!) – now came to an end. We all would like to use this public place to express our sincerest thanks for his outstanding and hearty engagement for the institute and astronomy in general. A year earlier, ...
... by Günther’s moving spirit – and impressive work load (7 days a week at all geographic longitudes!) – now came to an end. We all would like to use this public place to express our sincerest thanks for his outstanding and hearty engagement for the institute and astronomy in general. A year earlier, ...
Type Ia supernova spectral features in the context of their host
... in Maguire et al. (2014). Multicolour light curves were not obtained by default for all SNe; instead they were assembled in g, r and i via triggered observations on other robotic facilities, e.g. the Liverpool Telescope (LT; Steele et al. 2004), the Palomar 60-inch (P60), and the Las Cumbres Observa ...
... in Maguire et al. (2014). Multicolour light curves were not obtained by default for all SNe; instead they were assembled in g, r and i via triggered observations on other robotic facilities, e.g. the Liverpool Telescope (LT; Steele et al. 2004), the Palomar 60-inch (P60), and the Las Cumbres Observa ...
PhD thesis
... en los últimos años más me han ayudado a conseguir concluir esta tesis doctoral. Empezaré agradeciendo el apoyo a mis directores de tesis. Gràcies Robert, moltes gràcies per haver-me introduı̈t en el món de la radioastronomia, de la formació estel·lar, i molt més important, en el món de la ...
... en los últimos años más me han ayudado a conseguir concluir esta tesis doctoral. Empezaré agradeciendo el apoyo a mis directores de tesis. Gràcies Robert, moltes gràcies per haver-me introduı̈t en el món de la radioastronomia, de la formació estel·lar, i molt més important, en el món de la ...
Mid-infrared Properties of Seyfert Galaxies: the IRAS 12um Sample
... Peak-up imaging (13-18.5 and 18.5-26 m) Acquisition of sources with poorly known positions and 0.5 500 mJy. Peak-up on the science target or a nearby offset star whose relative position is accurately known. ...
... Peak-up imaging (13-18.5 and 18.5-26 m) Acquisition of sources with poorly known positions and 0.5 500 mJy. Peak-up on the science target or a nearby offset star whose relative position is accurately known. ...
The Lake Baikal Three Messenger Conference
... – X-ray Astronomy and Polarimery Presenters: COSTA, Enrico – Implications of the study of galaxy clusters and cosmic large-scale structure on neutrino masses and Dark Matter Presenters: BÖHRINGER, Hans – Decaying dark matter search with NuSTAR deep sky observations Presenters: MALYSHEV, Denys ...
... – X-ray Astronomy and Polarimery Presenters: COSTA, Enrico – Implications of the study of galaxy clusters and cosmic large-scale structure on neutrino masses and Dark Matter Presenters: BÖHRINGER, Hans – Decaying dark matter search with NuSTAR deep sky observations Presenters: MALYSHEV, Denys ...
Characterization of the physical properties of the ROSETTA target
... mm-sized or larger particles (Agarwal 2007, and references therein). These dust grains have low emission speed (about m/s) and are little sensitive to solar radiation pressure, thus they remain close to the comet orbit for two or more revolutions around the Sun. They appear as a faint linear structu ...
... mm-sized or larger particles (Agarwal 2007, and references therein). These dust grains have low emission speed (about m/s) and are little sensitive to solar radiation pressure, thus they remain close to the comet orbit for two or more revolutions around the Sun. They appear as a faint linear structu ...
International Ultraviolet Explorer
The International Ultraviolet Explorer (IUE) was an astronomical observatory satellite primarily designed to take ultraviolet spectra. The satellite was a collaborative project between NASA, the UK Science Research Council and the European Space Agency (ESA). The mission was first proposed in early 1964, by a group of scientists in the United Kingdom, and was launched on January 26, 1978 aboard a NASA Delta rocket. The mission lifetime was initially set for 3 years, but in the end it lasted almost 18 years, with the satellite being shut down in 1996. The switch-off occurred for financial reasons, while the telescope was still functioning at near original efficiency.It was the first space observatory to be operated in real time by astronomers who visited the groundstations in the United States and Europe. Astronomers made over 104,000 observations using the IUE, of objects ranging from solar system bodies to distant quasars. Among the significant scientific results from IUE data were the first large scale studies of stellar winds, accurate measurements of the way interstellar dust absorbs light, and measurements of the supernova SN1987A which showed that it defied stellar evolution theories as they then stood. When the mission ended, it was considered the most successful astronomical satellite ever.