Multiple scattering polarization
... source of energy and the thermal radiation from brown dwarfs arises from the release of gravitational potential energy during their formation and governed by the interaction with the atmospheric material [5]. The distinct features of the spectra of brown dwarfs, e.g., gradual disappearance of VO, Ti ...
... source of energy and the thermal radiation from brown dwarfs arises from the release of gravitational potential energy during their formation and governed by the interaction with the atmospheric material [5]. The distinct features of the spectra of brown dwarfs, e.g., gradual disappearance of VO, Ti ...
Superbubble Activity in Star-Forming Galaxies M. S. Oey
... remain consistent with Lx predicted by the adiabatic model. It will thus be of great interest to determine Lx for these objects with XMMNewton or Chandra. Also, an interface region between the hot gas and cooler shells should generate intermediate temperatures and ions. Chu et al. (1994) searched a ...
... remain consistent with Lx predicted by the adiabatic model. It will thus be of great interest to determine Lx for these objects with XMMNewton or Chandra. Also, an interface region between the hot gas and cooler shells should generate intermediate temperatures and ions. Chu et al. (1994) searched a ...
GALAXIES 626
... Properties of the Salpeter IMF: • most of the stars (by number) are low mass stars • most of the mass in stars resides in low mass stars • following a burst of star formation, most of the luminosity comes from high mass stars Salpeter IMF must fail at low masses, since if we extrapolate to arbitrari ...
... Properties of the Salpeter IMF: • most of the stars (by number) are low mass stars • most of the mass in stars resides in low mass stars • following a burst of star formation, most of the luminosity comes from high mass stars Salpeter IMF must fail at low masses, since if we extrapolate to arbitrari ...
Dynamical properties of a large young disk galaxy at z=2.03⋆
... Very Large Telescope (VLT) are found to be similar to those of nearby galaxies in both shape and amplitude implying that some massive disks were already in place at z ∼ 1 (Vogt et al. 1996, 1997, Barden et al. 2003, Swinbank et al. 2006). Observations of z ∼ 2 galaxies have revealed ordered rotation ...
... Very Large Telescope (VLT) are found to be similar to those of nearby galaxies in both shape and amplitude implying that some massive disks were already in place at z ∼ 1 (Vogt et al. 1996, 1997, Barden et al. 2003, Swinbank et al. 2006). Observations of z ∼ 2 galaxies have revealed ordered rotation ...
Type Ia Supernovae
... Ic have been attributed to these events. This thesis, however is dedicated to the second group of supernovae, the thermonuclear explosions of degenerate carbon and oxygen rich material and lacking hydrogen - called Type Ia supernovae (SNe Ia). White dwarf stars are formed at the end of a typical sta ...
... Ic have been attributed to these events. This thesis, however is dedicated to the second group of supernovae, the thermonuclear explosions of degenerate carbon and oxygen rich material and lacking hydrogen - called Type Ia supernovae (SNe Ia). White dwarf stars are formed at the end of a typical sta ...
Imaging the Universe Robert Mutel A Laboratory Manual for Introductory Astronomy
... is expected. This worksheet is designed to help you either catch up, or remember the math that you were supposed to have learned in high school. Do not be intimidated by this worksheet! Most of what follows is the sort of math that you use in your everyday life, when calculating tips, or balancing y ...
... is expected. This worksheet is designed to help you either catch up, or remember the math that you were supposed to have learned in high school. Do not be intimidated by this worksheet! Most of what follows is the sort of math that you use in your everyday life, when calculating tips, or balancing y ...
Emission from dust in galaxies: Metallicity dependence
... The fraction of the cirrus component, η, remains to be determined. In this paper, an empirical value of η is simply adopted. According to Lonsdale Persson & Helou (1987), η ∼ 0.5–0.7 for their sample spiral galaxies. We use η = 0.5 as adopted in IHK00 (the value averaged for Usui et al. 1998’s sampl ...
... The fraction of the cirrus component, η, remains to be determined. In this paper, an empirical value of η is simply adopted. According to Lonsdale Persson & Helou (1987), η ∼ 0.5–0.7 for their sample spiral galaxies. We use η = 0.5 as adopted in IHK00 (the value averaged for Usui et al. 1998’s sampl ...
Elliptical Galaxies
... mixture of oblate and prolate figures. The discovery that elliptical galaxies are not flattened by their rotation has important implications for our ideas about how they form. Models where isolated massive clouds of gas collapse dissipationally and form stars rapidly always produce galaxies which ro ...
... mixture of oblate and prolate figures. The discovery that elliptical galaxies are not flattened by their rotation has important implications for our ideas about how they form. Models where isolated massive clouds of gas collapse dissipationally and form stars rapidly always produce galaxies which ro ...
Masses of Dwarf Satellites of the Milky Way
... Fig. 1.— Projected velocity dispersion profiles for eight bright dSphs, from Magellan/MMFS and MMT/Hectochelle data. Over-plotted are profiles calculated from isothermal, power-law, NFW and cored halos considered as prospective “universal” dSph halos (Section 5). For each type of halo we fit only fo ...
... Fig. 1.— Projected velocity dispersion profiles for eight bright dSphs, from Magellan/MMFS and MMT/Hectochelle data. Over-plotted are profiles calculated from isothermal, power-law, NFW and cored halos considered as prospective “universal” dSph halos (Section 5). For each type of halo we fit only fo ...
ALMA Science Results
... • Galaxies and Galactic Nuclei II (chair: Alberto Bolatto) – 13:30 - 14:00 (invited) Galaxies and galaxy nuclei with ALMA • Susanne Aalto, Chalmers University of Technology – Vibrationally excited molecules probe central regions but HCN and HCO+ are very optically thick owing to steep T gradient an ...
... • Galaxies and Galactic Nuclei II (chair: Alberto Bolatto) – 13:30 - 14:00 (invited) Galaxies and galaxy nuclei with ALMA • Susanne Aalto, Chalmers University of Technology – Vibrationally excited molecules probe central regions but HCN and HCO+ are very optically thick owing to steep T gradient an ...
Part I - User Web Areas at the University of York
... 1000 tonnes of heavy water in a 12 metre diameter transparent acrylic sphere viewed by approximately 9,600 PMTs 2 km underground in Ontario, Canada. Detection rate is about one neutrino per hour. Turned on in 1999 and was turned off on in 2006 although analysis of the data recorded still continues. ...
... 1000 tonnes of heavy water in a 12 metre diameter transparent acrylic sphere viewed by approximately 9,600 PMTs 2 km underground in Ontario, Canada. Detection rate is about one neutrino per hour. Turned on in 1999 and was turned off on in 2006 although analysis of the data recorded still continues. ...
new horizons pluto approach navigation
... Optical imaging of Pluto and Charon provides a powerful data type for the determination of the spacecraft approach trajectory and describing certain characteristics of Pluto and Charon. Optical data alone are insufficient for complete orbit determination but are an essential complement to the Dopple ...
... Optical imaging of Pluto and Charon provides a powerful data type for the determination of the spacecraft approach trajectory and describing certain characteristics of Pluto and Charon. Optical data alone are insufficient for complete orbit determination but are an essential complement to the Dopple ...
Type II SuperNova - University of Dayton
... astronomers) was observed in a nearby galaxy called the Large Magellanic Cloud. This was the first "nearby" supernova in the last 3 centuries, and for the first time astronomers not only observed the light show, but also detected 19 of the elusive neutrinos (the detectors observed electron anti-neut ...
... astronomers) was observed in a nearby galaxy called the Large Magellanic Cloud. This was the first "nearby" supernova in the last 3 centuries, and for the first time astronomers not only observed the light show, but also detected 19 of the elusive neutrinos (the detectors observed electron anti-neut ...
ULXs: General Properties and Variability - X
... luminous photo-ionized nebulae around them- require high luminosity to photoionize them •Quite a few have “soft” components well fit by low kT black body- consistent with high mass (Miller this meeting). ...
... luminous photo-ionized nebulae around them- require high luminosity to photoionize them •Quite a few have “soft” components well fit by low kT black body- consistent with high mass (Miller this meeting). ...
Dynamical Mass Measurements of Pre-Main
... the distance is well known.) Until recently, studies of angularly resolved binaries (“visual binaries,” or VBs) and spectroscopic binaries (SBs) have been entirely disconnected since the binaries detected as SBs had orbital separations that at the distance of star-forming regions fell far below the ...
... the distance is well known.) Until recently, studies of angularly resolved binaries (“visual binaries,” or VBs) and spectroscopic binaries (SBs) have been entirely disconnected since the binaries detected as SBs had orbital separations that at the distance of star-forming regions fell far below the ...
A) B) C) D) 1. Which graph best represents the altitude of Polaris
... Which statement best describes the observed changes in the altitude of Polaris made by the passenger during the voyage? A) Each night the altitude decreases in the northern sky. B) Each night the altitude decreases in the southern sky. C) Each night the altitude increases in the northern sky. D) Eac ...
... Which statement best describes the observed changes in the altitude of Polaris made by the passenger during the voyage? A) Each night the altitude decreases in the northern sky. B) Each night the altitude decreases in the southern sky. C) Each night the altitude increases in the northern sky. D) Eac ...
21 -26 August University of Exeter
... Organisation: Cardiff University Title: Observational review Abstract: The past few years have seen a great deal of spectacular large-scale surveys of star-forming regions across the Galaxy with unprecedented sensitivity and angular resolution. Combined with state-of-the-art interferometric follow-u ...
... Organisation: Cardiff University Title: Observational review Abstract: The past few years have seen a great deal of spectacular large-scale surveys of star-forming regions across the Galaxy with unprecedented sensitivity and angular resolution. Combined with state-of-the-art interferometric follow-u ...
Rock of Eternity: The Megalith of Pallikonda
... sandy-loamy soil. The distribution pattern of these sites also coincides with high rainfall zones where the average annual precipitation is 60–150 cm. Both the factors point to a common conclusion that megalith builders knew farming and were constructing the megaliths near their farming lands. In th ...
... sandy-loamy soil. The distribution pattern of these sites also coincides with high rainfall zones where the average annual precipitation is 60–150 cm. Both the factors point to a common conclusion that megalith builders knew farming and were constructing the megaliths near their farming lands. In th ...
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 ...