2017 Maryland Regional
... Use the space below to continue any answers that do not fit on the lines given: ...
... Use the space below to continue any answers that do not fit on the lines given: ...
THE YELLOW SUPERGIANT PROGENITOR OF THE TYPE II
... sources completely blended with Source A in the WFPC2 WF2 images). There is no evidence for variability in the brightness of Source A before explosion. At the adopted distance to M51, after correction for foreground reddening, this implies MF 555W = −7.54 ± 0.37. In this region of M51 (for which we ...
... sources completely blended with Source A in the WFPC2 WF2 images). There is no evidence for variability in the brightness of Source A before explosion. At the adopted distance to M51, after correction for foreground reddening, this implies MF 555W = −7.54 ± 0.37. In this region of M51 (for which we ...
Planet formation around M-dwarfs: the moving snow line and super
... migration, where the object is torqued by density waves excited in the gas disk (e.g. Tanaka et al. 2002). Type I migration timescales are typically very short—of the order 104 yr for the Jovian core. Icy protoplanets in general may suffer similar problems. However, the extremely short timescale has ...
... migration, where the object is torqued by density waves excited in the gas disk (e.g. Tanaka et al. 2002). Type I migration timescales are typically very short—of the order 104 yr for the Jovian core. Icy protoplanets in general may suffer similar problems. However, the extremely short timescale has ...
DIPLOMA THESIS Spectroscopic study of the star 70 Virginis and its
... around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, (c) has not cleared the neighbourhood around its orbit, and (d) is not a satellite. (3) All other objects except satellites orbiting the Sun s ...
... around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, (c) has not cleared the neighbourhood around its orbit, and (d) is not a satellite. (3) All other objects except satellites orbiting the Sun s ...
Winter 2008 exam 1 - BYU Physics and Astronomy
... 1. T or F: The real part of the refractive index cannot be less than one. 2. T or F: s-polarized and p-polarized light experience different phase shifts upon reflection from a material with a complex index of refraction. 3. T or F: When light is incident upon a material interface at Brewster’s angle ...
... 1. T or F: The real part of the refractive index cannot be less than one. 2. T or F: s-polarized and p-polarized light experience different phase shifts upon reflection from a material with a complex index of refraction. 3. T or F: When light is incident upon a material interface at Brewster’s angle ...
Origin of the long-term modulation of radio emission of LS I +61°303
... The known long-term variability in Be stars is that of the violetto-red cycles (V/R variations) in which the two peaks of the emission lines vary in height against each other. The variations correspond to an evolution of the disc itself where the disc undergoes a global one-armed oscillation instabi ...
... The known long-term variability in Be stars is that of the violetto-red cycles (V/R variations) in which the two peaks of the emission lines vary in height against each other. The variations correspond to an evolution of the disc itself where the disc undergoes a global one-armed oscillation instabi ...
205 Advances in Natural and Applied Sciences, 4(2): 205-209, 2010 ISSN 1995-0772
... neutron star or a black hole formed after collapse of an ordinary star) and a stellar companion, orbit each other at a distance small enough to enable mass transfer from the companion star to the compact object. The transferred matter spirals towards the compact object and forms an “accretion disk” ...
... neutron star or a black hole formed after collapse of an ordinary star) and a stellar companion, orbit each other at a distance small enough to enable mass transfer from the companion star to the compact object. The transferred matter spirals towards the compact object and forms an “accretion disk” ...
Our Universe—Infinite and Eternal: Its Physics
... The first part of the book deals with the foundations and nature of physics. It will be shown that underlying basic physical laws of Newton are likely the result of the distribution of matter within our Universe and the gravitational force between matter. In the first chapter of the book, the field equ ...
... The first part of the book deals with the foundations and nature of physics. It will be shown that underlying basic physical laws of Newton are likely the result of the distribution of matter within our Universe and the gravitational force between matter. In the first chapter of the book, the field equ ...
6 Basics of Optical Spectroscopy
... Absorption measurements of the rotational transitions necessitates the existence of a permanent dipole moment. Molecules that have no permanent dipole moment, but rather an anisotropic polarizability perpendicular to the axis of rotation, can be measured with Raman scattering. Although rotational sp ...
... Absorption measurements of the rotational transitions necessitates the existence of a permanent dipole moment. Molecules that have no permanent dipole moment, but rather an anisotropic polarizability perpendicular to the axis of rotation, can be measured with Raman scattering. Although rotational sp ...
SPACE CAMP
... Thursday, April 17, 7 p.m., Wilson Hall Auditorium Dr. Scott Ransom, National Radio Astronomy Observatory The biggest stars burn the fastest and brightest, and when they die, they do so spectacularly, exploding as supernovae and leaving behind some of the most fantastic objects in the uni verse: ne ...
... Thursday, April 17, 7 p.m., Wilson Hall Auditorium Dr. Scott Ransom, National Radio Astronomy Observatory The biggest stars burn the fastest and brightest, and when they die, they do so spectacularly, exploding as supernovae and leaving behind some of the most fantastic objects in the uni verse: ne ...
The age structure of the Milky Way`s halo
... and the Gaia-ESO Survey3 (GES), as well as previous dedicated searches for chemically-primitive stars by the HK Survey4,5 and Hamburg/ESO Survey6. The moderate- to high-resolution spectroscopy from such surveys provides the basic data, such as stellar atmospheric parameters (effective temperature, s ...
... and the Gaia-ESO Survey3 (GES), as well as previous dedicated searches for chemically-primitive stars by the HK Survey4,5 and Hamburg/ESO Survey6. The moderate- to high-resolution spectroscopy from such surveys provides the basic data, such as stellar atmospheric parameters (effective temperature, s ...
Matter-Wave Interferometer for Large Molecules
... Interferometry with matter waves has become a large field of interest throughout the past years [1,2]. It represents a powerful tool for the demonstration of basic quantum phenomena and of matter-wave effects as well as for applications in high precision measurements inertial forces [3,4] and fundam ...
... Interferometry with matter waves has become a large field of interest throughout the past years [1,2]. It represents a powerful tool for the demonstration of basic quantum phenomena and of matter-wave effects as well as for applications in high precision measurements inertial forces [3,4] and fundam ...
Stellarium01 Starter Part A B Doc - ASTR101
... What constellation is the moon in on next day? (NOTE: Rather than re-entering the new date information each time, you can simply press the “=” key to advance the sky by one day) ...
... What constellation is the moon in on next day? (NOTE: Rather than re-entering the new date information each time, you can simply press the “=” key to advance the sky by one day) ...
N-body Simulations and Galaxy Formation
... and, later on, Negroponte & White (1983) were among the first who performed self-consistent merger simulations of disk galaxies. However, the resolution of these simulations was very low and the number of particles representing each galaxy did not exceed 500. The situation changed with the advent of ...
... and, later on, Negroponte & White (1983) were among the first who performed self-consistent merger simulations of disk galaxies. However, the resolution of these simulations was very low and the number of particles representing each galaxy did not exceed 500. The situation changed with the advent of ...
Modelling galaxy spectra in presence of interstellar dust – II. From
... Accepted 2006 May 12. Received 2006 March 28; in original form 2005 September 9 ...
... Accepted 2006 May 12. Received 2006 March 28; in original form 2005 September 9 ...
RADIATION SIGNATURES OF SUB
... synchrotron radiation, whose spectrum peaks at ωs ∼ (eB/mc)γ 2 , has an asymptotic ω 1/3 dependence below the peak and falls off exponentially at higher frequencies (it makes a second power-law for an isotropic ensemble of particles having a power-law distribution in energy). This is often true, but ...
... synchrotron radiation, whose spectrum peaks at ωs ∼ (eB/mc)γ 2 , has an asymptotic ω 1/3 dependence below the peak and falls off exponentially at higher frequencies (it makes a second power-law for an isotropic ensemble of particles having a power-law distribution in energy). This is often true, but ...
Here
... High Resolution Spectroscopy • Using a good high resolution spectrum, you can get a much better measurement of the spectral energy distribution. • The disadvantage is that the efficiency is lower (more photons are lost in the complex optics). Also, it is difficult to measure more than one star at a ...
... High Resolution Spectroscopy • Using a good high resolution spectrum, you can get a much better measurement of the spectral energy distribution. • The disadvantage is that the efficiency is lower (more photons are lost in the complex optics). Also, it is difficult to measure more than one star at a ...
Title Goes Here
... effects. In our experiments, as shown in Fig. 3 (a), or Fig. 4 (a), the BGR effect was observed as the red shifts of the band-edge PL peak (BE) with increasing electron density. However, the FES effect in the PLE spectra was negligibly small. No sharp peak, or no power-law singularity, was observed ...
... effects. In our experiments, as shown in Fig. 3 (a), or Fig. 4 (a), the BGR effect was observed as the red shifts of the band-edge PL peak (BE) with increasing electron density. However, the FES effect in the PLE spectra was negligibly small. No sharp peak, or no power-law singularity, was observed ...
P Cygni Profiles of Molecular Lines Toward Arp 220 Nuclei
... of the merger’s superwind at larger scales. A biconical distribution of OH maser around the western nucleus along its rotation axis (i.e., N-S direction) was observed by Rovilos et al. (2003, their Fig. 4). Aalto et al. (2009) suggested that this emission as well as the faint HNC emission they found ...
... of the merger’s superwind at larger scales. A biconical distribution of OH maser around the western nucleus along its rotation axis (i.e., N-S direction) was observed by Rovilos et al. (2003, their Fig. 4). Aalto et al. (2009) suggested that this emission as well as the faint HNC emission they found ...
HOW HIGH ARE PULSAR MOUNTAINS?
... out from their sources at the speed of light. Far away from the source their effect is tiny. The distortions from even the strongest sources (which are some of the most violent events in the Universe) stretch and squeeze the distance between any objects they pass by a fractional amount (called the s ...
... out from their sources at the speed of light. Far away from the source their effect is tiny. The distortions from even the strongest sources (which are some of the most violent events in the Universe) stretch and squeeze the distance between any objects they pass by a fractional amount (called the s ...
The naturalistic for- mation of planets exceedingly diffi
... the process was easy: ‘Our solar system was built from the dust of dead stars. It’s an often-repeated fact.’1 Planet formation is just one of the many hypothetical evolutionary processes that started with the big bang and ended with humans on Earth after many billions of years. Since planets exist ...
... the process was easy: ‘Our solar system was built from the dust of dead stars. It’s an often-repeated fact.’1 Planet formation is just one of the many hypothetical evolutionary processes that started with the big bang and ended with humans on Earth after many billions of years. Since planets exist ...
Module 27: Polarization-II Lecture 27: Polarization-II
... no when E is perpendicular to the x axis. Here the x axis is referred to as the optic axis. The optical properties are the same in all directions perpendicular ~ is along the optic axis. Crystals may to the optic axis and it is different if E have more than one optic axis. Here we only consider a si ...
... no when E is perpendicular to the x axis. Here the x axis is referred to as the optic axis. The optical properties are the same in all directions perpendicular ~ is along the optic axis. Crystals may to the optic axis and it is different if E have more than one optic axis. Here we only consider a si ...
modeling the thermal absorption factor of photovoltaic/thermal combi
... sub-fluxes (q ia1 ,q ia2 ,q ia3 ), as illustrated in figure 4. For a given incident sub-flux each exiting subflux can be found by integrating I(ϕ,θ) over the corresponding part of the hemisphere. Details will not be given here. What is important is that just as in the specular case, all sub-fluxes a ...
... sub-fluxes (q ia1 ,q ia2 ,q ia3 ), as illustrated in figure 4. For a given incident sub-flux each exiting subflux can be found by integrating I(ϕ,θ) over the corresponding part of the hemisphere. Details will not be given here. What is important is that just as in the specular case, all sub-fluxes a ...
I Introduction to the Interstellar Medium
... Astronomy 871 is a survey of the physics of the Interstellar Medium (henceforth ISM) of the Milky Way Galaxy. The emphasis will be on physical processes that prevail in each of the distinct phases of interstellar gas. In the end, you should have a thorough grounding in the basic physical principles ...
... Astronomy 871 is a survey of the physics of the Interstellar Medium (henceforth ISM) of the Milky Way Galaxy. The emphasis will be on physical processes that prevail in each of the distinct phases of interstellar gas. In the end, you should have a thorough grounding in the basic physical principles ...
Astronomical spectroscopy
Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light, which radiates from stars and other hot celestial objects. Spectroscopy can be used to derive many properties of distant stars and galaxies, such as their chemical composition, temperature, density, mass, distance, luminosity, and relative motion using Doppler shift measurements.