Complex Processes in Simple Ices
... for carbon monoxide, which is not dissociated by the UV rays, as for carbon dioxide, which is. Water and methanol ice are also efficiently UV evaporated (Chapter 9–10). With all major ice species having such high evaporation efficiencies, UV evaporation can explain previously puzzling observation of ...
... for carbon monoxide, which is not dissociated by the UV rays, as for carbon dioxide, which is. Water and methanol ice are also efficiently UV evaporated (Chapter 9–10). With all major ice species having such high evaporation efficiencies, UV evaporation can explain previously puzzling observation of ...
The initial conditions: Orion GMC
... • +) McKee (1989): far-UV radiation penetrates up to Av = 4, keeping trace elements ionized (t_AD > t_Univ.). In Ophiuchus, cores don’t exist where Av < 7 (Johnstone et al. 2004 for Ophiuchus) • -) the time-scale for core formation is too long by 1 order of magnitude in comparison with the statisti ...
... • +) McKee (1989): far-UV radiation penetrates up to Av = 4, keeping trace elements ionized (t_AD > t_Univ.). In Ophiuchus, cores don’t exist where Av < 7 (Johnstone et al. 2004 for Ophiuchus) • -) the time-scale for core formation is too long by 1 order of magnitude in comparison with the statisti ...
PDF file
... We DON'T see Jupiter-sized objects near 5 AU Why? Because their orbital periods are >10 years and we have only been doing this this long. ...
... We DON'T see Jupiter-sized objects near 5 AU Why? Because their orbital periods are >10 years and we have only been doing this this long. ...
Permittivity and transmission of metals
... with two reflecting surfaces. Its transmission spectrum as a function of wavelength shows peaks of large transmission corresponding to resonance of the etalon. Interference between the multiple reflections of light between the two reflecting surfaces is the reason for the varying transmission functi ...
... with two reflecting surfaces. Its transmission spectrum as a function of wavelength shows peaks of large transmission corresponding to resonance of the etalon. Interference between the multiple reflections of light between the two reflecting surfaces is the reason for the varying transmission functi ...
of the Physical and Technical Faculty
... know the basic principles of image formation according to geometrical optics have awareness of the wave processes and phenomena in the interaction of electromagnetic waves with materials know of methods of generation, detection and operation of light beams be able to analyze experimental dat ...
... know the basic principles of image formation according to geometrical optics have awareness of the wave processes and phenomena in the interaction of electromagnetic waves with materials know of methods of generation, detection and operation of light beams be able to analyze experimental dat ...
Photometry of star clusters with SalsaJ - Eu-Hou
... star or galaxy by adding up all of the light from the object. For example, a star looks like a point of light when you look at it just with your eyes but the Earth’s atmosphere smears it out into something that looks like a round blob when you use a telescope to look at it. In order to measure the t ...
... star or galaxy by adding up all of the light from the object. For example, a star looks like a point of light when you look at it just with your eyes but the Earth’s atmosphere smears it out into something that looks like a round blob when you use a telescope to look at it. In order to measure the t ...
Kerr - ICRANet
... Jerzy Plebansky, a very well-known Polish relativist visits Austin for Christmas. Alfred Schild holds one of his excellent parties for Jerzy. During this I hear them mention their interest in spaces of the Kerr-Schild form (that name had not been invented at that time, of course). ...
... Jerzy Plebansky, a very well-known Polish relativist visits Austin for Christmas. Alfred Schild holds one of his excellent parties for Jerzy. During this I hear them mention their interest in spaces of the Kerr-Schild form (that name had not been invented at that time, of course). ...
Direct evidence of dust growth in L183 from mid
... Sect. 4.2) visible in emission at 3.6 and 4.5 μm and in absorption at 8 μm. The spatial structure resembles well the shape of the densest region of the cloud complex visible in the AV map presented in Paper I. The 5.8 μm image shows horizontal stripes and a strong vertical gradient in signal-to-nois ...
... Sect. 4.2) visible in emission at 3.6 and 4.5 μm and in absorption at 8 μm. The spatial structure resembles well the shape of the densest region of the cloud complex visible in the AV map presented in Paper I. The 5.8 μm image shows horizontal stripes and a strong vertical gradient in signal-to-nois ...
HP Unit 11-light & optics - student handout
... organs that form images in the brain of the thermal environment, much like vision occurs in the human brain. Thus, these snakes "see" heat, and this amazing system is the most sensitive infrared detector on Earth, natural or artificial. ...
... organs that form images in the brain of the thermal environment, much like vision occurs in the human brain. Thus, these snakes "see" heat, and this amazing system is the most sensitive infrared detector on Earth, natural or artificial. ...
Physics 476LW Advanced Physics Laboratory Polarization
... reflectance, R (=r2) versus θ and compare this with the Fresnel equation for reflected light for s-polarized light. You will now repeat these measurements for p-polarized light. To make p-polarized light, rotate the polarizer so that it is at ~ 45o. Place the second polarizer immediately after the ...
... reflectance, R (=r2) versus θ and compare this with the Fresnel equation for reflected light for s-polarized light. You will now repeat these measurements for p-polarized light. To make p-polarized light, rotate the polarizer so that it is at ~ 45o. Place the second polarizer immediately after the ...
L7-Potentials-orbits
... the center with density decreasing at larger radii. One potential with these properties: where b is characteristic radius that defines how the density decreases with r Density pair given in BT (2-34) and yields ...
... the center with density decreasing at larger radii. One potential with these properties: where b is characteristic radius that defines how the density decreases with r Density pair given in BT (2-34) and yields ...
the reflector - Peterborough Astronomical Association
... and touching to stretch across the with of one atom. The Nucleus also contains most of the mass of an atom. Around each nucleus is one or more electrons, which have hardly any mass, and they are arranged in layers around the nucleus making electron shells. When two atoms meet, the outermost electron ...
... and touching to stretch across the with of one atom. The Nucleus also contains most of the mass of an atom. Around each nucleus is one or more electrons, which have hardly any mass, and they are arranged in layers around the nucleus making electron shells. When two atoms meet, the outermost electron ...
Life (Briefly) Near a Supernova
... save at least a few humans before the sun explodes, only to have a landing party become stranded themselves. Their ship takes shelter in the Earth's shadow, using the Moon as a warning beacon and trusting in the ship's ability to surpass light speed before exiting the Earth's shadow cone. The last v ...
... save at least a few humans before the sun explodes, only to have a landing party become stranded themselves. Their ship takes shelter in the Earth's shadow, using the Moon as a warning beacon and trusting in the ship's ability to surpass light speed before exiting the Earth's shadow cone. The last v ...
Surface-plasmon-polariton-induced suppressed
... It is well known that a high proportion of light can be transmitted using an ultrathin metal film whose thickness is comparable to its optical penetration depth. When the film is periodically modulated by subwavelength apertures, one intuitively expects that the ultrathin film could transmit even mo ...
... It is well known that a high proportion of light can be transmitted using an ultrathin metal film whose thickness is comparable to its optical penetration depth. When the film is periodically modulated by subwavelength apertures, one intuitively expects that the ultrathin film could transmit even mo ...
Molecular Spectroscopy
... 200 cm−1 < ν̄ < 4000 cm−1 . Tungsten filaments is used in the visible and near infrared spectral range 320 nm < λ < 2500 nm. Different types of gas discharge lamps are common light sources in ultraviolet and visible spectral region 180 nm < λ < 800 nm. In a xenon discharge lamp an electrical dischar ...
... 200 cm−1 < ν̄ < 4000 cm−1 . Tungsten filaments is used in the visible and near infrared spectral range 320 nm < λ < 2500 nm. Different types of gas discharge lamps are common light sources in ultraviolet and visible spectral region 180 nm < λ < 800 nm. In a xenon discharge lamp an electrical dischar ...
Carbon Enhanced Stars in the Sloan Digital Sky Survey ( SDSS )
... revealed for the first time an unexpectedly large number ...
... revealed for the first time an unexpectedly large number ...
Potassium abundances in nearby metal-poor stars
... and the microturbulence velocities are estimated by demanding that the iron abundance derived from Fe lines should not depend on equivalent widths. The uncertainties for the temperature, surface gravity, metal abundance and microturbulence velocity for most of the stars are assumed to be ±80 K, 0 ...
... and the microturbulence velocities are estimated by demanding that the iron abundance derived from Fe lines should not depend on equivalent widths. The uncertainties for the temperature, surface gravity, metal abundance and microturbulence velocity for most of the stars are assumed to be ±80 K, 0 ...
A STEP Expected Yield of Planets
... - To know how precise a wide-field differential-photometry survey could be at Dome C - To qualify the site for this kind of survey with a simple instrument We thus focus on following a single stellar field during all winter for first campaign ~1.5 planets for a 90 days survey ...
... - To know how precise a wide-field differential-photometry survey could be at Dome C - To qualify the site for this kind of survey with a simple instrument We thus focus on following a single stellar field during all winter for first campaign ~1.5 planets for a 90 days survey ...
Optics - Haiku
... substituting θ = 90° into the equation. Given that sin90° = 1: n = d / λ, rounded down the nearest whole number. ...
... substituting θ = 90° into the equation. Given that sin90° = 1: n = d / λ, rounded down the nearest whole number. ...
PHYS3380_111615_bw - The University of Texas at Dallas
... Spectrum is power law from hard X-rays to the IR Suggestive of synchrotron radiation: ...
... Spectrum is power law from hard X-rays to the IR Suggestive of synchrotron radiation: ...
Climate as a Result of the Earth Heat Reflection
... The first two – symmetrical and anti-symmetrical deformations of the bonds between hydrogen and oxygen atoms – cause oscillations. The third one is variation in the angle between the bonds (being 104.5o at rest) followed by rotation [4]. In fact, the molecules in mutual collisions have indefinite mo ...
... The first two – symmetrical and anti-symmetrical deformations of the bonds between hydrogen and oxygen atoms – cause oscillations. The third one is variation in the angle between the bonds (being 104.5o at rest) followed by rotation [4]. In fact, the molecules in mutual collisions have indefinite mo ...
here - The Planetary Chemistry Laboratory
... TRY THESE FOR ABUNDANCES of non-volatile elements Many types of chondrites contain round silicate spheres called chondrules Chondrite groups: Ordinary chondrites: H, L, LL ...
... TRY THESE FOR ABUNDANCES of non-volatile elements Many types of chondrites contain round silicate spheres called chondrules Chondrite groups: Ordinary chondrites: H, L, LL ...
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.