The life-cycle of star formation in distant clusters
... The BC models assume a given initial stellar mass function (IMF) and star formation history and output, as a function of time, observables such as spectral energy distributions (SEDs), absolute magnitudes and colours. We adopt the Scalo IMF with lower and upper mass cut-offs of 0.1 and 125 M G , res ...
... The BC models assume a given initial stellar mass function (IMF) and star formation history and output, as a function of time, observables such as spectral energy distributions (SEDs), absolute magnitudes and colours. We adopt the Scalo IMF with lower and upper mass cut-offs of 0.1 and 125 M G , res ...
turcuman s - Revista de Chimie
... CoL2 x 2H2O compounds, it results that in both cases the values of a and c parameters are relatively close though they are much lower than the b value. This shows that the central atoms of Fe(III) and Co(II) coordinates with H2O respectively in the ac plan of the elemental cell towards b side accomp ...
... CoL2 x 2H2O compounds, it results that in both cases the values of a and c parameters are relatively close though they are much lower than the b value. This shows that the central atoms of Fe(III) and Co(II) coordinates with H2O respectively in the ac plan of the elemental cell towards b side accomp ...
Holographic Metalens for Switchable Focusing of Surface Plasmons
... following the design depicted in Figure 1, we use focused ion beam (FIB) milling to etch the nanoslits into the gold film (Figure 1c). The sample is illuminated from below with linearly polarized light (Figure 2). The illuminating beam is at normal incidence and focused (beam waist of ∼10 μm) on the ...
... following the design depicted in Figure 1, we use focused ion beam (FIB) milling to etch the nanoslits into the gold film (Figure 1c). The sample is illuminated from below with linearly polarized light (Figure 2). The illuminating beam is at normal incidence and focused (beam waist of ∼10 μm) on the ...
Vastness - Monday Munchees
... team of 42 scientists just completed a six-year survey of 100 million stars in the Milky Way galaxy using a variety of sophisticated planetdetection techniques. Their conclusion: Most stars have multiple planets, and two thirds of them probably have a planet roughly the size of Earth. “One can point ...
... team of 42 scientists just completed a six-year survey of 100 million stars in the Milky Way galaxy using a variety of sophisticated planetdetection techniques. Their conclusion: Most stars have multiple planets, and two thirds of them probably have a planet roughly the size of Earth. “One can point ...
OLIMPO
... • For each cluster, applying deprojection algorithms to the SZ and X images (see eg Zaroubi et al. 1999), and assuming hydrostatic equilibrium, it is possible to derive the gas profile and the total (including dark) mass of the cluster. • The presence of 4 channels (and especially the 1.3 mm one) is ...
... • For each cluster, applying deprojection algorithms to the SZ and X images (see eg Zaroubi et al. 1999), and assuming hydrostatic equilibrium, it is possible to derive the gas profile and the total (including dark) mass of the cluster. • The presence of 4 channels (and especially the 1.3 mm one) is ...
Measurement of the Wavelength of Light
... In this work, the diffraction of a laser beam from a ruled grating was used to determine the wavelength of the laser light. The wavelength was determined from the diffraction angles for several orders of diffraction, and two methods were used to analyze the data. In Method A, Eq. 3 was used for each ...
... In this work, the diffraction of a laser beam from a ruled grating was used to determine the wavelength of the laser light. The wavelength was determined from the diffraction angles for several orders of diffraction, and two methods were used to analyze the data. In Method A, Eq. 3 was used for each ...
42 SCIENTIFIC AMERICAN OCTOBER 2006 TEN
... most 60 processor-years. The computa- ing it— a process known as detonation. tional tricks that simplify simulations in Thermonuclear flames can spread in the other areas of science do not apply to same two ways. Detonation, being the supernovae, which involve highly asym- more violent, would incine ...
... most 60 processor-years. The computa- ing it— a process known as detonation. tional tricks that simplify simulations in Thermonuclear flames can spread in the other areas of science do not apply to same two ways. Detonation, being the supernovae, which involve highly asym- more violent, would incine ...
Waves
... in Hz, λ is the wavelength in m. Because f = 1/T, this is also equivalent to v = λ /T (or speed = distance / time) A transverse wave is one in which the displacement is at 90° to the direction of travel. All electromagnetic waves are transverse and can travel in a vacuum. ...
... in Hz, λ is the wavelength in m. Because f = 1/T, this is also equivalent to v = λ /T (or speed = distance / time) A transverse wave is one in which the displacement is at 90° to the direction of travel. All electromagnetic waves are transverse and can travel in a vacuum. ...
Document
... central T rises to ignite “triple-” reaction 3 He4 --> C12 Which stars can ignite He? If they cannot, what happens during the contraction phase? The stellar mass determines if there is sufficient contraction (and thus heating) to ignite further nuclear reactions or if matter becomes degenerate (at ...
... central T rises to ignite “triple-” reaction 3 He4 --> C12 Which stars can ignite He? If they cannot, what happens during the contraction phase? The stellar mass determines if there is sufficient contraction (and thus heating) to ignite further nuclear reactions or if matter becomes degenerate (at ...
Document
... or RJ ~ GmHM/3kT Cloud fragments & collapses if M>MJ, R>RJ Free-fall time = (3/32Go)1/2 for T~150K, n~108/cm3, ~2x10-16 g/cm3 ...
... or RJ ~ GmHM/3kT Cloud fragments & collapses if M>MJ, R>RJ Free-fall time = (3/32Go)1/2 for T~150K, n~108/cm3, ~2x10-16 g/cm3 ...
WDM Concepts and Components
... filter in the lasing cavity • Wavelength is tuned by either changing the temperature of the grating (0.1 nm/OC) • Or by altering the injection current into the passive section (0.006 nm/mA) • The tuning range decreases with the optical output power ...
... filter in the lasing cavity • Wavelength is tuned by either changing the temperature of the grating (0.1 nm/OC) • Or by altering the injection current into the passive section (0.006 nm/mA) • The tuning range decreases with the optical output power ...
Deep $ I $-band imaging of $ z=\ mathsf {5.99} $ quasar
... emission produced close to the central black hole is related intimately to the processes in the central engine and therefore offers the possibility to probe directly the processes occurring in the quasar nuclei. Recently, Brandt et al. (2002) carried out a Chandra survey of the quasars with highest ...
... emission produced close to the central black hole is related intimately to the processes in the central engine and therefore offers the possibility to probe directly the processes occurring in the quasar nuclei. Recently, Brandt et al. (2002) carried out a Chandra survey of the quasars with highest ...
E g
... •Pick 2 points on the left and 2 points on the right shoulders of the peak •Fit this 4 points with parabola •Subtract the parabola from the experimental curve •You get the unshifted position of the lowest exciton absorption peak •Find the wavelength, corresponding to the maximum position •Calculate ...
... •Pick 2 points on the left and 2 points on the right shoulders of the peak •Fit this 4 points with parabola •Subtract the parabola from the experimental curve •You get the unshifted position of the lowest exciton absorption peak •Find the wavelength, corresponding to the maximum position •Calculate ...
What is light?
... Radio: Yes, this is the same kind of energy that radio stations emit into the air for your stereo to capture and turn into your favorite tunes. But radio waves are also emitted by other things…such as stars and gases in space. You may not be able to dance to what these objects emit, but you can use ...
... Radio: Yes, this is the same kind of energy that radio stations emit into the air for your stereo to capture and turn into your favorite tunes. But radio waves are also emitted by other things…such as stars and gases in space. You may not be able to dance to what these objects emit, but you can use ...
Use of Broadband, Continuous-Wave Diode Lasers in Cavity Ring
... separated the rst-order modulated beam (approximately 5 mW ) with an iris and directed this beam into the optical cavity. The m aximum switching rate is determined not by the AOM controller but rather by the amount of time needed for intensity to build up in the cavity and then ring down for each ...
... separated the rst-order modulated beam (approximately 5 mW ) with an iris and directed this beam into the optical cavity. The m aximum switching rate is determined not by the AOM controller but rather by the amount of time needed for intensity to build up in the cavity and then ring down for each ...
Optical Telescopes
... This occasion is now almost forgotten, because no inventions were made but a Dutchman. His device was not used for astronomical purposes, and it found its application in military use. The event, which remains in people memories, is the Galilean invention of his first telescope in 1609. The first Gal ...
... This occasion is now almost forgotten, because no inventions were made but a Dutchman. His device was not used for astronomical purposes, and it found its application in military use. The event, which remains in people memories, is the Galilean invention of his first telescope in 1609. The first Gal ...
A near IR adaptive optics search for faint companions to early
... We suspect that it is a highly reddened (J − K = 2.4) background star. In this region of sky there are other multiple systems with similar proper motions and radial velocities (e.g. HR 3283, 3322, 3359). Therefore, NO Pup belongs to an association. HD 108248/49/50 = α1,2 Cru. The coronographic image ...
... We suspect that it is a highly reddened (J − K = 2.4) background star. In this region of sky there are other multiple systems with similar proper motions and radial velocities (e.g. HR 3283, 3322, 3359). Therefore, NO Pup belongs to an association. HD 108248/49/50 = α1,2 Cru. The coronographic image ...
The Mass of Quasar Broad Emission Line Regions
... the ratio of radiation to gas pressures, and nH, 10 is the density of hydrogen in units of 1010 cm3. A cursory reading of these texts would leave the impression that MBLR is anywhere from 2 to 2000 M. However, there are different choices of luminosity and density (and also of other parameters) buri ...
... the ratio of radiation to gas pressures, and nH, 10 is the density of hydrogen in units of 1010 cm3. A cursory reading of these texts would leave the impression that MBLR is anywhere from 2 to 2000 M. However, there are different choices of luminosity and density (and also of other parameters) buri ...
Stars
... https://www.brainpop.com/science/space/asteroids/ https://www.youtube.com/watch?v=SKPjlX_1eio https://www.youtube.com/watch?v=v-DmkH7udc4 https://www.youtube.com/watch?v=sUnDwn0fN3g only look ...
... https://www.brainpop.com/science/space/asteroids/ https://www.youtube.com/watch?v=SKPjlX_1eio https://www.youtube.com/watch?v=v-DmkH7udc4 https://www.youtube.com/watch?v=sUnDwn0fN3g only look ...
Correlated diffraction and fluorescence in the backscattering
... regions. Their coloration is showy, with very contrasting shades of green, yellow, orange, black, and white. Blue and orange, and almost completely black species are also known. Except in a few species, such as Ornithoptera paradisea, the hindwings lack tails on their hindwings. The sexual dimorphis ...
... regions. Their coloration is showy, with very contrasting shades of green, yellow, orange, black, and white. Blue and orange, and almost completely black species are also known. Except in a few species, such as Ornithoptera paradisea, the hindwings lack tails on their hindwings. The sexual dimorphis ...
Constellations
... that poets, farmers, sailors, and astronomers have made up over the past 6,000 years The real purpose for the constellations is to help us tell which stars are which. On a really dark night, you can see about 1000 to 1500 stars. The constellations help by breaking up the sky into more manageable bit ...
... that poets, farmers, sailors, and astronomers have made up over the past 6,000 years The real purpose for the constellations is to help us tell which stars are which. On a really dark night, you can see about 1000 to 1500 stars. The constellations help by breaking up the sky into more manageable bit ...
jbrown_keck - Astronomy at Swarthmore College
... then calculates the amount of UV light from the interstellar UV radiation field reaching the parent molecules. The surface of the AGB star is cool so the star itself does not emit UV light. The UV light creates radicals, which are highly reactive and form new molecules. The program iterates outwards ...
... then calculates the amount of UV light from the interstellar UV radiation field reaching the parent molecules. The surface of the AGB star is cool so the star itself does not emit UV light. The UV light creates radicals, which are highly reactive and form new molecules. The program iterates outwards ...
This is the Title - Astronomy at Swarthmore College
... then calculates the amount of UV light from the interstellar UV radiation field reaching the parent molecules. The surface of the AGB star is cool so the star itself does not emit UV light. The UV light creates radicals, which are highly reactive and form new molecules. The program iterates outwards ...
... then calculates the amount of UV light from the interstellar UV radiation field reaching the parent molecules. The surface of the AGB star is cool so the star itself does not emit UV light. The UV light creates radicals, which are highly reactive and form new molecules. The program iterates outwards ...
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.