How much radioactive nickel does ASASSN
... PISN explosions. The grid of models from Heger & Woosley (2002) shows the results of the simulation of non-rotating zero-metallicity models in the helium-core mass range between 65 M⊙ and 135 M⊙. The initial corresponding mainsequence star mass ranges from 140 M⊙ to 260 M⊙. However, the evolutionary ...
... PISN explosions. The grid of models from Heger & Woosley (2002) shows the results of the simulation of non-rotating zero-metallicity models in the helium-core mass range between 65 M⊙ and 135 M⊙. The initial corresponding mainsequence star mass ranges from 140 M⊙ to 260 M⊙. However, the evolutionary ...
A study of the structure and bonding of small aluminum oxide
... For the Al2Oy clusters, both Al2O and Al2O2 were observed by mass spectrometry in the vapor above Al2O3 .56 More recent studies have also used mass spectrometry to characterize aluminum oxide clusters.57 Various matrix isolation experiments, on species formed by the reaction of aluminum with oxygen ...
... For the Al2Oy clusters, both Al2O and Al2O2 were observed by mass spectrometry in the vapor above Al2O3 .56 More recent studies have also used mass spectrometry to characterize aluminum oxide clusters.57 Various matrix isolation experiments, on species formed by the reaction of aluminum with oxygen ...
Life on Other Worlds
... may throw them away upon such subjects as this; but I suppose they who can spend their time better, will not be at so vain and fruitless an expence." (John Glanvill's translation of 1688.) The question whether life exists on other worlds is one that still excites curiosity, and to which astronomers ...
... may throw them away upon such subjects as this; but I suppose they who can spend their time better, will not be at so vain and fruitless an expence." (John Glanvill's translation of 1688.) The question whether life exists on other worlds is one that still excites curiosity, and to which astronomers ...
2003
... images are taken along the weak axis of the trap. The field of view of each image is 3.0 mm x 0.7 mm. ...
... images are taken along the weak axis of the trap. The field of view of each image is 3.0 mm x 0.7 mm. ...
Electrons in Atoms CHAPTER
... Figure 5-1b, also is a gas. Argon, however, is so unreactive that it is considered a noble gas. Potassium is a reactive metal at room temperature. In fact, as you can see in Figure 5-1c, because potassium is so reactive, it must be stored under kerosene or oil to prevent its atoms from reacting with ...
... Figure 5-1b, also is a gas. Argon, however, is so unreactive that it is considered a noble gas. Potassium is a reactive metal at room temperature. In fact, as you can see in Figure 5-1c, because potassium is so reactive, it must be stored under kerosene or oil to prevent its atoms from reacting with ...
PDF - STRW Local - Universiteit Leiden
... While the haloes of dark matter that are thought to host galaxies can be simulated accurately almost from first principles, this is not the case for the galaxies themselves, which consist mostly of baryonic (i.e. ordinary) matter. The difficulties stem from three problems. First, not only gravity, b ...
... While the haloes of dark matter that are thought to host galaxies can be simulated accurately almost from first principles, this is not the case for the galaxies themselves, which consist mostly of baryonic (i.e. ordinary) matter. The difficulties stem from three problems. First, not only gravity, b ...
attached file
... invented the cosmological constant as a term in his General Relativity theory that allowed for a static universe. In 1929, Edwin Hubble announced that his observations of galaxies outside our own Milky Way showed that they were systematically moving away from us with a speed that was proportional to ...
... invented the cosmological constant as a term in his General Relativity theory that allowed for a static universe. In 1929, Edwin Hubble announced that his observations of galaxies outside our own Milky Way showed that they were systematically moving away from us with a speed that was proportional to ...
JUL 12 ARCHNES LIBRARIES
... weren't. They lay far beyond the reaches of the Milky Way, blazing from the distant past, when the universe was only a few billion years old. But while these sources were far enough away to look like pinpricks on the sky, their light was very different from starlight: it came not from a single orb b ...
... weren't. They lay far beyond the reaches of the Milky Way, blazing from the distant past, when the universe was only a few billion years old. But while these sources were far enough away to look like pinpricks on the sky, their light was very different from starlight: it came not from a single orb b ...
R585 EXPLORERS OF THE SOUTHERN SKY
... This well-illustrated volume is the most conprehensive account of Australian astronomy to date. It is both an indispensabel reference book on the history of astronomy in Australia and a highly readable study of a scientific discipline in the context of emerging nationhood. It covers not only the sci ...
... This well-illustrated volume is the most conprehensive account of Australian astronomy to date. It is both an indispensabel reference book on the history of astronomy in Australia and a highly readable study of a scientific discipline in the context of emerging nationhood. It covers not only the sci ...
ON THE POLAR CAPS OF THE THREE MUSKETEERS1
... Finley 1993). The timing analysis unveiled the source pulsation, with a pulsed fraction increasing from 11% for energies <0.5 keV to 63% above 0.5 keV. The spectrum was best described by a two-component model. A blackbody with temperature of 8 ; 105 K, coming from a large portion of the surface, ...
... Finley 1993). The timing analysis unveiled the source pulsation, with a pulsed fraction increasing from 11% for energies <0.5 keV to 63% above 0.5 keV. The spectrum was best described by a two-component model. A blackbody with temperature of 8 ; 105 K, coming from a large portion of the surface, ...
StellarManual
... Students should determine how this may or may not differ from how an astronomer might relate a certain temperature range and colors. Answer: An object acting like a blackbody radiator (like a star) will emit more light towards the blue end of the visible spectrum when at a higher temperature, and wi ...
... Students should determine how this may or may not differ from how an astronomer might relate a certain temperature range and colors. Answer: An object acting like a blackbody radiator (like a star) will emit more light towards the blue end of the visible spectrum when at a higher temperature, and wi ...
All About Elements
... in the universe. Only Hydrogen is more abundant! These two elements were copiously formed during the creation of the universe. In the early stages of the universe, helium and hydrogen nuclei were actually formed. No atoms were formed until about 300,000 years after the Big Bang took place, when the ...
... in the universe. Only Hydrogen is more abundant! These two elements were copiously formed during the creation of the universe. In the early stages of the universe, helium and hydrogen nuclei were actually formed. No atoms were formed until about 300,000 years after the Big Bang took place, when the ...
PDF
... experiments, but then thought of something new: The Kepler spacecraft in its search for extra-‐solar planets might be far better than any of the ground-‐based microlensing searches We were surprised ...
... experiments, but then thought of something new: The Kepler spacecraft in its search for extra-‐solar planets might be far better than any of the ground-‐based microlensing searches We were surprised ...
The Static Universe of Walther Nernst
... which saw an unchanging, infinite whole behind the finite local systems. Diverging from this great line of thought, which dates from Hegel back to antiquity, the Aristotelian-Ptolemaic worldview, which dominated until the Enlightenment, held that the cosmos was unchanging. Since the heat death conce ...
... which saw an unchanging, infinite whole behind the finite local systems. Diverging from this great line of thought, which dates from Hegel back to antiquity, the Aristotelian-Ptolemaic worldview, which dominated until the Enlightenment, held that the cosmos was unchanging. Since the heat death conce ...
Proteins in High Electric Fields - BYU ScholarsArchive
... when combined with a luciferin or luciferin-like substrate, but the substrate is engineered to emit light over a longer period of time. The electromagnetic energy emitted by luciferase covers a couple hundred nanometer spectrum in the visible light spectrum [10]. Increasing the temperature causes a ...
... when combined with a luciferin or luciferin-like substrate, but the substrate is engineered to emit light over a longer period of time. The electromagnetic energy emitted by luciferase covers a couple hundred nanometer spectrum in the visible light spectrum [10]. Increasing the temperature causes a ...
HAT-P-13b,c: A TRANSITING HOT JUPITER WITH
... a planet transiting a star is the CfA Digital Speedometer (DS; Latham 1992), mounted on the FLWO 1.5 m telescope. This yields high-resolution spectra with low signal-to-noise ratio sufficient to derive radial velocities with moderate precision (roughly 1 km s−1 ), and to determine the effective temp ...
... a planet transiting a star is the CfA Digital Speedometer (DS; Latham 1992), mounted on the FLWO 1.5 m telescope. This yields high-resolution spectra with low signal-to-noise ratio sufficient to derive radial velocities with moderate precision (roughly 1 km s−1 ), and to determine the effective temp ...
Structure-Related Optical Fingerprints in the Absorption Spectra of
... usually complicated and nonlinear combination of the material properties of their constituents. As an example, it is possible to vary the stoichiometry of few-nanometer sized (Cd,Zn)(Se,S) alloyed QDs to shift the optical gap over the visible spectral range.1 To make the distinction between a random ...
... usually complicated and nonlinear combination of the material properties of their constituents. As an example, it is possible to vary the stoichiometry of few-nanometer sized (Cd,Zn)(Se,S) alloyed QDs to shift the optical gap over the visible spectral range.1 To make the distinction between a random ...
Comets
... collapsed to form the Sun and planets about 4.6 billion years ago. The most widely-accepted hypothesis of its formation is that the Oort cloud’s objects initially formed much closer to the Sun as part of the same process that formed the planets and asteroids, but the gravitational interaction with t ...
... collapsed to form the Sun and planets about 4.6 billion years ago. The most widely-accepted hypothesis of its formation is that the Oort cloud’s objects initially formed much closer to the Sun as part of the same process that formed the planets and asteroids, but the gravitational interaction with t ...
Multiwavelength observations of XTE J1118+480`s outburst
... Comparison with USNO B1.0 plate R band: only one of the two sources varied in the XMM EPIC 4” uncertainty circle. ...
... Comparison with USNO B1.0 plate R band: only one of the two sources varied in the XMM EPIC 4” uncertainty circle. ...
Investigating the Wavelength Dependency of Dot Gain in Color Print
... In this study, 21 patches with different coverage of cyan, magenta, yellow, and black have been printed. All the patches are halftoned by AM (150 lpi, 1200 dpi) and printed by commercial offset press (Heidelberg) on coated paper (150 gr/m2 ). The reference dot area coverage of the patches are (0, 5, ...
... In this study, 21 patches with different coverage of cyan, magenta, yellow, and black have been printed. All the patches are halftoned by AM (150 lpi, 1200 dpi) and printed by commercial offset press (Heidelberg) on coated paper (150 gr/m2 ). The reference dot area coverage of the patches are (0, 5, ...
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.