Radiative winds, accretion disks and massive stars physics using
... • Ions which provide the radiative acceleration constitute about only 10-5 of all ions by number (since H and He contribute negligibly to the acceleration since fully ionized) so if a typical ion increases its velocity by 20cm/s, the effective increase per absorption is 2x10-3 cm/s. To accelerate th ...
... • Ions which provide the radiative acceleration constitute about only 10-5 of all ions by number (since H and He contribute negligibly to the acceleration since fully ionized) so if a typical ion increases its velocity by 20cm/s, the effective increase per absorption is 2x10-3 cm/s. To accelerate th ...
Astronomical signs of Korean tombs
... tombs and found that the constellations corresponding oriental seven eastern major constellations were painted on the western wall and those of the seven western constellations were painted on the eastern wall. This Goguryeo constellation system made it possible for Sagittarius to be painted on the ...
... tombs and found that the constellations corresponding oriental seven eastern major constellations were painted on the western wall and those of the seven western constellations were painted on the eastern wall. This Goguryeo constellation system made it possible for Sagittarius to be painted on the ...
On the interpretation of stellar disc observations in terms of diameters
... absorption of the type of case A1 of Section 2.1 may lead to a sudden exponential intensity drop through the exp 2tl =cos u factor when cos u gets very close to zero. The (essentially coinciding) positions of these inflection points of monochromatic intensity CLVs define a unique intensity radius ( ...
... absorption of the type of case A1 of Section 2.1 may lead to a sudden exponential intensity drop through the exp 2tl =cos u factor when cos u gets very close to zero. The (essentially coinciding) positions of these inflection points of monochromatic intensity CLVs define a unique intensity radius ( ...
WHITE DWARFS AS A SOURCE OF CONSTRAINTS ON EXOTIC …
... Pioneers: Oort 1923, Zwicky 1925 X-ray emission from clusters ...
... Pioneers: Oort 1923, Zwicky 1925 X-ray emission from clusters ...
Sample pages 1 PDF
... into images of gods, heroes, animals, and everyday objects. All peoples of this world have projected their beliefs onto the sky. Modern astronomers use the constellations from the ancient Greeks, which include not only objects and animals in the sky but also ancient mythological heroes. That is why ...
... into images of gods, heroes, animals, and everyday objects. All peoples of this world have projected their beliefs onto the sky. Modern astronomers use the constellations from the ancient Greeks, which include not only objects and animals in the sky but also ancient mythological heroes. That is why ...
The Chemical Composition of Carbon-Rich, Very Metal
... put forward to account for the moderately metal-poor classical CH stars ([Fe/H]∼ −1.5). These are usually explained by a model involving mass transfer from a carbon-enhanced asymptotic giant branch (AGB) star (one that has since evolved to the white dwarf stage and cannot now be seen) to its lower-m ...
... put forward to account for the moderately metal-poor classical CH stars ([Fe/H]∼ −1.5). These are usually explained by a model involving mass transfer from a carbon-enhanced asymptotic giant branch (AGB) star (one that has since evolved to the white dwarf stage and cannot now be seen) to its lower-m ...
Histograms Constructed from the Data of 239Pu Alpha
... different physical nature had been shown to be determined by cosmophysical factors [1]. Appearance of histograms of a similar shape is repeated periodically: these are the neara-day, near-27-days and annual periods of increased probability of the similar shapes. There are two distinctly distinguishe ...
... different physical nature had been shown to be determined by cosmophysical factors [1]. Appearance of histograms of a similar shape is repeated periodically: these are the neara-day, near-27-days and annual periods of increased probability of the similar shapes. There are two distinctly distinguishe ...
Spring 2015 Mercury - Astronomical Society of the Pacific
... David Malin, the brilliant astrophotographer at the AngloAustralian Observatory, was responsible for what had been widely considered the best photograph of the Eagle Nebula ever collected. Captured in the 1990s, Malin’s ground-based image distinctly shows a bright emission nebula in the background w ...
... David Malin, the brilliant astrophotographer at the AngloAustralian Observatory, was responsible for what had been widely considered the best photograph of the Eagle Nebula ever collected. Captured in the 1990s, Malin’s ground-based image distinctly shows a bright emission nebula in the background w ...
Characterization of the four new transiting planets KOI
... giant planets. KOI-192b has a similar mass (0.29 MJup ) but a longer orbital period of 10.3 days. This places it in a domain where only a few planets are known. KOI-830b, finally, with a mass of 1.27 MJup and a period of 3.5 days, is a typical hot Jupiter. The four planets have radii of 0.98, 1.09, ...
... giant planets. KOI-192b has a similar mass (0.29 MJup ) but a longer orbital period of 10.3 days. This places it in a domain where only a few planets are known. KOI-830b, finally, with a mass of 1.27 MJup and a period of 3.5 days, is a typical hot Jupiter. The four planets have radii of 0.98, 1.09, ...
Sample pages 1 PDF
... The Milky Way, the galaxy in which we live, is but one of many galaxies. As a matter of fact, the Milky Way, also called the Galaxy, is a fairly average representative of the class of spiral galaxies. Two other examples of spiral galaxies are shown in Figs. 1.1 and 1.2, one of which we are viewing f ...
... The Milky Way, the galaxy in which we live, is but one of many galaxies. As a matter of fact, the Milky Way, also called the Galaxy, is a fairly average representative of the class of spiral galaxies. Two other examples of spiral galaxies are shown in Figs. 1.1 and 1.2, one of which we are viewing f ...
Detection of the Stochastic Background of nHz Gravitational Radiation from Massive Black
... [2] USNO time is itself referenced via GPS to a single International Atomic Time. And then the relativistic effects from the moving Earth are removed to approximate a clock at rest in the center of 2003 Summer School, SLAC the solar system. ...
... [2] USNO time is itself referenced via GPS to a single International Atomic Time. And then the relativistic effects from the moving Earth are removed to approximate a clock at rest in the center of 2003 Summer School, SLAC the solar system. ...
special - Carl Zeiss
... results that will lead to fundamental alterations in our view of the physical world comparable to paradigm changes such as the introduction of quantum theory or Einstein’s general theory of relativity some 100 years ago. Exotic objects, such as neutron stars, black holes, remnants of supernovae and ...
... results that will lead to fundamental alterations in our view of the physical world comparable to paradigm changes such as the introduction of quantum theory or Einstein’s general theory of relativity some 100 years ago. Exotic objects, such as neutron stars, black holes, remnants of supernovae and ...
Metal-poor Stars
... Population III stars and concluded that long-lived low-mass star could not easily form from zero-metallicity gas, and hence were extremely rare, if not altogether absent. Today, we know that star formation in zero-metallicity gas indeed does not favor the creation of low-mass stars due to insufficie ...
... Population III stars and concluded that long-lived low-mass star could not easily form from zero-metallicity gas, and hence were extremely rare, if not altogether absent. Today, we know that star formation in zero-metallicity gas indeed does not favor the creation of low-mass stars due to insufficie ...
Discovery and spectroscopy of the young Jovian planet
... Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, Stanford, CA 94305, USA. 2Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA 94040, USA. 3Department of Astronomy, University of California–Berkeley, Berkeley, CA, 94720, USA. 4Lunar and Planetary Labo ...
... Kavli Institute for Particle Astrophysics and Cosmology, Stanford University, Stanford, CA 94305, USA. 2Lawrence Livermore National Laboratory, 7000 East Avenue, Livermore, CA 94040, USA. 3Department of Astronomy, University of California–Berkeley, Berkeley, CA, 94720, USA. 4Lunar and Planetary Labo ...
Exam Review
... 3. Describe how nutrients can be cycled from one sphere to another. E.g. explain how carbon can be cycled from the lithosphere into the atmosphere? How can nitrogen move from the atmosphere into the lithospher?. 4. Describe the cause and effect of eutrophication. 5. State the source of energy for ph ...
... 3. Describe how nutrients can be cycled from one sphere to another. E.g. explain how carbon can be cycled from the lithosphere into the atmosphere? How can nitrogen move from the atmosphere into the lithospher?. 4. Describe the cause and effect of eutrophication. 5. State the source of energy for ph ...
The Kuiper Belt Explored by Serendipitous Stellar Occultations
... known, the occultation profile provides some information on the object’s size without any hypothesis about its albedo. The angular sizes of the stars depend on their spectral and luminosity class and on their distance (see section 2.5). Figure 1 shows that, for a large proportion of stars, there wou ...
... known, the occultation profile provides some information on the object’s size without any hypothesis about its albedo. The angular sizes of the stars depend on their spectral and luminosity class and on their distance (see section 2.5). Figure 1 shows that, for a large proportion of stars, there wou ...
preprint, pdf version - LESIA
... Context. We study large trans-Neptunian objects (TNOs) using stellar occultations. Aims. We derive precise astrometric predictions for stellar occultations by Eris, Haumea, Ixion, Makemake, Orcus, Quaoar, Sedna, Varuna, 2002 TX300 , and 2003 AZ84 for 2011–2015. We construct local astrometric catalog ...
... Context. We study large trans-Neptunian objects (TNOs) using stellar occultations. Aims. We derive precise astrometric predictions for stellar occultations by Eris, Haumea, Ixion, Makemake, Orcus, Quaoar, Sedna, Varuna, 2002 TX300 , and 2003 AZ84 for 2011–2015. We construct local astrometric catalog ...
A Recommendation - Amateur Astronomers, Inc.
... calculated. The calculations project that the comet originated, not in the relatively nearby Kuiper Belt (the region just beyond the orbit of Neptune that is home to icy objects such as Makemake, Eris, and Pluto as well as a large number of potential comets), but rather from the Oort Cloud, a region ...
... calculated. The calculations project that the comet originated, not in the relatively nearby Kuiper Belt (the region just beyond the orbit of Neptune that is home to icy objects such as Makemake, Eris, and Pluto as well as a large number of potential comets), but rather from the Oort Cloud, a region ...
9th Conference of Hel.A.S. Athens, 20
... Storm-time ULF waves observed at low latitudes and their implication in radiation belt electron flux variability Fluctuations of CMEs characteristics during the declining phase of the last solar cycle Analysis of geomagnetic disturbances and cosmic ray intensity variations in relation to medical dat ...
... Storm-time ULF waves observed at low latitudes and their implication in radiation belt electron flux variability Fluctuations of CMEs characteristics during the declining phase of the last solar cycle Analysis of geomagnetic disturbances and cosmic ray intensity variations in relation to medical dat ...
Lecture 6
... in astrophysics as they efficiently transform gravitational potential energy into radiation. Accretion disks are seen around stars, but the most extreme disks are seen at the centre of quasars. These orbit black holes with masses of ~106-9 M, and radiate up to 1014 L, outshining all of the stars i ...
... in astrophysics as they efficiently transform gravitational potential energy into radiation. Accretion disks are seen around stars, but the most extreme disks are seen at the centre of quasars. These orbit black holes with masses of ~106-9 M, and radiate up to 1014 L, outshining all of the stars i ...
