arXiv:1502.03605v2 [astro-ph.EP] 24 Apr 2015
... silicate mantle and a crust (see Howe et al. 2014, for a review of previous and current work). In this work, we focus on terrestrialtype rocky planets and assume that these consist of a pure iron core, a silicate mantle comprising the oxides Na2 O-CaO-FeOMgO-Al2 O3 -SiO2 , and that volatiles have a ...
... silicate mantle and a crust (see Howe et al. 2014, for a review of previous and current work). In this work, we focus on terrestrialtype rocky planets and assume that these consist of a pure iron core, a silicate mantle comprising the oxides Na2 O-CaO-FeOMgO-Al2 O3 -SiO2 , and that volatiles have a ...
The History of Infrared Spectroscopy
... The development of spectroscopy is inextricably linked with advances in the theory of light, refraction, and diffraction that began in the mid-17th century. Before this time, it was believed that a prism added color to incoming light. However, Sir Isaac Newton conducted a famous experiment in 1666 i ...
... The development of spectroscopy is inextricably linked with advances in the theory of light, refraction, and diffraction that began in the mid-17th century. Before this time, it was believed that a prism added color to incoming light. However, Sir Isaac Newton conducted a famous experiment in 1666 i ...
Stars
... by striking a balance between the gravity of their enormous mass and the pressure produced by the energy of fusion reactions. A main sequence star is in equilibrium as Hydrogen burning supports it against gravitational collapse. What happens as the hydrogen runs out? © 2007 Pearson Education Inc., p ...
... by striking a balance between the gravity of their enormous mass and the pressure produced by the energy of fusion reactions. A main sequence star is in equilibrium as Hydrogen burning supports it against gravitational collapse. What happens as the hydrogen runs out? © 2007 Pearson Education Inc., p ...
The Spectra ot Novae
... pre-nova star and the rapidly brightening nova in its early phase. The equal luminosity of pre- and post-nova stars, combined with the similarity of recurrent and typical novae at minimum, even furnish good ground for belief that we do know something of the pre-outburst stage, but this view is not u ...
... pre-nova star and the rapidly brightening nova in its early phase. The equal luminosity of pre- and post-nova stars, combined with the similarity of recurrent and typical novae at minimum, even furnish good ground for belief that we do know something of the pre-outburst stage, but this view is not u ...
the orbits of neptune`s outer satellites
... Figure 1. Area imaged around Neptune for satellites using the Suprime-Cam on the 8.2 m Subaru telescope. The black dot at the center represents Neptune’s position. Stars represent the positions of the outer satellites of Neptune. All six known outer satellites of Neptune could be recovered in just t ...
... Figure 1. Area imaged around Neptune for satellites using the Suprime-Cam on the 8.2 m Subaru telescope. The black dot at the center represents Neptune’s position. Stars represent the positions of the outer satellites of Neptune. All six known outer satellites of Neptune could be recovered in just t ...
Element Segregation in Low Metallicity Stars and the Primordial
... maximum for a rate about ten times the solar wind and then decreases for larger rates due to nuclear destruction. The most remarkable result is that the maximum surface lithium abundance which is obtained lies very close to Limax . This behavior has a simple physical reason related to the macroscopi ...
... maximum for a rate about ten times the solar wind and then decreases for larger rates due to nuclear destruction. The most remarkable result is that the maximum surface lithium abundance which is obtained lies very close to Limax . This behavior has a simple physical reason related to the macroscopi ...
ASTRONOMICAL BINOCULARS
... Other information such as distance and magnitude may be listed in ephemerides (plural of ephemeris). ALTITUDE - The altitude of a celestial object is the angular distance of that object above the horizon. The maximum possible altitude is the altitude of an object at the zenith, 90°. The altitude of ...
... Other information such as distance and magnitude may be listed in ephemerides (plural of ephemeris). ALTITUDE - The altitude of a celestial object is the angular distance of that object above the horizon. The maximum possible altitude is the altitude of an object at the zenith, 90°. The altitude of ...
observations of white dwarfs in the solar neighborhood
... analyzed using a 2 minimization technique and our grid of cool hydrogen atmospheres introduced in Vennes & Kawka (2003). The adopted errors are 1 and correspond to 66% confidence level. The models include convective energy transport as well as relevant broadening mechanisms for the hydrogen lines ...
... analyzed using a 2 minimization technique and our grid of cool hydrogen atmospheres introduced in Vennes & Kawka (2003). The adopted errors are 1 and correspond to 66% confidence level. The models include convective energy transport as well as relevant broadening mechanisms for the hydrogen lines ...
CORONAL EVOLUTION OF THE SUN IN TIME: HIGH
... coronal radio and X-ray emissions. The coronal emissions display the largest range of variation in response to the surface magnetic activity level. Whereas starspots may cover a few percent of the photosphere of the most active solar analogs, thus producing a photometric wave with a modulation depth ...
... coronal radio and X-ray emissions. The coronal emissions display the largest range of variation in response to the surface magnetic activity level. Whereas starspots may cover a few percent of the photosphere of the most active solar analogs, thus producing a photometric wave with a modulation depth ...
Unit #: - Applied Learning Dept., STEM+Computer Science
... SC.8.E.5.1: Recognize that there are enormous distances between objects in space and apply our knowledge of light and space travel to understand this distance. SC.8.E.5.2: Recognize that the universe contains many billions of galaxies and that each galaxy contains many billions of stars. SC.8.E.5.3: ...
... SC.8.E.5.1: Recognize that there are enormous distances between objects in space and apply our knowledge of light and space travel to understand this distance. SC.8.E.5.2: Recognize that the universe contains many billions of galaxies and that each galaxy contains many billions of stars. SC.8.E.5.3: ...
Observations of the asteroid 4844 Matsuyama
... Space mission to the asteroid Main objective: a detailed research of the movement, surface and composition of the asteroid 4844 Matsuyama. An important purpose of the space mission to the asteroid is an analysis of the chemical composition of the asteroid 4844 Matsuyama: content of minerals, organi ...
... Space mission to the asteroid Main objective: a detailed research of the movement, surface and composition of the asteroid 4844 Matsuyama. An important purpose of the space mission to the asteroid is an analysis of the chemical composition of the asteroid 4844 Matsuyama: content of minerals, organi ...
Stellar Evolution Nucleosynthesis
... massive enough to fuse some He with C to make oxygen, but most of the C and O will be trapped forever in the white dwarf). • Degeneracy pressure supports the white dwarf against gravity. • White dwarf spend eternity cooling off, eventually ...
... massive enough to fuse some He with C to make oxygen, but most of the C and O will be trapped forever in the white dwarf). • Degeneracy pressure supports the white dwarf against gravity. • White dwarf spend eternity cooling off, eventually ...
Hint of a transiting extended atmosphere on 55 Cancri b⋆
... The naked-eye star 55 Cancri hosts a planetary system with five known planets, including a hot super-Earth (55 Cnc e) extremely close to its star and a farther out giant planet (55 Cnc b), found in milder irradiation conditions with respect to other known hot Jupiters. This system raises important q ...
... The naked-eye star 55 Cancri hosts a planetary system with five known planets, including a hot super-Earth (55 Cnc e) extremely close to its star and a farther out giant planet (55 Cnc b), found in milder irradiation conditions with respect to other known hot Jupiters. This system raises important q ...
Properties of Wolf-Rayet Stars - Paul Crowther, University of Sheffield
... await discovery or confirmation (see Moffat, this volume). Spectroscopic measurement of masses via surface gravities using photospheric lines is not possible for WR stars due to their dense stellar winds. ...
... await discovery or confirmation (see Moffat, this volume). Spectroscopic measurement of masses via surface gravities using photospheric lines is not possible for WR stars due to their dense stellar winds. ...
C O N T E N TS BOOK I Lecture 1 -- Aristotle`s intent in this book
... we shall [first] recall the positions laid down by us in the earlier books an d the determinations already determined therein, so that we may, when necessary , use them to manifest the proposition . 16. Then [12] he sets forth certain things needed for what is to follow . About this he does two thin ...
... we shall [first] recall the positions laid down by us in the earlier books an d the determinations already determined therein, so that we may, when necessary , use them to manifest the proposition . 16. Then [12] he sets forth certain things needed for what is to follow . About this he does two thin ...
Primary 105-Year Age of Seth and Mayan 104
... Ancient observers noticed the relative positions of Earth, Venus and the Sun recur according to a schedule. Venus orbits the sun 13 times in 8 years during the period in which the earth orbits the sun 8 times. Venus passes between the earth and the sun 5 times in 8 years. Venus, in astronomical term ...
... Ancient observers noticed the relative positions of Earth, Venus and the Sun recur according to a schedule. Venus orbits the sun 13 times in 8 years during the period in which the earth orbits the sun 8 times. Venus passes between the earth and the sun 5 times in 8 years. Venus, in astronomical term ...
Document
... In keeping with Aristotelian notions, Kepler believed that a force was necessary to drive the planets along their orbits, not to keep them in orbit. Consequently, Kepler was unable to provide a correct explanation for these three laws. It was not until Newton that the single unifying reason for thes ...
... In keeping with Aristotelian notions, Kepler believed that a force was necessary to drive the planets along their orbits, not to keep them in orbit. Consequently, Kepler was unable to provide a correct explanation for these three laws. It was not until Newton that the single unifying reason for thes ...
Title: Optical and NEar IR Interferometric or
... artificial stars the focus anisoplanatism effect can be totally removed. Moreover the Tallon and Foy multilaser technique makes also possible to obtain turbulence tomography, separating the contributions to the instantaneous wave front phase error that are due to different layers of the atmosphere. ...
... artificial stars the focus anisoplanatism effect can be totally removed. Moreover the Tallon and Foy multilaser technique makes also possible to obtain turbulence tomography, separating the contributions to the instantaneous wave front phase error that are due to different layers of the atmosphere. ...
A Brief History of Time
... As far as Kepler was concerned, elliptical orbits were merely an ad hoc hypothesis, and a rather repugnant one at that, because ellipses were clearly less perfect than circles. Having discovered almost by accident that elliptical orbits fit the observations well, he could not reconcile them with his ...
... As far as Kepler was concerned, elliptical orbits were merely an ad hoc hypothesis, and a rather repugnant one at that, because ellipses were clearly less perfect than circles. Having discovered almost by accident that elliptical orbits fit the observations well, he could not reconcile them with his ...
Isotopic composition of Hg and Pt in 5 slowly rotating HgMn stars *
... Many HgMn stars exhibit an extreme atmospheric overabundance of mercury: up to 5.7 dex (Smith 1997). The isotopic mix of Hg in HgMn stars diers from one star to the next, ranging from the terrestrial mix to nearly pure 204 Hg (Cowley & Aikman 1975 White et al. 1976 Smith 1997). Heavier isotopes t ...
... Many HgMn stars exhibit an extreme atmospheric overabundance of mercury: up to 5.7 dex (Smith 1997). The isotopic mix of Hg in HgMn stars diers from one star to the next, ranging from the terrestrial mix to nearly pure 204 Hg (Cowley & Aikman 1975 White et al. 1976 Smith 1997). Heavier isotopes t ...