TWO NEW LONG-PERIOD GIANT PLANETS FROM THE
... as the most probable mass and age, while the 1σ-like widths were used to estimate the errors. Contrary to a more common practice, we did not use parallaxes in our mass and age determinations. This is because one of our stars, HD 95872, does not have a reliable measurement of trigonometric parallax; ...
... as the most probable mass and age, while the 1σ-like widths were used to estimate the errors. Contrary to a more common practice, we did not use parallaxes in our mass and age determinations. This is because one of our stars, HD 95872, does not have a reliable measurement of trigonometric parallax; ...
Planet Hunters: The First Two Planet Candidates Identified by the
... The past decade has witnessed an explosion in the number of known planets beyond our solar system. From the ground, planet searches using techniques that include Doppler observations, transit photometry, microlensing, and direct imaging have identified more than 500 exoplanets (Schneider 2011; Wrigh ...
... The past decade has witnessed an explosion in the number of known planets beyond our solar system. From the ground, planet searches using techniques that include Doppler observations, transit photometry, microlensing, and direct imaging have identified more than 500 exoplanets (Schneider 2011; Wrigh ...
Video Lesson Information Astronomy: Observations & Theories Astronomy 1
... Lesson 1 - The Study of the Universe This lesson takes students on a journey from planet Earth to the distant galaxies and superclusters. It is illustrated with stunning computer animation and photographs from NASA, the Jet Propulsion Laboratory (JPL), and astronomical observatories. This journey in ...
... Lesson 1 - The Study of the Universe This lesson takes students on a journey from planet Earth to the distant galaxies and superclusters. It is illustrated with stunning computer animation and photographs from NASA, the Jet Propulsion Laboratory (JPL), and astronomical observatories. This journey in ...
Comprehensive Wide-Band Magnitudes and Albedos for the Planets
... transforming the magnitudes of standard stars of the Johnson-Cousins system. Validation was accomplished by performing photometry on a sample of the catalog stars and also by deriving synthetic magnitudes from Hubble Space Telescope spectra for a separate sample (Mallama and Krobusek, 2015). The unc ...
... transforming the magnitudes of standard stars of the Johnson-Cousins system. Validation was accomplished by performing photometry on a sample of the catalog stars and also by deriving synthetic magnitudes from Hubble Space Telescope spectra for a separate sample (Mallama and Krobusek, 2015). The unc ...
White dwarf binaries
... White dwarf binaries The white dwarf binaries considered in this chapter are better known as cataclysmic variables (CVs) and are interacting binaries in that the white dwarf is accreting material from its (usually) cool, late-type companion star in a short (of the order of hours) orbital period. The ...
... White dwarf binaries The white dwarf binaries considered in this chapter are better known as cataclysmic variables (CVs) and are interacting binaries in that the white dwarf is accreting material from its (usually) cool, late-type companion star in a short (of the order of hours) orbital period. The ...
Kepler Mission
... Modern astronomers were also able to make their own discoveries through advanced technologies including the Hubble Space Telescope (HST). This telescope in orbit about the Earth has captured stunning images of the far distant recesses of our universe. Past discoveries from early astronomers, mathema ...
... Modern astronomers were also able to make their own discoveries through advanced technologies including the Hubble Space Telescope (HST). This telescope in orbit about the Earth has captured stunning images of the far distant recesses of our universe. Past discoveries from early astronomers, mathema ...
Astronomical Geography: An Examination of the Early American
... Morse, Modern Geography, over twenty pages were devoted to "Astronomy as Connected with the Science of Geography." The known planets were described in the 1814 edition in considerable detail, and the book included only this short introductory paragraph on planetary satellites: "A satellite, or moon, ...
... Morse, Modern Geography, over twenty pages were devoted to "Astronomy as Connected with the Science of Geography." The known planets were described in the 1814 edition in considerable detail, and the book included only this short introductory paragraph on planetary satellites: "A satellite, or moon, ...
Untitled
... The solar flux impinging on the planet is also reduced, as compared with the solar flux leaving the photosphere of the star. The total energy per unit frequency leaving the star is 4π r2 (π B(ν, T )), where r is the radius of the star and T is the temperature of its photosphere. At a distance r fr ...
... The solar flux impinging on the planet is also reduced, as compared with the solar flux leaving the photosphere of the star. The total energy per unit frequency leaving the star is 4π r2 (π B(ν, T )), where r is the radius of the star and T is the temperature of its photosphere. At a distance r fr ...
Script Chapter 7 part 2
... Before 1980 there existed only indirect evidence about the presence of circumstellar disk around young stars. In the 1980’s collimated outflows, so-called jets, could be clearly associated with young stars (Slide 7.5). Jets are a well known phenomenon of accretion disks in active galactic nuclei and ...
... Before 1980 there existed only indirect evidence about the presence of circumstellar disk around young stars. In the 1980’s collimated outflows, so-called jets, could be clearly associated with young stars (Slide 7.5). Jets are a well known phenomenon of accretion disks in active galactic nuclei and ...
Slide 1
... star—needs 80 times more mass! But its energy output was larger in the past; could have been 100 times brighter than the Moon as seen from Earth ...
... star—needs 80 times more mass! But its energy output was larger in the past; could have been 100 times brighter than the Moon as seen from Earth ...
Earth`s Moon and Solar System Test Prep
... kilometers away from the star’s surface. The planet was discovered as a result of observing a cyclic decrease in the brightness of Ogle-Tr-3 every 28.5 hours. The changing brightness is the result of the planet blocking some of the starlight when it is between Ogle-Tr-3 and Earth. This observation a ...
... kilometers away from the star’s surface. The planet was discovered as a result of observing a cyclic decrease in the brightness of Ogle-Tr-3 every 28.5 hours. The changing brightness is the result of the planet blocking some of the starlight when it is between Ogle-Tr-3 and Earth. This observation a ...
Kepler-423b: a half-Jupiter mass planet transiting a very old solar
... high-precision radial velocity measurements taken with the FIES spectrograph at the Nordic Optical Telescope. We simultaneously modelled the photometric and spectroscopic data-sets using Bayesian approach coupled with Markov chain Monte Carlo sampling. We found that the Kepler pre-search data condit ...
... high-precision radial velocity measurements taken with the FIES spectrograph at the Nordic Optical Telescope. We simultaneously modelled the photometric and spectroscopic data-sets using Bayesian approach coupled with Markov chain Monte Carlo sampling. We found that the Kepler pre-search data condit ...
Earths Moon and Solar System Test Prep-2
... from the Sun, in astronomical units (AU), are shown beneath the horizontal axis. (1 AU = 149.6 million kilometers). The plotted line on this graph shows the relationship between a planet’s distance from the Sun and the inferred temperature at its formation. The regions within the graph indicate the ...
... from the Sun, in astronomical units (AU), are shown beneath the horizontal axis. (1 AU = 149.6 million kilometers). The plotted line on this graph shows the relationship between a planet’s distance from the Sun and the inferred temperature at its formation. The regions within the graph indicate the ...
Eight billion asteroids in the Oort cloud
... To break this degeneracy, one approach is to try to associate Oort cloud objects with their birth region. A similar approach has already been suggested for Main belt asteroids (DeMeo & Carry 2014). Traditionally, small bodies have been divided between comets (icy bodies on highly eccentric orbits), ...
... To break this degeneracy, one approach is to try to associate Oort cloud objects with their birth region. A similar approach has already been suggested for Main belt asteroids (DeMeo & Carry 2014). Traditionally, small bodies have been divided between comets (icy bodies on highly eccentric orbits), ...
Comets and the Age of the Solar System
... from the Sun, whether the comet is approaching or leaving around the Sun. Comet Hyakutake, which was visible in the Sun. 1996, had a small nucleus, but was bright for its size (see Figure 2). This has caused some to suggest that this is a As mentioned previously, the brightness of a comet is young c ...
... from the Sun, whether the comet is approaching or leaving around the Sun. Comet Hyakutake, which was visible in the Sun. 1996, had a small nucleus, but was bright for its size (see Figure 2). This has caused some to suggest that this is a As mentioned previously, the brightness of a comet is young c ...
Lecture 1: Introduction to exoplanetary transits
... Early detections! Transit depths and durations! Model-independent system parameters! ...
... Early detections! Transit depths and durations! Model-independent system parameters! ...
Eight billion asteroids in the Oort cloud
... To transform the odds of a single small body ever becoming a member of the Oort cloud to the fraction of the Oort cloud, we need to know the initial populations at all distances from the Sun. The scaling usually assumed is that the surface density of the protoSolar nebula followed ∝ r−1.5 , based o ...
... To transform the odds of a single small body ever becoming a member of the Oort cloud to the fraction of the Oort cloud, we need to know the initial populations at all distances from the Sun. The scaling usually assumed is that the surface density of the protoSolar nebula followed ∝ r−1.5 , based o ...
Untitled
... Earth and no where else, then clearly such colossal nature of the universe seems like an awfully waste of space. From what is understood about our known universe is that, it may be infinitely large and the one that we are familiar with might as well be one of many universes that are possibly our th ...
... Earth and no where else, then clearly such colossal nature of the universe seems like an awfully waste of space. From what is understood about our known universe is that, it may be infinitely large and the one that we are familiar with might as well be one of many universes that are possibly our th ...
T
... requires a long time base on one hand, and the knowledge of stable stellar sources on the other hand. Especially the latter point represents a new challenge since the intrinsic stability of the stars has never been studied at this level of precision before. Nevertheless we have been able to gain som ...
... requires a long time base on one hand, and the knowledge of stable stellar sources on the other hand. Especially the latter point represents a new challenge since the intrinsic stability of the stars has never been studied at this level of precision before. Nevertheless we have been able to gain som ...
81 KB - CSIRO Publishing
... Astronomers like to classify things. That classification may initially be based on appearance to the human eye (e.g. Hubble 1926), but to make progress this taxonomy may need to have some basis in the underlying nature or physics of the objects being examined. With this mind, astronomers need a work ...
... Astronomers like to classify things. That classification may initially be based on appearance to the human eye (e.g. Hubble 1926), but to make progress this taxonomy may need to have some basis in the underlying nature or physics of the objects being examined. With this mind, astronomers need a work ...
Uranus
... Neptune ‘ice giants’ because most of their mass is ice and some rocky material. It appears that Uranus does not have a rocky core like Jupiter and Saturn but rather that its material is more or less uniformly distributed. ...
... Neptune ‘ice giants’ because most of their mass is ice and some rocky material. It appears that Uranus does not have a rocky core like Jupiter and Saturn but rather that its material is more or less uniformly distributed. ...
uranus
... Neptune ‘ice giants’ because most of their mass is ice and some rocky material. It appears that Uranus does not have a rocky core like Jupiter and Saturn but rather that its material is more or less uniformly distributed. ...
... Neptune ‘ice giants’ because most of their mass is ice and some rocky material. It appears that Uranus does not have a rocky core like Jupiter and Saturn but rather that its material is more or less uniformly distributed. ...
Superstars of Astronomy: Debra Fischer transcript
... hotter cottage industry than exoplanets. There’s so much excitement and interest in them, so this is really going to be a special talk. We now know of more than 1,800 exoplanets. Kepler has produced an additional 2,900 candidates. The pace of discoveries is really dizzying. It’s one of those things ...
... hotter cottage industry than exoplanets. There’s so much excitement and interest in them, so this is really going to be a special talk. We now know of more than 1,800 exoplanets. Kepler has produced an additional 2,900 candidates. The pace of discoveries is really dizzying. It’s one of those things ...
A Perspective from Extinct Radionuclides on a Young
... millimeter- to centimeter-sized, partially crystallized silicate droplets. Coexisting with these chondrules are refractory inclusions (calcium-, aluminum-rich inclusions, or CAIs) that are approximately the same size but differ in their highly refractory chemical compositions. Chondrules and CAIs ar ...
... millimeter- to centimeter-sized, partially crystallized silicate droplets. Coexisting with these chondrules are refractory inclusions (calcium-, aluminum-rich inclusions, or CAIs) that are approximately the same size but differ in their highly refractory chemical compositions. Chondrules and CAIs ar ...
Astonomy-Space The Final Frontier
... Constructing explanations and designing solutions in 9 – 12 builds on K – 8 experiences and progresses to explanations and designs that are supported by multiple and independent student-generated sources of evidence consistent with scientific ideas, principles, and theories. Construct an explanati ...
... Constructing explanations and designing solutions in 9 – 12 builds on K – 8 experiences and progresses to explanations and designs that are supported by multiple and independent student-generated sources of evidence consistent with scientific ideas, principles, and theories. Construct an explanati ...
IAU definition of planet
The definition of planet set in Prague in 2006 by the International Astronomical Union (IAU) states that, in the Solar System, a planet is a celestial body which: is in orbit around the Sun, has sufficient mass to assume hydrostatic equilibrium (a nearly round shape), and has ""cleared the neighborhood"" around its orbit.A non-satellite body fulfilling only the first two of these criteria is classified as a ""dwarf planet"". According to the IAU, ""planets and dwarf planets are two distinct classes of objects"". A non-satellite body fulfilling only the first criterion is termed a ""small Solar System body"" (SSSB). Initial drafts planned to include dwarf planets as a subcategory of planets, but because this could potentially have led to the addition of several dozens of planets into the Solar System, this draft was eventually dropped. The definition was a controversial one and has drawn both support and criticism from different astronomers, but has remained in use.According to this definition, there are eight planets in the Solar System. The definition distinguishes planets from smaller bodies and is not useful outside the Solar System, where smaller bodies cannot be found yet. Extrasolar planets, or exoplanets, are covered separately under a complementary 2003 draft guideline for the definition of planets, which distinguishes them from dwarf stars, which are larger.