Scientific requirements of ALMA, and its capabilities for key
... Image gas kinematics in protostars and protoplanetary disks around Sun-like stars at 140pc distance, enabling one to study their physical, chemical and magnetic field structures and to detect the gaps created by planets undergoing formation in the disk. Provide precise images at 0.1 arcsec resolutio ...
... Image gas kinematics in protostars and protoplanetary disks around Sun-like stars at 140pc distance, enabling one to study their physical, chemical and magnetic field structures and to detect the gaps created by planets undergoing formation in the disk. Provide precise images at 0.1 arcsec resolutio ...
Picture: Alnitak is the left-hand star in Orion`s Belt. Image: NASA
... carbon/oxygen ratios that are typically four to five times higher than those of normal red giants and show little trace of the light metal oxide bands that are the usual red giant hallmark. They resemble S stars in their relative proportion of heavy and light metals, but contain far more carbon in t ...
... carbon/oxygen ratios that are typically four to five times higher than those of normal red giants and show little trace of the light metal oxide bands that are the usual red giant hallmark. They resemble S stars in their relative proportion of heavy and light metals, but contain far more carbon in t ...
1 - ESO
... cold to be orbiting with semi-major axes of 50 AU or more from the central star. Thus, the debris disks are almost always to be considered (young) analogs of the Sun’s Kuiper Belt. • Until the past year, among the 100+ main sequence stars with far-IR excess, only one example of warm dust signifying ...
... cold to be orbiting with semi-major axes of 50 AU or more from the central star. Thus, the debris disks are almost always to be considered (young) analogs of the Sun’s Kuiper Belt. • Until the past year, among the 100+ main sequence stars with far-IR excess, only one example of warm dust signifying ...
Notes 3 - 1 Notes 3: Formation of the solar system 3.1 Starting
... While the T Tauri stage is a good cleaning-up stage for the solar system, there are also other things happening in the disk of the star. Disks of material have been observed around many stars since the first one was discovered around beta Pictoris. This is a very large disk, (1500 AU wide), and also ...
... While the T Tauri stage is a good cleaning-up stage for the solar system, there are also other things happening in the disk of the star. Disks of material have been observed around many stars since the first one was discovered around beta Pictoris. This is a very large disk, (1500 AU wide), and also ...
Lecture 10
... Evolution of low mass star • End of Hydrogen in Core while core is contracting (7) • Burning of H Æ He in thick ...
... Evolution of low mass star • End of Hydrogen in Core while core is contracting (7) • Burning of H Æ He in thick ...
Galactic Star Formation Science with Integral Field
... • Andrews et al ‘08 detected the disk in submm, high spatial resolution dust continuum and CO gas! extends out to >~500AU from the central source - MASSIVE disk with ...
... • Andrews et al ‘08 detected the disk in submm, high spatial resolution dust continuum and CO gas! extends out to >~500AU from the central source - MASSIVE disk with ...
The Milky Way - Montgomery College
... Metal Abundances in the Universe All elements heavier than He are very rare. ...
... Metal Abundances in the Universe All elements heavier than He are very rare. ...
Effects of Mutual Transits by Extrasolar Planet
... A major difference is that geometrical blocking of one faint object by the other transiting a parent star causes an apparent increase in light curves, whereas eclipsing binaries make a decrease. What is more important is that, in both cases when one faint object transits the other and vice versa, ch ...
... A major difference is that geometrical blocking of one faint object by the other transiting a parent star causes an apparent increase in light curves, whereas eclipsing binaries make a decrease. What is more important is that, in both cases when one faint object transits the other and vice versa, ch ...
A sound nebula: the origin of the Solar System in the field of a
... result of gravitational forces due to nearby stars. Such an Oort cloud emergence scenario seems very unlikely for such a large number of bodies. Neptune is the most distant gas planet. Based on the decreasing series of giant planet masses Jupiter: 318 earth masses (M⊕ ); Saturn: 95.3 M⊕ ; Uranus: 14 ...
... result of gravitational forces due to nearby stars. Such an Oort cloud emergence scenario seems very unlikely for such a large number of bodies. Neptune is the most distant gas planet. Based on the decreasing series of giant planet masses Jupiter: 318 earth masses (M⊕ ); Saturn: 95.3 M⊕ ; Uranus: 14 ...
On the probability of habitable planets.
... The recent detections of many extrasolar planets have allowed us to make a major step forward in our investigation of the ultimate question in astrobiology: “are we alone ?”. In particular, we will soon be able to estimate one of the first terms of the Drake equation, the fraction of stars with plan ...
... The recent detections of many extrasolar planets have allowed us to make a major step forward in our investigation of the ultimate question in astrobiology: “are we alone ?”. In particular, we will soon be able to estimate one of the first terms of the Drake equation, the fraction of stars with plan ...
ISIMA lectures on celestial mechanics. 3
... The use of the arithmetic mean of the radii (rather than, say, the geometric mean) is arbitrary but the choice of what mean to use makes very little difference since the mutual Hill radius is only dynamically important when r1 and r2 are similar, since we have assumed that m1 , m2 M . In contrast, ...
... The use of the arithmetic mean of the radii (rather than, say, the geometric mean) is arbitrary but the choice of what mean to use makes very little difference since the mutual Hill radius is only dynamically important when r1 and r2 are similar, since we have assumed that m1 , m2 M . In contrast, ...
Chapter 6 The Solar System
... 6.7 How Did the Solar System Form? Nebular contraction is followed by condensation around dust grains, known to exist in interstellar clouds such as the one shown here. Accretion then leads to larger and larger clumps; finally gravitational attraction takes over and planets form. © 2011 Pearson Edu ...
... 6.7 How Did the Solar System Form? Nebular contraction is followed by condensation around dust grains, known to exist in interstellar clouds such as the one shown here. Accretion then leads to larger and larger clumps; finally gravitational attraction takes over and planets form. © 2011 Pearson Edu ...
PPT Format of Slides
... 6.7 How Did the Solar System Form? Nebular contraction is followed by condensation around dust grains, known to exist in interstellar clouds such as the one shown here. Accretion then leads to larger and larger clumps; finally gravitational attraction takes over and planets form. © 2011 Pearson Edu ...
... 6.7 How Did the Solar System Form? Nebular contraction is followed by condensation around dust grains, known to exist in interstellar clouds such as the one shown here. Accretion then leads to larger and larger clumps; finally gravitational attraction takes over and planets form. © 2011 Pearson Edu ...
PSC100 Summary Chapters 10 to Chapter 20
... about two dozen other galaxies in what has come to be known simply as THE LOCAL GROUP. The primary constituents of the Local group are two averagesized spiral galaxies, the Milky Way and Andromeda, along with one other small spiral, a few irregulars, and several small ellipticals. Two of the irregul ...
... about two dozen other galaxies in what has come to be known simply as THE LOCAL GROUP. The primary constituents of the Local group are two averagesized spiral galaxies, the Milky Way and Andromeda, along with one other small spiral, a few irregulars, and several small ellipticals. Two of the irregul ...
Lecture7_2014_v2
... • Observed data (today) are most consistent with theory that all the planets formed out of the same cloud of gas at the same time • Some of the wide variety seen within the existing planets may be due to chance events like collisions • Discovery of planet-forming disks and actual planets around othe ...
... • Observed data (today) are most consistent with theory that all the planets formed out of the same cloud of gas at the same time • Some of the wide variety seen within the existing planets may be due to chance events like collisions • Discovery of planet-forming disks and actual planets around othe ...
Living with a Red Dwarf - Center for Space and Habitability (CSH)
... Gliese catalog of the ∼ 3, 803 stars within 25 parsecs (82 light years) ...
... Gliese catalog of the ∼ 3, 803 stars within 25 parsecs (82 light years) ...
pierrehumbert_lecture_1
... Gliese catalog of the ∼ 3, 803 stars within 25 parsecs (82 light years) ...
... Gliese catalog of the ∼ 3, 803 stars within 25 parsecs (82 light years) ...
The Milky Way - TCNJ | The College of New Jersey
... total mass can be estimated by the velocity of stars at different distances. • Out to solar distance (about 8 kpc) the mass is about 1 x 1011 M (mostly stars) • Out to ~15 kpc, (the visible radius) a good estimate for the mass is nearly 4 x 1011 M (now mostly DM). • Out to about 70 kpc (> 90% dark ...
... total mass can be estimated by the velocity of stars at different distances. • Out to solar distance (about 8 kpc) the mass is about 1 x 1011 M (mostly stars) • Out to ~15 kpc, (the visible radius) a good estimate for the mass is nearly 4 x 1011 M (now mostly DM). • Out to about 70 kpc (> 90% dark ...
Red Dwarf Stars: Ages, Rotation, Magnetic
... pre-main sequence stars and close binaries in the sample. Also in this study, we exclude spectral types later than ∼M7 because they appear to have Age-Rotation-Activity relations quite different to earlier spectral types. From a limited sample of M7–9 V stars, it appears that they do not undergo mag ...
... pre-main sequence stars and close binaries in the sample. Also in this study, we exclude spectral types later than ∼M7 because they appear to have Age-Rotation-Activity relations quite different to earlier spectral types. From a limited sample of M7–9 V stars, it appears that they do not undergo mag ...
Teacher Guide pages
... The space object definitions that are presented in this activity are the current descriptions used by the scientific community. The classification system, however, is imperfect because the names and groupings were created before telescopes provided more information on the objects. For example, some ...
... The space object definitions that are presented in this activity are the current descriptions used by the scientific community. The classification system, however, is imperfect because the names and groupings were created before telescopes provided more information on the objects. For example, some ...
Document
... Research School of Earth Sciences, (RSES) who are exploring this inner core. “Actually one of the problems we face in modelling the Earth’s inner core is that it’s very difficult to replicate those pressures and temperatures in the laboratory so there’s a degree of uncertainty about way iron behaves ...
... Research School of Earth Sciences, (RSES) who are exploring this inner core. “Actually one of the problems we face in modelling the Earth’s inner core is that it’s very difficult to replicate those pressures and temperatures in the laboratory so there’s a degree of uncertainty about way iron behaves ...
ON THE FORMATION OF MASSIVE STELLAR CLUSTERS
... Richtler 2000 and Larsen 1999). This star-forming activity in which masses similar to the total gas content found in galactic giant molecular clouds (massive elongated structures that extend over 100 pc in length) are turned into stars, all in a very small volume (∼ few pc) much smaller than the typ ...
... Richtler 2000 and Larsen 1999). This star-forming activity in which masses similar to the total gas content found in galactic giant molecular clouds (massive elongated structures that extend over 100 pc in length) are turned into stars, all in a very small volume (∼ few pc) much smaller than the typ ...
A sound nebula: the origin of the Solar System in the field of a
... result of gravitational forces due to nearby stars. Such an Oort cloud emergence scenario seems very unlikely for such a large number of bodies. Neptune is the most distant gas planet. Based on the decreasing series of giant planet masses Jupiter: 318 earth masses (M⊕ ); Saturn: 95.3 M⊕ ; Uranus: 14 ...
... result of gravitational forces due to nearby stars. Such an Oort cloud emergence scenario seems very unlikely for such a large number of bodies. Neptune is the most distant gas planet. Based on the decreasing series of giant planet masses Jupiter: 318 earth masses (M⊕ ); Saturn: 95.3 M⊕ ; Uranus: 14 ...
Planetary system
A planetary system is a set of gravitationally bound non-stellar objects in orbit around a star or star system. Generally speaking, systems with one or more planets constitute a planetary system, although such systems may also consist of bodies such as dwarf planets, asteroids, natural satellites, meteoroids, comets, planetesimals and circumstellar disks. The Sun together with its planetary system, which includes Earth, is known as the Solar System. The term exoplanetary system is sometimes used in reference to other planetary systems.A total of 1968 exoplanets (in 1248 planetary systems, including 490 multiple planetary systems) have been identified as of 1 October 2015.Of particular interest to astrobiology is the habitable zone of planetary systems where planets could have surface liquid water.