Planet formation around stars of various masses: The snow line and
... evolution of accretion and the central star to investigate how gas giant frequency changes with stellar mass. The snow line distance changes weakly with stellar mass; thus giant planets form over a wide range of spectral types. The probability that a given star has at least one gas giant increases l ...
... evolution of accretion and the central star to investigate how gas giant frequency changes with stellar mass. The snow line distance changes weakly with stellar mass; thus giant planets form over a wide range of spectral types. The probability that a given star has at least one gas giant increases l ...
The Dynamical Evolution of the Asteroid Belt
... of Jupiter and Saturn. These are called g5 and g6 for the longitude of perihelion precession (the former dominating in the precession of the perihelion of Jupiter, the latter in that of Saturn), and s6 for the longitude of the node precession (both the nodes of Jupiter and Saturn precess at the same ...
... of Jupiter and Saturn. These are called g5 and g6 for the longitude of perihelion precession (the former dominating in the precession of the perihelion of Jupiter, the latter in that of Saturn), and s6 for the longitude of the node precession (both the nodes of Jupiter and Saturn precess at the same ...
Presolar Cloud Collapse and the Formation and Early Evolution of
... which stars in regions of low-mass (less than ~8 M ) star formation begin their life, the “standard model” of star formation (Shu et al., 1987). 2.2.2. Shock-triggered collapse and injection of radioactivity. This standard model has been challenged by evidence for short cloud lifetimes and a highly ...
... which stars in regions of low-mass (less than ~8 M ) star formation begin their life, the “standard model” of star formation (Shu et al., 1987). 2.2.2. Shock-triggered collapse and injection of radioactivity. This standard model has been challenged by evidence for short cloud lifetimes and a highly ...
I. ASYMMETRY OF ECLIPSES. CALENDAR CYCLES
... may last up to more than 100 minutes. However, the total time between the Moon’s first and last contact with the Earth’s shadow is much longer, and could last up to 4 hours. In contrast to a solar eclipse, which can only be viewed from a certain relatively small area of the world, a lunar eclipse ma ...
... may last up to more than 100 minutes. However, the total time between the Moon’s first and last contact with the Earth’s shadow is much longer, and could last up to 4 hours. In contrast to a solar eclipse, which can only be viewed from a certain relatively small area of the world, a lunar eclipse ma ...
W. M. White Geochemistry Chapter 10: Cosmochemistry
... the cosmos by looking at old stars. The old stars of Population II are considerably poorer in heavy elements than are young stars. In particular, Population II stars have a Fe/H ratio typically a factor of 100 lower than the Sun. This suggests that much of the heavy element inventory of the galaxy h ...
... the cosmos by looking at old stars. The old stars of Population II are considerably poorer in heavy elements than are young stars. In particular, Population II stars have a Fe/H ratio typically a factor of 100 lower than the Sun. This suggests that much of the heavy element inventory of the galaxy h ...
Astronomical Circumstances
... (all other things being equal). This being the case, mass. For our purposes, we are going to use mass as around all stars there is a distant zone in space where our basis of stellar comparison. the star’s radiation levels would cause the surface of an Earthlike planet to be not too cold for liquid ...
... (all other things being equal). This being the case, mass. For our purposes, we are going to use mass as around all stars there is a distant zone in space where our basis of stellar comparison. the star’s radiation levels would cause the surface of an Earthlike planet to be not too cold for liquid ...
A S T R O N O M Y 1 1 0 - the Home Page for Voyager2.DVC.edu.
... to the same units to see which is larger. On the other hand, the mass of the auto, or the surface area are different from one another and different from the length or height. They cannot be compared directly. They need to be in the same units. ...
... to the same units to see which is larger. On the other hand, the mass of the auto, or the surface area are different from one another and different from the length or height. They cannot be compared directly. They need to be in the same units. ...
Formation of the Solar System
... © 2007 Pearson Education Inc., publishing as Pearson Addison-Wesley ...
... © 2007 Pearson Education Inc., publishing as Pearson Addison-Wesley ...
The Physics of Star Formation: Understanding the Youngest Protostars
... events which lead to Class I YSOs { remain highly enigmatic. In recent years, several protostars in the earliest stage of assembly have been discovered. Known as \Class 0" objects (Andre et al. 1993), many were initially identi ed from their powerful and highly collimated jets which were found to b ...
... events which lead to Class I YSOs { remain highly enigmatic. In recent years, several protostars in the earliest stage of assembly have been discovered. Known as \Class 0" objects (Andre et al. 1993), many were initially identi ed from their powerful and highly collimated jets which were found to b ...
lecture04_2014_geo_heliocentric_theory
... © 2005 Pearson Education Inc., publishing as Addison-Wesley ...
... © 2005 Pearson Education Inc., publishing as Addison-Wesley ...
How we think the planets were born
... “There is an infinite number of worlds, some like this world, some unlike it… For the atoms out of which a world might arise, or by which a world might be formed, have not all been expended on one world or a finite number of worlds, whether like or unlike this one. Hence there will be nothing to hin ...
... “There is an infinite number of worlds, some like this world, some unlike it… For the atoms out of which a world might arise, or by which a world might be formed, have not all been expended on one world or a finite number of worlds, whether like or unlike this one. Hence there will be nothing to hin ...
ATLAS lifts the Cup: discovery of a new Milky Way satellite in Crater⋆†
... We announce the discovery of a new Galactic companion found in data from the ESO VST ATLAS survey, and followed up with deep imaging on the 4-m William Herschel Telescope. The satellite is located in the constellation of Crater (the Cup) at a distance of ∼170 kpc. Its half-light radius is rh = 30 pc ...
... We announce the discovery of a new Galactic companion found in data from the ESO VST ATLAS survey, and followed up with deep imaging on the 4-m William Herschel Telescope. The satellite is located in the constellation of Crater (the Cup) at a distance of ∼170 kpc. Its half-light radius is rh = 30 pc ...
Sample pages 1 PDF
... reflect only about three times this amount, much like the lighter gray of a well-used road that hasn’t been paved in years. Our impression of the Moon as a brilliant disk stems in part from its contrast with the dark night sky and in part from the sensitivity of the human eye once it adapts to darkn ...
... reflect only about three times this amount, much like the lighter gray of a well-used road that hasn’t been paved in years. Our impression of the Moon as a brilliant disk stems in part from its contrast with the dark night sky and in part from the sensitivity of the human eye once it adapts to darkn ...
looking up! - Discover the universe
... • Moon: The Moon is the easiest object to observe in the night sky. Different phases can be observed during a 30-day cycle. It is also possible to observe lunar eclipses during the night, but these are rare. • Planets: Five planets are visible to the naked eye: Mercury, Venus, Mars, Jupiter and Sa ...
... • Moon: The Moon is the easiest object to observe in the night sky. Different phases can be observed during a 30-day cycle. It is also possible to observe lunar eclipses during the night, but these are rare. • Planets: Five planets are visible to the naked eye: Mercury, Venus, Mars, Jupiter and Sa ...
File - South Sevier High School
... more slowly. And an object at the distance of the Sun traveling at the same speed and moving across the sky would appear to be going nearly a hundred million times more slowly than the plane overhead. The stars (other than the Sun) are all more than 40 trillion kilometers (25 trillion miles) from us ...
... more slowly. And an object at the distance of the Sun traveling at the same speed and moving across the sky would appear to be going nearly a hundred million times more slowly than the plane overhead. The stars (other than the Sun) are all more than 40 trillion kilometers (25 trillion miles) from us ...
Chapter 13 Lecture
... Recall: Kepler’s Second Law of Planetary Motion 2. A line drawn between the sun and a planet sweeps out equal areas during equal intervals of time. The gravitational force exerts no torque, so the satellite’s angular momentum, L, is conserved as it orbits. It can be shown that the area swept ou ...
... Recall: Kepler’s Second Law of Planetary Motion 2. A line drawn between the sun and a planet sweeps out equal areas during equal intervals of time. The gravitational force exerts no torque, so the satellite’s angular momentum, L, is conserved as it orbits. It can be shown that the area swept ou ...
What are Jupiter and its moons like? - Harvard
... your images: How large is Jupiter, compared to Earth? How far from Jupiter is its moon Europa? How long does it take Europa to orbit Jupiter once? The third part of your challenge is to use your measurements, and your knowledge of physics, to calculate: How much would you weigh on Jupiter’s surface, ...
... your images: How large is Jupiter, compared to Earth? How far from Jupiter is its moon Europa? How long does it take Europa to orbit Jupiter once? The third part of your challenge is to use your measurements, and your knowledge of physics, to calculate: How much would you weigh on Jupiter’s surface, ...
Relativistic stellar aberration for the Space Interferometry Mission
... correct treatment of the dynamics of the extended celestial bodies. As a result, some of the leading static-field post-Newtonian perturbations in the dynamics of the planets, the Moon and artificial satellites have been included in the equations of motion, and in time and position transformation. Du ...
... correct treatment of the dynamics of the extended celestial bodies. As a result, some of the leading static-field post-Newtonian perturbations in the dynamics of the planets, the Moon and artificial satellites have been included in the equations of motion, and in time and position transformation. Du ...
Science drivers for GLAO at LBT
... like Oph, combining our study with that of Upper Sco by Bouy et al. 2006 we estimate 6+/-3% of young VLM objects are in such wide systems. ...
... like Oph, combining our study with that of Upper Sco by Bouy et al. 2006 we estimate 6+/-3% of young VLM objects are in such wide systems. ...
A Reminder of the Policy on Collaboration: We allow and expect you
... seven heavenly bodies “wandering” among the stars on the celestial sphere. These seven heavenly bodies were the sun, the moon and the planets Mercury, Venus, Mars, Jupiter and Saturn. The outermost planets (Neptune, Uranus and Pluto) also “wander” but the ancients didn't know about them because you ...
... seven heavenly bodies “wandering” among the stars on the celestial sphere. These seven heavenly bodies were the sun, the moon and the planets Mercury, Venus, Mars, Jupiter and Saturn. The outermost planets (Neptune, Uranus and Pluto) also “wander” but the ancients didn't know about them because you ...
Recent Measurements of Millisecond Pulsar Masses
... in the last 10 years, with the discovery of more than 100 new objects. • An increasing number of MSPs is being found in eccentric binary systems. • Timing campaigns are now determining post-Keplerian parameters for some of these orbits, constraining the masses of the components in these binaries. • ...
... in the last 10 years, with the discovery of more than 100 new objects. • An increasing number of MSPs is being found in eccentric binary systems. • Timing campaigns are now determining post-Keplerian parameters for some of these orbits, constraining the masses of the components in these binaries. • ...
Earth, moon and sun
... the diagram below. The horizontal lines show heat rays from the sun hitting the curved surface of the Earth. Count the rays that hit each area. From this you can see that the more a surface is tilted away from the sun, the fewer rays hit it and therefore the cooler it is. ...
... the diagram below. The horizontal lines show heat rays from the sun hitting the curved surface of the Earth. Count the rays that hit each area. From this you can see that the more a surface is tilted away from the sun, the fewer rays hit it and therefore the cooler it is. ...
The Moon Tilt Illusion - Penn Engineering
... high in the sky and the sun had set in the west one hour before this photo was taken. The moon is 45◦ above the horizon in the southeast, 80% illuminated by light from the sun striking the moon at an angle of 17◦ above the horizontal, as shown by the arrow drawn on the photograph. Our intuition (i.e ...
... high in the sky and the sun had set in the west one hour before this photo was taken. The moon is 45◦ above the horizon in the southeast, 80% illuminated by light from the sun striking the moon at an angle of 17◦ above the horizontal, as shown by the arrow drawn on the photograph. Our intuition (i.e ...
Astronomical Facts `n Stuff
... in degrees for this event. If this figure is omitted, the satellite is visible straight from the horizon. Appulse The apparent close approach of two celestial bodies as seen from Earth, such as a star and a planet, or two planets for example. Apsides Bodies in an elliptical orbit all reach a point w ...
... in degrees for this event. If this figure is omitted, the satellite is visible straight from the horizon. Appulse The apparent close approach of two celestial bodies as seen from Earth, such as a star and a planet, or two planets for example. Apsides Bodies in an elliptical orbit all reach a point w ...
oC - Geogreenapps
... the large maps to be in view, as on pages 32 and 201; but these cases are rare. As the large and small maps are the same, if the text is adapted to one, it must be to both. The diagrams are inserted where they are first referred to, and are made to face the right, so as to be easily kept in view whi ...
... the large maps to be in view, as on pages 32 and 201; but these cases are rare. As the large and small maps are the same, if the text is adapted to one, it must be to both. The diagrams are inserted where they are first referred to, and are made to face the right, so as to be easily kept in view whi ...
Satellite system (astronomy)
A satellite system is a set of gravitationally bound objects in orbit around a planetary mass object or minor planet. Generally speaking, it is a set of natural satellites (moons), although such systems may also consist of bodies such as circumplanetary disks, ring systems, moonlets, minor-planet moons and artificial satellites any of which may themselves have satellite systems of their own. Some satellite systems have complex interactions with both their parent and other moons, including magnetic, tidal, atmospheric and orbital interactions such as orbital resonances and libration. Individually major satellite objects are designated in Roman numerals. Satellite systems are referred to either by the possessive adjectives of their primary (e.g. ""Jovian system""), or less commonly by the name of their primary (e.g. ""Jupiter system""). Where only one satellite is known, or it is a binary orbiting a common centre of gravity, it may be referred to using the hyphenated names of the primary and major satellite (e.g. the ""Earth-Moon system"").Many Solar System objects are known to possess satellite systems, though their origin is still unclear. Notable examples include the largest satellite system, the Jovian system, with 67 known moons (including the large Galilean moons) and the Saturnian System with 62 known moons (and the most visible ring system in the Solar System). Both satellite systems are large and diverse. In fact all of the giant planets of the Solar System possess large satellite systems as well as planetary rings, and it is inferred that this is a general pattern. Several objects farther from the Sun also have satellite systems consisting of multiple moons, including the complex Plutonian system where multiple objects orbit a common center of mass, as well as many asteroids and plutinos. Apart from the Earth-Moon system and Mars' system of two tiny natural satellites, the other terrestrial planets are generally not considered satellite systems, although some have been orbited by artificial satellites originating from Earth.Little is known of satellite systems beyond the Solar System, although it is inferred that natural satellites are common. J1407b is an example of an extrasolar satellite system. It is also theorised that Rogue planets ejected from their planetary system could retain a system of satellites.