Determining the Origin of Inner Planetary System Debris Orbiting the
... To place estimated parent body masses into context we turn to the modeling work of Kenyon & Bromley (2006), in particular their simulation of the growth of terrestrial planets in an annular ring spanning 0.84-1.16 AU around a Solar-mass star. This ring is seeded with a parent planetesimal population ...
... To place estimated parent body masses into context we turn to the modeling work of Kenyon & Bromley (2006), in particular their simulation of the growth of terrestrial planets in an annular ring spanning 0.84-1.16 AU around a Solar-mass star. This ring is seeded with a parent planetesimal population ...
Fomalhaut b
... • 1984 : IRAS mission finds dust grains orbi)ng Fomalhaut, as well as other stars such as Epsilon Eridani, Vega, and Beta Pictoris • Resolved thermal emission shows a central hole (Holland et al. 1998) • Fomalhaut is nearby (7.7 pc). High proper mo)on (0.4”/yr). • Fomalhaut is a young, ma ...
... • 1984 : IRAS mission finds dust grains orbi)ng Fomalhaut, as well as other stars such as Epsilon Eridani, Vega, and Beta Pictoris • Resolved thermal emission shows a central hole (Holland et al. 1998) • Fomalhaut is nearby (7.7 pc). High proper mo)on (0.4”/yr). • Fomalhaut is a young, ma ...
Scientific requirements of ALMA, and its capabilities for key
... 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 resolution. Precise means representing within the noise level the sky brightness at all points where the brightness is greater than ...
... 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 resolution. Precise means representing within the noise level the sky brightness at all points where the brightness is greater than ...
ppt
... • Theory/lab: – Computers are now powerful enough to model the growth from dust to planets – Laboratory experiments measure sticking and collision properties of particles ...
... • Theory/lab: – Computers are now powerful enough to model the growth from dust to planets – Laboratory experiments measure sticking and collision properties of particles ...
Planets Around Other Stars
... • Result is a rapidly rotatting disk of gas and dust – Again, dust means rock Again, dust means rockks, metals and ices ks, metals and ices – at sufficient distance frrom the parent star, ...
... • Result is a rapidly rotatting disk of gas and dust – Again, dust means rock Again, dust means rockks, metals and ices ks, metals and ices – at sufficient distance frrom the parent star, ...
Birth of Stars and Planets
... • List and describe evidence from our solar system that supports that overview. • List and describe evidence from outside our solar system that supports that overview. • What is a nebula? • What is a protostar? • Name an excellent example of a star birth region. • Why are the Terrestrial planets den ...
... • List and describe evidence from our solar system that supports that overview. • List and describe evidence from outside our solar system that supports that overview. • What is a nebula? • What is a protostar? • Name an excellent example of a star birth region. • Why are the Terrestrial planets den ...
RV metric 2
... which could spectroscopically characterize their atmospheres or surfaces in reflected starlight. To help differentiate mission concepts, and to help develop reasonable scientific expectations, we propose a science metric for RV exoplanets. This metric is the estimated number of such planets detected ...
... which could spectroscopically characterize their atmospheres or surfaces in reflected starlight. To help differentiate mission concepts, and to help develop reasonable scientific expectations, we propose a science metric for RV exoplanets. This metric is the estimated number of such planets detected ...
Linking Asteroids and Meteorites through Reflectance Spectroscopy
... How did these Hot Jupiters get orbits so close to their stars? • Formed there – but most scientists feel that Jovian planets formed far from farther out • Migrated there - planet interacts with a disk of gas or planetesimals, gravitational forces cause the planet to spiral inward • Flung there – gr ...
... How did these Hot Jupiters get orbits so close to their stars? • Formed there – but most scientists feel that Jovian planets formed far from farther out • Migrated there - planet interacts with a disk of gas or planetesimals, gravitational forces cause the planet to spiral inward • Flung there – gr ...
The role of migration and planet-planet scattering in shaping
... time due to viscosity (→ mass accretion on the star) and photoevaporation. The local gas density decreases with time and when the planets (Jupiter and Saturn for example) begin to migrate outwards they may not go far out. In the GT model Jupiter and Saturn may not have enough time to return to their ...
... time due to viscosity (→ mass accretion on the star) and photoevaporation. The local gas density decreases with time and when the planets (Jupiter and Saturn for example) begin to migrate outwards they may not go far out. In the GT model Jupiter and Saturn may not have enough time to return to their ...
Document
... - Follow up brightest candidates with spectroscopy, looking for atmospheric signatures, habitability or life itself. - Will detect and characterize Earth-like planets around as many as 150 stars up to 15 pc away. ...
... - Follow up brightest candidates with spectroscopy, looking for atmospheric signatures, habitability or life itself. - Will detect and characterize Earth-like planets around as many as 150 stars up to 15 pc away. ...
XII. Astronomy: Exoplanets and the Celestial Sphere
... 2. Fortunately, we can now freely pursue this question, and we even have some clues regarding where specifically to search for signals from intelligent life. H. Let us now consider the celestial sphere. 1. Ancient astronomers in Egypt and elsewhere grouped the visible stars into constellations. a. T ...
... 2. Fortunately, we can now freely pursue this question, and we even have some clues regarding where specifically to search for signals from intelligent life. H. Let us now consider the celestial sphere. 1. Ancient astronomers in Egypt and elsewhere grouped the visible stars into constellations. a. T ...
What is a “Planet”?
... smaller ones around. Some are ejected from the system. There must be “lost” planets. This has also been suggested as a means of making brown dwarfs. ...
... smaller ones around. Some are ejected from the system. There must be “lost” planets. This has also been suggested as a means of making brown dwarfs. ...
Distribution and Properties of the ISM
... carrying mass and angular momentum. • Will act in absence of more efficient mechanisms • Very low Q might allow giant planet formation. – direct gravitational condensation proposed – may be impossible to get through intermediate Q regime though, due to efficient accretion there. – standard giant pla ...
... carrying mass and angular momentum. • Will act in absence of more efficient mechanisms • Very low Q might allow giant planet formation. – direct gravitational condensation proposed – may be impossible to get through intermediate Q regime though, due to efficient accretion there. – standard giant pla ...
From planetesimals to planetary systems: a hardles race
... PROs: Smooth grow of larger bodies Reliable collisional model Initial size distribution of any kind Robust (it does not depend much on initial parameters) It can overcome the 1-m catastrophe ...
... PROs: Smooth grow of larger bodies Reliable collisional model Initial size distribution of any kind Robust (it does not depend much on initial parameters) It can overcome the 1-m catastrophe ...
STUDY OF EXTRA SOLAR EXOPLANET SYSTEMS BY METHOD
... There are exoplanets that are much closer to their parent star than any planet in the Solar System is to the Sun, and there are also exoplanets that are much further from their star. Mercury, the closest planet to the Sun at 0.4 AU, takes 88 days for an orbit, but the smallest known orbits of exopla ...
... There are exoplanets that are much closer to their parent star than any planet in the Solar System is to the Sun, and there are also exoplanets that are much further from their star. Mercury, the closest planet to the Sun at 0.4 AU, takes 88 days for an orbit, but the smallest known orbits of exopla ...
TrES-1: The transiting planet of a bright K0V star
... bright companions closer than a radius of 2000 (basically the size of a STARE star image), which could produce a blend case. The AO observations in J and K helped to further constrain the possibility of a close companion, placing a secure limit of no stellar companions within 2 mags of the star, fur ...
... bright companions closer than a radius of 2000 (basically the size of a STARE star image), which could produce a blend case. The AO observations in J and K helped to further constrain the possibility of a close companion, placing a secure limit of no stellar companions within 2 mags of the star, fur ...
Debris Belts around Vega - Astronomical Society of the Pacific
... emission produced by the star itself, leaving the emission radiated by surrounding dust particles warmed by the star. ...
... emission produced by the star itself, leaving the emission radiated by surrounding dust particles warmed by the star. ...
Detecting planets via transits
... Results show that the hot Jupiters have densities of around 1 g cm-3 (1000 kg m-3) similar to water… and to the densities of Jupiter and Saturn. Demonstrates that the hot Jupiters are gas giants rather than very massive rocky planets. Puzzle: some (but not all) of the hot Jupiters have a radius that ...
... Results show that the hot Jupiters have densities of around 1 g cm-3 (1000 kg m-3) similar to water… and to the densities of Jupiter and Saturn. Demonstrates that the hot Jupiters are gas giants rather than very massive rocky planets. Puzzle: some (but not all) of the hot Jupiters have a radius that ...
Magnitude scale theory
... In our example if A appears to the observer to be brighter than B, and if we use m A to be the absolute magnitude (M) then its apparent magnitude (mB) is less and so its distance must be more than 10 pc. ...
... In our example if A appears to the observer to be brighter than B, and if we use m A to be the absolute magnitude (M) then its apparent magnitude (mB) is less and so its distance must be more than 10 pc. ...
SEEDS – Direct Imaging Survey for Exoplanets and Disks
... motion for GJ 758 B, but a following paper showed that the candidate companion “C” was actually a background star (Janson et al. 2011). It is likely a low-mass brown dwarf or a massive planet, and its separation from the star (29 AU) places it between the regions at which sub-stellar companions are ...
... motion for GJ 758 B, but a following paper showed that the candidate companion “C” was actually a background star (Janson et al. 2011). It is likely a low-mass brown dwarf or a massive planet, and its separation from the star (29 AU) places it between the regions at which sub-stellar companions are ...
MHD_of_Accretion_Disks
... Weakly Ionized Plasmas are found in several astrophysical objects such as in circumstellar,and protoplanetary Disks . Because gas clouds have difficulty getting rid of excess angular momentum during a phase of dynamical collapse, there is reason to believe that all stars form with some sort of (acc ...
... Weakly Ionized Plasmas are found in several astrophysical objects such as in circumstellar,and protoplanetary Disks . Because gas clouds have difficulty getting rid of excess angular momentum during a phase of dynamical collapse, there is reason to believe that all stars form with some sort of (acc ...
origin of solar system
... Nearest exo-planet? Proxima Centauri, the star nearest the sun, has a planetary system consisting of at least one planet. The new study analyzes and supplements earlier observations. These new measurements show that this planet, named Proxima Centauri b or simply Proxima b, has a mass close to that ...
... Nearest exo-planet? Proxima Centauri, the star nearest the sun, has a planetary system consisting of at least one planet. The new study analyzes and supplements earlier observations. These new measurements show that this planet, named Proxima Centauri b or simply Proxima b, has a mass close to that ...
The 100YSS Powerpoint presentation.
... Distance from the Sun Used multiple times for objects with multiple names. Semi-major axis of a planet (heliocentric coordinates) Projected separation of planet from its host Position angle Eccentricity Longitude of periastron Mean longitude at a given Epoch (all planets in a system) Mean anomaly at ...
... Distance from the Sun Used multiple times for objects with multiple names. Semi-major axis of a planet (heliocentric coordinates) Projected separation of planet from its host Position angle Eccentricity Longitude of periastron Mean longitude at a given Epoch (all planets in a system) Mean anomaly at ...
Beta Pictoris
Beta Pictoris (β Pic, β Pictoris) is the second brightest star in the constellation Pictor. It is located 63.4 light years from our solar system, and is 1.75 times as massive and 8.7 times as luminous as the Sun. The Beta Pictoris system is very young, only 8–20 million years old, although it is already in the main sequence stage of its evolution. Beta Pictoris is the title member of the Beta Pictoris moving group, an association of young stars which share the same motion through space and have the same age.Beta Pictoris shows an excess of infrared emission compared to normal stars of its type, which is caused by large quantities of dust and gas (including carbon monoxide) near the star. Detailed observations reveal a large disk of dust and gas orbiting the star, which was the first debris disk to be imaged around another star. In addition to the presence of several planetesimal belts and cometary activity, there are indications that planets have formed within this disk and that the processes of planet formation may still be ongoing. Material from the Beta Pictoris debris disk is thought to be the dominant source of interstellar meteoroids in our solar system.The European Southern Observatory (ESO) has confirmed the presence of a planet, Beta Pictoris b, matching previous predictions, through the use of direct imagery, orbiting in the plane of the debris disk surrounding the star. This planet is currently the closest extrasolar planet to its star ever photographed: the observed separation is roughly the same as the distance between Saturn and the Sun.