Axisymmetric Simulations of Hot Jupiter
... atoms depends on the density of cold planetary gas at the position of the contact discontinuity with the stellar wind. For instance, it is possible that optical depth τ ∼ 1 for the hot population would imply τ ≫ 1 for the cold population, and the model transit depth would overestimate the observed t ...
... atoms depends on the density of cold planetary gas at the position of the contact discontinuity with the stellar wind. For instance, it is possible that optical depth τ ∼ 1 for the hot population would imply τ ≫ 1 for the cold population, and the model transit depth would overestimate the observed t ...
Planetary Systems and Planets in Systems (pdf file 10.5
... about brown dwarfs and possible “sub-stellar” objects in the title of their proposal. The historical discovery of the first extra-solar planet around 51 Pegasi in 1995 by Michel and Didier immediately had a great impact in the astronomical community and by the public as well. As often in Switzerland ...
... about brown dwarfs and possible “sub-stellar” objects in the title of their proposal. The historical discovery of the first extra-solar planet around 51 Pegasi in 1995 by Michel and Didier immediately had a great impact in the astronomical community and by the public as well. As often in Switzerland ...
Elementary Astronomy - MavDISK - Minnesota State University
... astronomy is the basis for such activities as time-keeping, navigation, and picking out constellations while camping under the stars. But astronomy is important for another reason: it fascinates people – even those who know very little about it. Children especially, are eager to learn about planets ...
... astronomy is the basis for such activities as time-keeping, navigation, and picking out constellations while camping under the stars. But astronomy is important for another reason: it fascinates people – even those who know very little about it. Children especially, are eager to learn about planets ...
“Xena:” The Tenth Planet?
... smaller object also can appear bright if the material on its surface reflects most of the light that strikes it, like blinding sunlight from newly fallen snow. Astronomers found that Xena is very bright because it reflects lots of ...
... smaller object also can appear bright if the material on its surface reflects most of the light that strikes it, like blinding sunlight from newly fallen snow. Astronomers found that Xena is very bright because it reflects lots of ...
Planet Pluto
... Pluto’s facts • Pluto is the second largest known dwarf planet. • Pluto is also the tenth largest dwarf planet orbiting the sun. • From 1930 to 2006 Pluto was considered a planet, but now they really consider it a dwarf star. • Pluto’s average density is about 1.8 and 2.1 grams per cubic ...
... Pluto’s facts • Pluto is the second largest known dwarf planet. • Pluto is also the tenth largest dwarf planet orbiting the sun. • From 1930 to 2006 Pluto was considered a planet, but now they really consider it a dwarf star. • Pluto’s average density is about 1.8 and 2.1 grams per cubic ...
On the potential of the EChO mission to characterize gas giant
... obtained for all of these cases. We fix the temperature profile and bulk H2 –He composition of the planet’s atmosphere, but allow the abundance of five trace gas species H2 O, CO2 , CO, CH4 and NH3 to vary independently of each other over the concentration range 0.1–1000 ppmv. The retrievability of ...
... obtained for all of these cases. We fix the temperature profile and bulk H2 –He composition of the planet’s atmosphere, but allow the abundance of five trace gas species H2 O, CO2 , CO, CH4 and NH3 to vary independently of each other over the concentration range 0.1–1000 ppmv. The retrievability of ...
Insights into planet formation from debris disks: II. Giant impacts in
... The majority of the processes that contribute to the formation of a planetary system are thought to take place in the massive circumstellar disks that surround young stars called protoplanetary disks. Such disks last for up to around 10 Myr before dispersing through mechanisms that are still debated ...
... The majority of the processes that contribute to the formation of a planetary system are thought to take place in the massive circumstellar disks that surround young stars called protoplanetary disks. Such disks last for up to around 10 Myr before dispersing through mechanisms that are still debated ...
Structure and Evolution of Gas and Dust in Inner
... focus on the inner ~5 AU of protoplanetary disks: accretion indicators to probe gas content at star-disk interface infrared continuum excess at <24 micron to probe warm dust in the planet formation region of disks identify and characterize disks in the process of being cleared out ...
... focus on the inner ~5 AU of protoplanetary disks: accretion indicators to probe gas content at star-disk interface infrared continuum excess at <24 micron to probe warm dust in the planet formation region of disks identify and characterize disks in the process of being cleared out ...
ApplicationOfJeevaSa.. - Saptarishis Astrology
... If the lord of the 9th house occupy the Ascendant and be aspected by Jupiter, the native will command the respect of the sovereign. If the lord of the 9th house be posited in the 11th, the native will be respected by kings, have long life and will also be virtuously disposed. “A person gets wealth i ...
... If the lord of the 9th house occupy the Ascendant and be aspected by Jupiter, the native will command the respect of the sovereign. If the lord of the 9th house be posited in the 11th, the native will be respected by kings, have long life and will also be virtuously disposed. “A person gets wealth i ...
The detectability of extrasolar planet surroundings - I. Reflected
... edge of the Saturn A ring. In the absence of resonances, and depending on the ring viscosity, the confinement is, for a satellite mass MS and distance to the planet dS , proportional to MS2 /dS4 (Borderies et al. 1982). In this sense, the detection of rings can be considered as an indirect detection ...
... edge of the Saturn A ring. In the absence of resonances, and depending on the ring viscosity, the confinement is, for a satellite mass MS and distance to the planet dS , proportional to MS2 /dS4 (Borderies et al. 1982). In this sense, the detection of rings can be considered as an indirect detection ...
Detecting Extrasolar Moons akin to Solar System Satellites with an
... shall be satellite number s, and its orbital semi-major axis around the planet be aps .4 Imagine further looking at the system from a top view position, such that the satellite’s apparent path around the planet forms a circle. With a given, but arbitrary sampling frequency you take snapshots of the ...
... shall be satellite number s, and its orbital semi-major axis around the planet be aps .4 Imagine further looking at the system from a top view position, such that the satellite’s apparent path around the planet forms a circle. With a given, but arbitrary sampling frequency you take snapshots of the ...
Jupiter and Saturn: Lords of the Planets
... helium gas forms droplets and falls deeper into the planet – Jupiter’s temperature is relatively warmer (-108°C at cloud-top), helium does not form rain droplets. ...
... helium gas forms droplets and falls deeper into the planet – Jupiter’s temperature is relatively warmer (-108°C at cloud-top), helium does not form rain droplets. ...
Document
... helium gas forms droplets and falls deeper into the planet – Jupiter’s temperature is relatively warmer (-108°C at cloud-top), helium does not form rain droplets. ...
... helium gas forms droplets and falls deeper into the planet – Jupiter’s temperature is relatively warmer (-108°C at cloud-top), helium does not form rain droplets. ...
Dissertation in Astronomy submitted to the Combined
... – observed by the Kepler telescope – was initiated to unveil a population of close-in planets (a < 0.5 au) that have been undetected by previous RV surveys. This e↵ort led to the confirmation of the planetary nature of two close-in planets, Kepler-432 b and Kepler-91 b, providing evidence that short ...
... – observed by the Kepler telescope – was initiated to unveil a population of close-in planets (a < 0.5 au) that have been undetected by previous RV surveys. This e↵ort led to the confirmation of the planetary nature of two close-in planets, Kepler-432 b and Kepler-91 b, providing evidence that short ...
Characterization of exoplanetary systems with the direct
... In the year of the 20th anniversary of the discovery of the first extrasolar planet we can count more than 1800 companions found with different techniques. The majority of them are indirect methods that infer the presence of an orbiting body by observing the parent star (radial velocity, transits, a ...
... In the year of the 20th anniversary of the discovery of the first extrasolar planet we can count more than 1800 companions found with different techniques. The majority of them are indirect methods that infer the presence of an orbiting body by observing the parent star (radial velocity, transits, a ...
Uranus ppt
... Astronomers think Uranus was hit by a really big 'planetessimal' soon after the solar system was formed, but before its moons were born. The thing that hit it put matter in orbit around the new tilted Uranus so that the moons could eventually form out of this ejected material left over from the coll ...
... Astronomers think Uranus was hit by a really big 'planetessimal' soon after the solar system was formed, but before its moons were born. The thing that hit it put matter in orbit around the new tilted Uranus so that the moons could eventually form out of this ejected material left over from the coll ...
Article PDF - IOPscience
... of its outer disk is roughly elliptical, and composed of an overlapping set of spiral arm segments. We confirm that the star is offset by 0. 17 ± 0. 02 from the centroid of the cavity. No companion is detected in the range of 14–35 AU, with a lower limit MK > 8.2 at 3σ (for a distance of 140 pc) ...
... of its outer disk is roughly elliptical, and composed of an overlapping set of spiral arm segments. We confirm that the star is offset by 0. 17 ± 0. 02 from the centroid of the cavity. No companion is detected in the range of 14–35 AU, with a lower limit MK > 8.2 at 3σ (for a distance of 140 pc) ...
Predicting low-frequency radio fluxes of known extrasolar planets
... of proportionality implied in the relations given below are not well known, see Zarka et al. 2001b), so that both models have to be considered. c) For unmagnetised or weakly magnetised planets, one may apply the unipolar interaction model. In this model, the star-planet system can be seen as a giant ...
... of proportionality implied in the relations given below are not well known, see Zarka et al. 2001b), so that both models have to be considered. c) For unmagnetised or weakly magnetised planets, one may apply the unipolar interaction model. In this model, the star-planet system can be seen as a giant ...
Extra-solar planets
... orbits the Sun (0.39 AU). While the Doppler technique preferentially selects systems in tight orbits, giant planets so close to the parent star were generally unexpected. Theoretical progress in understanding their formation and their properties has been rapid, but it remains far from complete. ‡ Ba ...
... orbits the Sun (0.39 AU). While the Doppler technique preferentially selects systems in tight orbits, giant planets so close to the parent star were generally unexpected. Theoretical progress in understanding their formation and their properties has been rapid, but it remains far from complete. ‡ Ba ...
Learn all about Pluto, the most famous dwarf planet
... Pluto is a tiny world, but like the Moon and Mercury it does have a very tenuous atmosphere that is called an "exosphere." Astronomers first spotted As with our own Moon, some scientists believe Charon was created after a large object smashed signs of it in 1985. As Pluto passed in front of a star, ...
... Pluto is a tiny world, but like the Moon and Mercury it does have a very tenuous atmosphere that is called an "exosphere." Astronomers first spotted As with our own Moon, some scientists believe Charon was created after a large object smashed signs of it in 1985. As Pluto passed in front of a star, ...
Extra-solar planets
... expected. More than one-third have significantly elliptical orbits, with e > 0.3, compared with the largest eccentricities in our solar system, of about 0.2 for Mercury and Pluto and 0.05 for Jupiter. Even more significantly, about two-thirds are orbiting their host star much closer than Mercury orb ...
... expected. More than one-third have significantly elliptical orbits, with e > 0.3, compared with the largest eccentricities in our solar system, of about 0.2 for Mercury and Pluto and 0.05 for Jupiter. Even more significantly, about two-thirds are orbiting their host star much closer than Mercury orb ...
Asteroids, Comets, Meteoroids
... A small, rocky object that orbits the sun. Most asteroids are located in the asteroid belt between Mars and Jupiter. (ever formed a planet!) > 50,000 have been discovered. ear-Earth asteroids (>1,000) are asteroids with a wide elliptical orbit that brings them close to Earth’s orbit. Many people t ...
... A small, rocky object that orbits the sun. Most asteroids are located in the asteroid belt between Mars and Jupiter. (ever formed a planet!) > 50,000 have been discovered. ear-Earth asteroids (>1,000) are asteroids with a wide elliptical orbit that brings them close to Earth’s orbit. Many people t ...
Simulations of two-planet systems through all phases of stellar
... Exoplanets have been observed at many stages of their host star’s life, including the main sequence (MS), subgiant and red giant branch stages. Also, polluted white dwarfs (WDs) likely represent dynamically active systems at late times. Here, we perform 3-body simulations which include realistic pos ...
... Exoplanets have been observed at many stages of their host star’s life, including the main sequence (MS), subgiant and red giant branch stages. Also, polluted white dwarfs (WDs) likely represent dynamically active systems at late times. Here, we perform 3-body simulations which include realistic pos ...
Super-Earth
A super-Earth is an extrasolar planet with a mass higher than Earth's, but substantially below the mass of the Solar System's ice giants Uranus and Neptune, which are 15 and 17 Earth masses respectively. The term super-Earth refers only to the mass of the planet, and does not imply anything about the surface conditions or habitability. The alternative term ""gas dwarfs"" may be more accurate for those at the higher end of the mass scale, as suggested by MIT professor Sara Seager, although mini-Neptunes is more common.