Constraints on a Chance Universe & The Anthropic Principle
... fp - the fraction of stars that have planets similar to Earth Based on the most recent successes in finding extrasolar planets orbiting distant stars, it would seem that the value of the first ½ of this factor would be rather high. Optimists placing its value at 1.0 and pessimists at 0.1 (about 10% ...
... fp - the fraction of stars that have planets similar to Earth Based on the most recent successes in finding extrasolar planets orbiting distant stars, it would seem that the value of the first ½ of this factor would be rather high. Optimists placing its value at 1.0 and pessimists at 0.1 (about 10% ...
Dawes Review. The tidal downsizing hypothesis of planet formation
... Kuiper’s top-down scenario of planet formation is therefore made plausible by planet migration; it was recently re-invented (Boley et al., 2010) and re-branded ”Tidal Downsizing” hypothesis (Nayakshin, 2010a). This review presents the main ideas behind the Tidal Downsizing scenario, recent theoretic ...
... Kuiper’s top-down scenario of planet formation is therefore made plausible by planet migration; it was recently re-invented (Boley et al., 2010) and re-branded ”Tidal Downsizing” hypothesis (Nayakshin, 2010a). This review presents the main ideas behind the Tidal Downsizing scenario, recent theoretic ...
Abiotic formation of O $\ mathsf {_2} $ and O $\ mathsf {_3} $ in high
... retain heavy gases but too small to maintain volcanic outgassing (Kasting 1997; Schindler & Kasting 2000). The frozen surface would inhibit the loss of oxygen by reaction with reduced minerals, whereas the lack of outgassing would eliminate reaction with reduced volcanic gases (primarily H2 ) as an ...
... retain heavy gases but too small to maintain volcanic outgassing (Kasting 1997; Schindler & Kasting 2000). The frozen surface would inhibit the loss of oxygen by reaction with reduced minerals, whereas the lack of outgassing would eliminate reaction with reduced volcanic gases (primarily H2 ) as an ...
Worlds Beyond: A Strategy for the Detection and Characterization of
... liquid water to support life as we know it are very close to the star. The relative size and mass of the planet and star are more favorable for planet detection than the Earth-Sun analog. Two different yet complementary planet searching techniques (transits and radial velocities) are very sensitive ...
... liquid water to support life as we know it are very close to the star. The relative size and mass of the planet and star are more favorable for planet detection than the Earth-Sun analog. Two different yet complementary planet searching techniques (transits and radial velocities) are very sensitive ...
Chap2-RadialVelocity
... Orbit specification. A Keplerian orbit in three dimension is described by the following seven parameters: : orbit inclination (i=0; face on) : longitude of the ascending node : argument of pericenter (measured in true orbital plane ...
... Orbit specification. A Keplerian orbit in three dimension is described by the following seven parameters: : orbit inclination (i=0; face on) : longitude of the ascending node : argument of pericenter (measured in true orbital plane ...
TWO NEW LONG-PERIOD GIANT PLANETS FROM THE
... Key words: planetary systems – stars: activity – techniques: radial velocities Supporting material: machine-readable tables The RV technique has been used to detect/discover ∼600 of the ∼2000 known, confirmed exoplanets. Since the technique is heavily biased toward massive planets in short-period orb ...
... Key words: planetary systems – stars: activity – techniques: radial velocities Supporting material: machine-readable tables The RV technique has been used to detect/discover ∼600 of the ∼2000 known, confirmed exoplanets. Since the technique is heavily biased toward massive planets in short-period orb ...
![arXiv:1502.03605v2 [astro-ph.EP] 24 Apr 2015](http://s1.studyres.com/store/data/017598977_1-7182fa8223b5ceaded332d6412cd3a07-300x300.png)
arXiv:1502.03605v2 [astro-ph.EP] 24 Apr 2015
... Bayesian analysis of Rogers & Seager (2010) exist, our approach nonetheless differs in several respects: – our inversion method is applicable to planets of any mantle composition and core structure; – our inversion method is general in that it can be easily adapted to more complex planetary models t ...
... Bayesian analysis of Rogers & Seager (2010) exist, our approach nonetheless differs in several respects: – our inversion method is applicable to planets of any mantle composition and core structure; – our inversion method is general in that it can be easily adapted to more complex planetary models t ...
Multiple scattering polarization
... objects whose effective temperature ranges between 2400 and 1300 K are considered to be L dwarfs. The L dwarfs which show clear signature of primordial Li in their spectra are brown dwarfs. The cooler objects that show methane in their spectra are known as T dwarfs or methane dwarfs and all T dwarfs ...
... objects whose effective temperature ranges between 2400 and 1300 K are considered to be L dwarfs. The L dwarfs which show clear signature of primordial Li in their spectra are brown dwarfs. The cooler objects that show methane in their spectra are known as T dwarfs or methane dwarfs and all T dwarfs ...
Planet Hunters: The First Two Planet Candidates Identified by the
... Star and Exoplanet Database (NStED2 ). Although there are more than 1200 Kepler candidates, only 1 − 2% of these are confirmed planets with measured masses from Doppler observations (Batalha et al. 2011; Borucki et al. 2010b). These are challenging confirmations. The Kepler stars are faint compared ...
... Star and Exoplanet Database (NStED2 ). Although there are more than 1200 Kepler candidates, only 1 − 2% of these are confirmed planets with measured masses from Doppler observations (Batalha et al. 2011; Borucki et al. 2010b). These are challenging confirmations. The Kepler stars are faint compared ...
SPIRou Science Case
... search for & characterize habitable exo-Earths orbiting low-mass & very-low mass stars (LMSs & vLMSs) using high-precision radial velocity (RV) measurements. This search will expand the initial, exploratory studies carried out with visible instruments (e.g., HARPS/ESO) and will survey in particular ...
... search for & characterize habitable exo-Earths orbiting low-mass & very-low mass stars (LMSs & vLMSs) using high-precision radial velocity (RV) measurements. This search will expand the initial, exploratory studies carried out with visible instruments (e.g., HARPS/ESO) and will survey in particular ...
TOPS: Toward Other Planetary
... more or less contemporaneously through a sequence of related and almost deterministic events, as the interior of a spinning interstellar cloud collapses under the influence of its own gravity. The spin of the collapsing matter forces some of the material to whirl about the center in a thin, disk-sha ...
... more or less contemporaneously through a sequence of related and almost deterministic events, as the interior of a spinning interstellar cloud collapses under the influence of its own gravity. The spin of the collapsing matter forces some of the material to whirl about the center in a thin, disk-sha ...
Kepler Mission
... the ecliptic plane in order for it to not be blocked by the Sun or Moon during its course. As the spacecraft orbits the Sun, it experiences a 90-degree turn every three months, the only movement the spacecraft actually undertakes, so that the solar panels can continue to face the Sun while the photo ...
... the ecliptic plane in order for it to not be blocked by the Sun or Moon during its course. As the spacecraft orbits the Sun, it experiences a 90-degree turn every three months, the only movement the spacecraft actually undertakes, so that the solar panels can continue to face the Sun while the photo ...
Direct Imaging Searches Around White Dwarfs - X
... • Latest results: a close WD+ Tdwarf binary in an open cluster • A transit survey of WDs with SuperWASP ...
... • Latest results: a close WD+ Tdwarf binary in an open cluster • A transit survey of WDs with SuperWASP ...
