Effects of Mutual Transits by Extrasolar Planet
... We have the expected events n for observing NS stars during Tobs as n = f pNS . Therefore, monitoring 105 stars for three years with Kepler may lead to a discovery of a second EarthMoon-like system if the fraction is larger than 0.05, or it may put upper limits on the fraction as f < (pNS )−1 ∼ 0.05 ...
... We have the expected events n for observing NS stars during Tobs as n = f pNS . Therefore, monitoring 105 stars for three years with Kepler may lead to a discovery of a second EarthMoon-like system if the fraction is larger than 0.05, or it may put upper limits on the fraction as f < (pNS )−1 ∼ 0.05 ...
Finding habitable earths around white dwarfs with a robotic
... important impact on the detectability of these planets: a transit survey of nearby white dwarfs should be biased towards detecting planets in or near the WDHZ. If they are distributed at a range of orbital separations, a, down to a > ain ≈ 2aR , then the closest planets have the highest probability ...
... important impact on the detectability of these planets: a transit survey of nearby white dwarfs should be biased towards detecting planets in or near the WDHZ. If they are distributed at a range of orbital separations, a, down to a > ain ≈ 2aR , then the closest planets have the highest probability ...
Planet Building Part 4
... Jovian Problem – The results of the runs show that the rotating gas and dust of a solar nebula could have become unstable and formed Jovian planets by direct collapse. – Instead of forming a dense core through condensation and accretion of sold materials, the formation of Jovian planets would have ...
... Jovian Problem – The results of the runs show that the rotating gas and dust of a solar nebula could have become unstable and formed Jovian planets by direct collapse. – Instead of forming a dense core through condensation and accretion of sold materials, the formation of Jovian planets would have ...
Why there are apparently so few debris disks among post
... Following the popular coagulation of dust theory of planetary formation, planets are formed inside disks around young stars. Initial disks contain gas and dust where dust is formed by micrometric sized particles radiating mainly in the far-IR. This is at least the case of Classical T Tauri stars (CT ...
... Following the popular coagulation of dust theory of planetary formation, planets are formed inside disks around young stars. Initial disks contain gas and dust where dust is formed by micrometric sized particles radiating mainly in the far-IR. This is at least the case of Classical T Tauri stars (CT ...
Compilation of a Glossary of International Terms Related to
... various dimensions and origins (e.g., steep or shallow slopes, long or short lengths). These two examples illustrate that some commonly used terms can imply an origin (craters are most often assumed to be of impact origin), whereas other terms are specifically intended not to imply an origin (e.g., ...
... various dimensions and origins (e.g., steep or shallow slopes, long or short lengths). These two examples illustrate that some commonly used terms can imply an origin (craters are most often assumed to be of impact origin), whereas other terms are specifically intended not to imply an origin (e.g., ...
PLANETS
... al. 2000; Hillenbrand 2005). In the absence of gas drag, a 10 m sized dust grain from the primordial, proto–planetary nebula cannot survive longer than 1 Myr within 10 AU of a star due to a number of clearing processes, such as sublimation, radiation pressure, Poynting-Robertson, and stellar wind dr ...
... al. 2000; Hillenbrand 2005). In the absence of gas drag, a 10 m sized dust grain from the primordial, proto–planetary nebula cannot survive longer than 1 Myr within 10 AU of a star due to a number of clearing processes, such as sublimation, radiation pressure, Poynting-Robertson, and stellar wind dr ...
02-Physics
... atomic clouds. The emission is produced from the ground state of neutral hydrogen where the electron spin axis can be aligned parallel or anti-parallel to the proton’s spin axis. When the electron is parallel it is in a higher energy state than when anti-parallel. Mild inter-atomic impacts knock an ...
... atomic clouds. The emission is produced from the ground state of neutral hydrogen where the electron spin axis can be aligned parallel or anti-parallel to the proton’s spin axis. When the electron is parallel it is in a higher energy state than when anti-parallel. Mild inter-atomic impacts knock an ...
The Detection and Characterization of Extrasolar Planets
... complications. In particular, false positives are very common and quite difficult to identify [10]. Such false positive can include grazing eclipses from a stellar companion, transits of sub-stellar objects with radii similar to that of a giant planet and distant binary star systems whose angular se ...
... complications. In particular, false positives are very common and quite difficult to identify [10]. Such false positive can include grazing eclipses from a stellar companion, transits of sub-stellar objects with radii similar to that of a giant planet and distant binary star systems whose angular se ...
The Origin of Comets and the Oort Cloud
... 2. Some early cometary observations are quoted by Olivier (in “Comets”, 1930). Thus, on a Bablyonian tablet dated around 1140 BC and referring to a military campaign, we read: “a comet arose whose body was bright like the day, while from its luminous body a tail extended, like the sting of a scorpio ...
... 2. Some early cometary observations are quoted by Olivier (in “Comets”, 1930). Thus, on a Bablyonian tablet dated around 1140 BC and referring to a military campaign, we read: “a comet arose whose body was bright like the day, while from its luminous body a tail extended, like the sting of a scorpio ...
The absence of CO from the dust peak around ϵ Eri
... Assuming that the gas and dust are thermalized with an equilibrium temperature of 35 K (Dent et al. 2000), the formalism of Knapp et al. (1980) allows the conversion of the observed 3σ upper limit of 0.0156 K km s−1 (in units of T mb now) into a column density of CO molecules of 8.7 × 1011 cm−2 , im ...
... Assuming that the gas and dust are thermalized with an equilibrium temperature of 35 K (Dent et al. 2000), the formalism of Knapp et al. (1980) allows the conversion of the observed 3σ upper limit of 0.0156 K km s−1 (in units of T mb now) into a column density of CO molecules of 8.7 × 1011 cm−2 , im ...
2.4 Statistical properties of radial velocity planets
... The most basic statistical quantity of planet search programs is the fraction of detected planets for the surveyed stars. Giant planets around late type stars. For giant planets around single late type F, G, K main-sequence stars the RV velocity surveys find the following numbers: – for about 1 % of ...
... The most basic statistical quantity of planet search programs is the fraction of detected planets for the surveyed stars. Giant planets around late type stars. For giant planets around single late type F, G, K main-sequence stars the RV velocity surveys find the following numbers: – for about 1 % of ...
Communication with Extraterrestrial Intelligence (CETI)
... atmosphere of any terrestrial planet imaged in orbit around nearby stars. Transiting hot Jupiters have already permitted the first analysis of chemical constituents of exoplanet atmospheres. Observations of HD 209458b reveal sodium, hydrogen, oxygen, and carbon in an extended atmosphere and/or escapi ...
... atmosphere of any terrestrial planet imaged in orbit around nearby stars. Transiting hot Jupiters have already permitted the first analysis of chemical constituents of exoplanet atmospheres. Observations of HD 209458b reveal sodium, hydrogen, oxygen, and carbon in an extended atmosphere and/or escapi ...
On the correlation between stellar chromospheric flux and the
... mosphere induced by magnetic heating that is localized close to the footpoints of the long loop (cf. Lanza et al. 2001, and references therein). Rapidly rotating late-type stars such as AB Dor show signatures of condensations absorbing in Hα, that are located a few stellar radii above the surface (C ...
... mosphere induced by magnetic heating that is localized close to the footpoints of the long loop (cf. Lanza et al. 2001, and references therein). Rapidly rotating late-type stars such as AB Dor show signatures of condensations absorbing in Hα, that are located a few stellar radii above the surface (C ...
Planets
... Metallic hydrogen mantle is superconducting which is thought to circulate magnetodynamo currents to flow without resistance and generate Jupiter’s enormous magnetic field ...
... Metallic hydrogen mantle is superconducting which is thought to circulate magnetodynamo currents to flow without resistance and generate Jupiter’s enormous magnetic field ...
What is a planet? - X-ray and Observational Astronomy Group
... • Sudden change in disc properties could be achieved by cooling or by a dynamical interaction. • Simulations show a large number of planets form from a single disc. • Only produces gaseous planets – rocky (terrestrial) planets are not formed. • Is not applicable to the solar system. ...
... • Sudden change in disc properties could be achieved by cooling or by a dynamical interaction. • Simulations show a large number of planets form from a single disc. • Only produces gaseous planets – rocky (terrestrial) planets are not formed. • Is not applicable to the solar system. ...
Chap1-Introduction - Groupe d`astrophysique de UdeM
... • Low-mass planets appear to be very common. ...
... • Low-mass planets appear to be very common. ...
OORT CLOUD EXPLORER - DYNAMIC OCCULTATION
... The Oort cloud is that region of the solar system that extends radial from the zone where gravitational forces from galactic tides and stellar fly-bys of the forming solar system start to dominate the motions of solar system objects (around 2,000 AU from the Sun) to the zone where passing stars and ...
... The Oort cloud is that region of the solar system that extends radial from the zone where gravitational forces from galactic tides and stellar fly-bys of the forming solar system start to dominate the motions of solar system objects (around 2,000 AU from the Sun) to the zone where passing stars and ...
Characterization of the four new transiting planets KOI
... The characterization of four new transiting extrasolar planets is presented here. KOI-188b and KOI-195b are bloated hot Saturns, with orbital periods of 3.8 and 3.2 days, and masses of 0.25 and 0.34 MJup . They are located in the low-mass range of known transiting, giant planets. KOI-192b has a simi ...
... The characterization of four new transiting extrasolar planets is presented here. KOI-188b and KOI-195b are bloated hot Saturns, with orbital periods of 3.8 and 3.2 days, and masses of 0.25 and 0.34 MJup . They are located in the low-mass range of known transiting, giant planets. KOI-192b has a simi ...
A Theory of the Origin of the Solar System There have been
... condenses into a number of small grains and these are later accreted by the gravitational attraction of a growing embryo. Formation of the planetary bodies by particle agglomeration has been described in different ways by Schmidt (34), Alfven ( 5 ), Marcus (30) and Giuli (10). Hence irrespective of ...
... condenses into a number of small grains and these are later accreted by the gravitational attraction of a growing embryo. Formation of the planetary bodies by particle agglomeration has been described in different ways by Schmidt (34), Alfven ( 5 ), Marcus (30) and Giuli (10). Hence irrespective of ...
Lecture13.v1
... gravity strongly perturbed the orbits of almost all the asteroids • Most of them got nudged into highly eccentric orbits, from which they either leave the Solar System or head inwards toward the Sun • A fraction of the asteroids headed inwards may have hit the early Earth! Page 19 ...
... gravity strongly perturbed the orbits of almost all the asteroids • Most of them got nudged into highly eccentric orbits, from which they either leave the Solar System or head inwards toward the Sun • A fraction of the asteroids headed inwards may have hit the early Earth! Page 19 ...
EASTERN ARIZONA COLLEGE Lab - Introduction to Astronomy
... learner can specify the differences and similarities among the meteoroids, asteroids, comets and small bodies within our solar system ...
... learner can specify the differences and similarities among the meteoroids, asteroids, comets and small bodies within our solar system ...
student instruction and answer sheet
... have planets or planet systems around them. Recent discoveries of numerous extrasolar planets suggest that most stars like our Sun probably have planets. ne –This number represents how many "earth-like planets" there are at the right temperature for liquid water to exist (i.e. in the habitable zone) ...
... have planets or planet systems around them. Recent discoveries of numerous extrasolar planets suggest that most stars like our Sun probably have planets. ne –This number represents how many "earth-like planets" there are at the right temperature for liquid water to exist (i.e. in the habitable zone) ...
The Story of Planet Building
... Building Task: Create a book that illustrates the story of how our solar system formed. Guidelines & Expectations ___/2 pts.-Title page that includes a title and your name ___/2 pts.- Minimum of 8 pages ___/6 pts.- Book is in correct chronological order ___/6 pts.- All significant steps in the forma ...
... Building Task: Create a book that illustrates the story of how our solar system formed. Guidelines & Expectations ___/2 pts.-Title page that includes a title and your name ___/2 pts.- Minimum of 8 pages ___/6 pts.- Book is in correct chronological order ___/6 pts.- All significant steps in the forma ...
Trading Cards
... When Comet Halley is at its farthest distance from the Sun, it is 3.3 billion miles away. Long-period comets (comets with orbits longer than 200 years) are found in the Oort Cloud. Its range is from 465,000,000,000 miles to 9,300,000,000,000 miles (9.3 trillion miles). Comets are sometimes called ...
... When Comet Halley is at its farthest distance from the Sun, it is 3.3 billion miles away. Long-period comets (comets with orbits longer than 200 years) are found in the Oort Cloud. Its range is from 465,000,000,000 miles to 9,300,000,000,000 miles (9.3 trillion miles). Comets are sometimes called ...
Astrophysical Conditions for Planetary Habitability - Max
... HITRAN database by including many more weak absorption lines, including some that extend all the way down to near-UV wavelengths. They furthermore included a new formulation of the water vapor continuum by Paynter and Ramaswamy (2011). This causes the albedo of an H2 O-rich atmosphere to be substant ...
... HITRAN database by including many more weak absorption lines, including some that extend all the way down to near-UV wavelengths. They furthermore included a new formulation of the water vapor continuum by Paynter and Ramaswamy (2011). This causes the albedo of an H2 O-rich atmosphere to be substant ...