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... The planet around g Cep is difficult to form and on the borderline of being impossible. Standard planet formation theory: Giant planets form beyond the snowline where the solid core can form. Once the core is formed the protoplanet accretes gas. It then migrates ...
... The planet around g Cep is difficult to form and on the borderline of being impossible. Standard planet formation theory: Giant planets form beyond the snowline where the solid core can form. Once the core is formed the protoplanet accretes gas. It then migrates ...
What stellar properties can be learnt from planetary transits?
... sizes of 3-6 104 km, being larger than regular sunspots, usually of the order of 11000 km (probably a group of starspots, similar to solar active regions). temperatures of 4900 - 5500 K, being hotter than regular sunspots (3800-4400K), however the surface temperature of HD 209458, 6000K, is also ...
... sizes of 3-6 104 km, being larger than regular sunspots, usually of the order of 11000 km (probably a group of starspots, similar to solar active regions). temperatures of 4900 - 5500 K, being hotter than regular sunspots (3800-4400K), however the surface temperature of HD 209458, 6000K, is also ...
Searching for Planets Around Other Stars
... These kinds of questions were unanswerable as long as the only planetary system we knew was our own. However, beginning in 1995, with the discovery of the first planet orbiting a star other than our Sun, we have received many new insights into these questions and many new ...
... These kinds of questions were unanswerable as long as the only planetary system we knew was our own. However, beginning in 1995, with the discovery of the first planet orbiting a star other than our Sun, we have received many new insights into these questions and many new ...
Searching for Planets Around Other Stars
... These kinds of questions were unanswerable as long as the only planetary system we knew was our own. However, beginning in 1995, with the discovery of the first planet orbiting a star other than our Sun, we have received many new insights into these questions and many new ...
... These kinds of questions were unanswerable as long as the only planetary system we knew was our own. However, beginning in 1995, with the discovery of the first planet orbiting a star other than our Sun, we have received many new insights into these questions and many new ...
High Resolution Spectroscopy of Stars with Planets
... – There are already 37 planets detected by transit in this year – Host stars are relatively faint, V ~ 10-15 – Magnitude limit of transit observations will be fainter ⇒ GMT Number of planets by year of discovery ...
... – There are already 37 planets detected by transit in this year – Host stars are relatively faint, V ~ 10-15 – Magnitude limit of transit observations will be fainter ⇒ GMT Number of planets by year of discovery ...
The Search for Rocky Planets Around the Nearest Stars
... However, the theory of rocky-planet formation remains less than solid. It is not known what fraction of stars form rocky planets, nor how many avoid subsequent ejection from the planetary system. It also remains unknown if rocky cores above ∼1 MEarth will quickly accrete gas and volatiles to become ...
... However, the theory of rocky-planet formation remains less than solid. It is not known what fraction of stars form rocky planets, nor how many avoid subsequent ejection from the planetary system. It also remains unknown if rocky cores above ∼1 MEarth will quickly accrete gas and volatiles to become ...
Power point presentation - McMaster Physics and Astronomy
... disks with temperatures (1AU) between 150 and 450 K; and lifetimes between 1 – 10 Million yrs Observe 5-20% of stars with planets in this regime: arises if disk viscosity < 0.0001 ...
... disks with temperatures (1AU) between 150 and 450 K; and lifetimes between 1 – 10 Million yrs Observe 5-20% of stars with planets in this regime: arises if disk viscosity < 0.0001 ...
Full Article - Starry Night Software
... TRAPPIST-1h values because fewer transits have been measured – only one transit, by Spitzer, compared with 37 transits for the innermost planet. Their densities range from about 60% to 117% of Earth’s 5.51 grams per cubic cm, indicating that they are predominantly rocky. The densest ones, 1c and 1d, ...
... TRAPPIST-1h values because fewer transits have been measured – only one transit, by Spitzer, compared with 37 transits for the innermost planet. Their densities range from about 60% to 117% of Earth’s 5.51 grams per cubic cm, indicating that they are predominantly rocky. The densest ones, 1c and 1d, ...
Kein Folientitel - tls
... • How do planetary systems form? • Is this a common or an infrequent event? • How unique are the properties of our own solar system? • Are these qualities important for life to form? Up until now we have had only one laboratory to test planet formation theories. We need more! ...
... • How do planetary systems form? • Is this a common or an infrequent event? • How unique are the properties of our own solar system? • Are these qualities important for life to form? Up until now we have had only one laboratory to test planet formation theories. We need more! ...
Nebular Theory and Big Bang
... light or dark; a cloud of gas and dust – Our solar system evolved from a swirling cloud of dust (Nebular Theory) – Gravity caused the gases and dust to be drawn together into a denser cloud (rate of ...
... light or dark; a cloud of gas and dust – Our solar system evolved from a swirling cloud of dust (Nebular Theory) – Gravity caused the gases and dust to be drawn together into a denser cloud (rate of ...
Extra-Solar Planets
... Explaining the Hot Jupiters Best Model: the hot Jupiters must have formed in the outer regions of their star systems, and then spiraled in due to friction in the protostellar disk. (But if they spiral in too much, they collide with the star.) If this is the case, then smaller terrestrial planets in ...
... Explaining the Hot Jupiters Best Model: the hot Jupiters must have formed in the outer regions of their star systems, and then spiraled in due to friction in the protostellar disk. (But if they spiral in too much, they collide with the star.) If this is the case, then smaller terrestrial planets in ...
Earth and Beyond
... There are too many lights in the city. These lights prevent people from seeing thousands of stars each night. ...
... There are too many lights in the city. These lights prevent people from seeing thousands of stars each night. ...
Corot-7b the first Super Earth with radius measured
... Structure First time density of a SE measured 5.6 g cm-3 (~Earth) ➜ rocky likely silicates mantle compatible w 20% of water ...
... Structure First time density of a SE measured 5.6 g cm-3 (~Earth) ➜ rocky likely silicates mantle compatible w 20% of water ...
Presentation Student Sample
... • The best time to see Mars is on a clear morning in the Eastern sky. • It will look like a bright star with a reddish tint to it. • You can see it with your eyes, but if you use a small telescope, you can make out the polar ice caps! ...
... • The best time to see Mars is on a clear morning in the Eastern sky. • It will look like a bright star with a reddish tint to it. • You can see it with your eyes, but if you use a small telescope, you can make out the polar ice caps! ...
the logical theory of questions and the definitions of natural
... •Basri, G., and Brown, M. (2006). Planetesimals to Brown Dwarfs: What Is a Planet?, Annual Review of Earth and Planetary Science 34, pages 193-216. •Brown, M.E. 2004. A world on the edge. http://solarsystem.nasa.gov/scitech/display.cfm?ST_ID=105, ...
... •Basri, G., and Brown, M. (2006). Planetesimals to Brown Dwarfs: What Is a Planet?, Annual Review of Earth and Planetary Science 34, pages 193-216. •Brown, M.E. 2004. A world on the edge. http://solarsystem.nasa.gov/scitech/display.cfm?ST_ID=105, ...
Solar System
... Solar System. meteor A meteoroid falling through a planet’s atmosphere and burning brightly because of friction. meteorite The part of a meteor that crashes into the surface of a satellite. meteoroid One of countless bits of rock and metal, smaller than asteroids, that orbit the Sun or a planet. met ...
... Solar System. meteor A meteoroid falling through a planet’s atmosphere and burning brightly because of friction. meteorite The part of a meteor that crashes into the surface of a satellite. meteoroid One of countless bits of rock and metal, smaller than asteroids, that orbit the Sun or a planet. met ...
What Exoplanets tell us about Planet Formation
... • At least a few % of sunlike stars have Jupiter-like (0.5 2 MJ, 4 AU < a < 10 AU) companions, but > 20% do not • Small planets are more common than more massive ones • More (giant) planets around stars with more metals ...
... • At least a few % of sunlike stars have Jupiter-like (0.5 2 MJ, 4 AU < a < 10 AU) companions, but > 20% do not • Small planets are more common than more massive ones • More (giant) planets around stars with more metals ...
Using Protoplanetary Disks To Weigh The Youngest Stars
... 105.05 – Constraint of a planet mass from the depth and width of an observed gap on a protoplanetary disk In a protoplanetary disk, a large planet is able to create the so-called disk gap, which is a low gas density region along the planet's orbit, due to the gravitational interaction between the di ...
... 105.05 – Constraint of a planet mass from the depth and width of an observed gap on a protoplanetary disk In a protoplanetary disk, a large planet is able to create the so-called disk gap, which is a low gas density region along the planet's orbit, due to the gravitational interaction between the di ...
science of xmas quiz
... b) Space dust freezes upon entering our atmosphere c) Cloud temperatures reach freezing point allowing ice crystals to form around dust particles. d) The wind blows sea salt into the upper atmosphere ...
... b) Space dust freezes upon entering our atmosphere c) Cloud temperatures reach freezing point allowing ice crystals to form around dust particles. d) The wind blows sea salt into the upper atmosphere ...
EvoluCon and formaCon of the solar system – what we know today
... terrestrial region 3. Without Jupiter & Saturn, Uranus and Neptune would have migrated close to the Sun -‐> hot Neptunes 4. If Jupiter & Saturn had had close encounters with each other, their orbits ...
... terrestrial region 3. Without Jupiter & Saturn, Uranus and Neptune would have migrated close to the Sun -‐> hot Neptunes 4. If Jupiter & Saturn had had close encounters with each other, their orbits ...
Looking for Other Worlds
... Cochran & Hatzes (McDonald) 1995 October 6: first extrasolar planet round a ‘normal’ star announced by Swiss team (2 found earlier around a pulsar) ...
... Cochran & Hatzes (McDonald) 1995 October 6: first extrasolar planet round a ‘normal’ star announced by Swiss team (2 found earlier around a pulsar) ...
Exploring Space Powerpoint presentation
... designed to impact with comet Tempel 1 in July of that year. The mother probe will return to Earth in January 2008. The impactor (lander) probe formed a crater and provided information as to the makeup of a comet. However, the impactor could well have carried a nuclear warhead to shatter or realign ...
... designed to impact with comet Tempel 1 in July of that year. The mother probe will return to Earth in January 2008. The impactor (lander) probe formed a crater and provided information as to the makeup of a comet. However, the impactor could well have carried a nuclear warhead to shatter or realign ...
Super-Earth
![](https://commons.wikimedia.org/wiki/Special:FilePath/Exoplanet_Comparison_CoRoT-7_b.png?width=300)
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.