Solutions3
... 103 m/s(0.58d ∗ 86400s/d)/2 = 7.0 × 108 m, which is equal to one solar radius. The larger star’s radius can be measured as rl = v(tc − ta )/2, where tc − ta = 1.22 days, so rl = 1.5 × 109 m, or 2.1 solar radii. e: To find the ratio of the effective temperatures, we use (Bo − Bp )/(Bo − Bs ) = Ts4 /T ...
... 103 m/s(0.58d ∗ 86400s/d)/2 = 7.0 × 108 m, which is equal to one solar radius. The larger star’s radius can be measured as rl = v(tc − ta )/2, where tc − ta = 1.22 days, so rl = 1.5 × 109 m, or 2.1 solar radii. e: To find the ratio of the effective temperatures, we use (Bo − Bp )/(Bo − Bs ) = Ts4 /T ...
Hydrogen Greenhouse Planets Beyond the Habitable Zone
... volatiles with it. In contrast, more massive OGLE05-390L, which orbits ∼2.6 AU from a mid Mtype star but has a similar effective temperature (Ehrenreich et al. 2006), may retain a primordial hydrogen atmosphere. This planet could potentially sustain liquid water at its surface, and may represent pot ...
... volatiles with it. In contrast, more massive OGLE05-390L, which orbits ∼2.6 AU from a mid Mtype star but has a similar effective temperature (Ehrenreich et al. 2006), may retain a primordial hydrogen atmosphere. This planet could potentially sustain liquid water at its surface, and may represent pot ...
Life in the galactic danger zone
... giant planets to inhibit these terrestrial planets. The danger posed by high metallicity environments in the work of Lineweaver is higher than that of our work.” So, if you believe Gowanlock, the higher metallicity coupled with the high density of stars near the galactic centre means that although m ...
... giant planets to inhibit these terrestrial planets. The danger posed by high metallicity environments in the work of Lineweaver is higher than that of our work.” So, if you believe Gowanlock, the higher metallicity coupled with the high density of stars near the galactic centre means that although m ...
The Solar System
... Scientists discovered other large objects in the Kuiper (rhymes with hyper) belt beyond Neptune’s orbit. Some scientists wanted to consider these objects planets as well. Other scientists argued that Pluto and these newly discovered objects were different from the other eight planets. In 2006, the I ...
... Scientists discovered other large objects in the Kuiper (rhymes with hyper) belt beyond Neptune’s orbit. Some scientists wanted to consider these objects planets as well. Other scientists argued that Pluto and these newly discovered objects were different from the other eight planets. In 2006, the I ...
6 March 2013 Exoplanets and Where to Find Them Professor
... The Galaxy is continually evolving and changing, albeit on the astronomical timescale of millions of years. Within the disc, the spiral arms show where diffuse hydrogen gas clouds have been compressed by density waves, triggering the process of gravitational collapse that leads to the formation of s ...
... The Galaxy is continually evolving and changing, albeit on the astronomical timescale of millions of years. Within the disc, the spiral arms show where diffuse hydrogen gas clouds have been compressed by density waves, triggering the process of gravitational collapse that leads to the formation of s ...
habitable - Pathways Towards Habitable Planets II
... Conclusions • Some habitable planets (with liquid water) are more “habitable” than others (duration of habitability, availability of light and chemicals, etc.) • The “Habitable zone” could be defined as the zone outside which it is surface liquid water is impossible: little hope to find a detectabl ...
... Conclusions • Some habitable planets (with liquid water) are more “habitable” than others (duration of habitability, availability of light and chemicals, etc.) • The “Habitable zone” could be defined as the zone outside which it is surface liquid water is impossible: little hope to find a detectabl ...
Dynamics of disks with planets
... away from its host star (a > 10 AU). On the other hand, such a perturbation cannot explain the eccentricities of short-period (hot) planets. Of course, planets in known binary systems, such as 16 Cyg B, can also be strongly affected (Holman & Wiegert 1999). Eccentricity and orbital inclination can u ...
... away from its host star (a > 10 AU). On the other hand, such a perturbation cannot explain the eccentricities of short-period (hot) planets. Of course, planets in known binary systems, such as 16 Cyg B, can also be strongly affected (Holman & Wiegert 1999). Eccentricity and orbital inclination can u ...
4 Kepler`s Laws - NMSU Astronomy
... One of the basic tenets of physics is that all natural laws, such as gravity, are the same everywhere in the Universe. Thus, when Newton used Kepler’s laws to figure out how gravity worked in the solar system, we suddenly had the tools to understand how stars interact, and how galaxies, which are la ...
... One of the basic tenets of physics is that all natural laws, such as gravity, are the same everywhere in the Universe. Thus, when Newton used Kepler’s laws to figure out how gravity worked in the solar system, we suddenly had the tools to understand how stars interact, and how galaxies, which are la ...
We especially need imagination in science. It is not all mathematics
... planets or the two classes of planets, Also, a close encounter with another star is unlikely to have happened. ...
... planets or the two classes of planets, Also, a close encounter with another star is unlikely to have happened. ...
Introduction - Beck-Shop
... classes of rings and ring systems were seen around all four giant planets. Some of the new discoveries have been explained, but others remain mysterious. Five comets and ten asteroids have thus far been explored close up by spacecraft (Table F.2), and there have been several missions to study the Su ...
... classes of rings and ring systems were seen around all four giant planets. Some of the new discoveries have been explained, but others remain mysterious. Five comets and ten asteroids have thus far been explored close up by spacecraft (Table F.2), and there have been several missions to study the Su ...
Star and Planet Formation - Homepages of UvA/FNWI staff
... movement of the Earth on its orbit. 2. If the Earth rotates around its axis (as required to explain day and night), things should fly off the spinning planet. 3. If the Earth rotates around the Sun, we should observe parallaxes for the fixed stars. While the first two can actually be attributed to a ...
... movement of the Earth on its orbit. 2. If the Earth rotates around its axis (as required to explain day and night), things should fly off the spinning planet. 3. If the Earth rotates around the Sun, we should observe parallaxes for the fixed stars. While the first two can actually be attributed to a ...
Transit surveys for Earths in the habitable zones of white dwarfs
... added noise (LSST Science Book 2009). I find LSST can detect >9 CHZ planets if η⊕ >5×10−3, where detection requires that at least three epochs fall within transit with two points each detected at >7σ. The LSST survey will be biased toward detecting shorter period (∝ P −4/3 ) and large-size planets t ...
... added noise (LSST Science Book 2009). I find LSST can detect >9 CHZ planets if η⊕ >5×10−3, where detection requires that at least three epochs fall within transit with two points each detected at >7σ. The LSST survey will be biased toward detecting shorter period (∝ P −4/3 ) and large-size planets t ...
NCEA Level 2 Earth and Space Science (91192) 2015
... leftover gas and dust particles. These particles rotate around the young star and flatten into a gaseous protoplanetary disk around the star. A protoplanetary disk is a flattened disk shape. This contains rocky particles that condense together due to gravity. The disk is swirling (to conserve angula ...
... leftover gas and dust particles. These particles rotate around the young star and flatten into a gaseous protoplanetary disk around the star. A protoplanetary disk is a flattened disk shape. This contains rocky particles that condense together due to gravity. The disk is swirling (to conserve angula ...
For Chapter 16
... Formation of the Solar System • Began with a large, swirling volume of cold gases and dust – a rotating solar nebula • Contracted under the influence of its own gravity – into a flattened, rotating disk • Further contraction produced the protosun and eventually accreted the planets • As particles m ...
... Formation of the Solar System • Began with a large, swirling volume of cold gases and dust – a rotating solar nebula • Contracted under the influence of its own gravity – into a flattened, rotating disk • Further contraction produced the protosun and eventually accreted the planets • As particles m ...