Clear Skies - Cowichan Valley Starfinders Society
... NASA’s Chandra X-Ray observatory might have observed a brand new kind of supernova, or maybe it’s just an unusually bright supernova. Whatever the case, the explosion of SN 2006gy seems to be the brightest supernova ever observed, flaring with 100 times the energy of a typical exploded star. The tea ...
... NASA’s Chandra X-Ray observatory might have observed a brand new kind of supernova, or maybe it’s just an unusually bright supernova. Whatever the case, the explosion of SN 2006gy seems to be the brightest supernova ever observed, flaring with 100 times the energy of a typical exploded star. The tea ...
Exoplanet Working Group
... • Background eclipsing binaries are source of confusion • Characterization of the transits requires other analysis of the signal • CoRoT detectivity limitation: (1.1 R 3days) on M0 dwarf stars Results are to be published and LCs will be available on request CoRoT-Brazil ...
... • Background eclipsing binaries are source of confusion • Characterization of the transits requires other analysis of the signal • CoRoT detectivity limitation: (1.1 R 3days) on M0 dwarf stars Results are to be published and LCs will be available on request CoRoT-Brazil ...
Article Reference - Archive ouverte UNIGE
... M dwarf. The Na i D are very strong, implying a surface gravity (log g) around 4.6, closer to an M spectral type than a K7 (Fig. 1). The equivalent widths of several clean and unblended Fe i lines were measured, in order to determine the stellar metallicity, evaluate microturbulence, and confirm the ...
... M dwarf. The Na i D are very strong, implying a surface gravity (log g) around 4.6, closer to an M spectral type than a K7 (Fig. 1). The equivalent widths of several clean and unblended Fe i lines were measured, in order to determine the stellar metallicity, evaluate microturbulence, and confirm the ...
View Professor Thaler`s presentation slides
... Exolife Water and, especially, oxygen (in this case ozone) are smoking gun indicators of our kind of life. Oxygen is much too reactive to remain in the atmosphere without plant life to replenish it. This is a very difficult exoplanet measurement, especially with a small, Earthlike planet. However, ...
... Exolife Water and, especially, oxygen (in this case ozone) are smoking gun indicators of our kind of life. Oxygen is much too reactive to remain in the atmosphere without plant life to replenish it. This is a very difficult exoplanet measurement, especially with a small, Earthlike planet. However, ...
1 Exoplanets 2 Types of Exoplanets
... The habitable zone is the region around a star in which the conditions are just right for a planet to have liquid water on its surface. Here on Earth, so far as we know, all life must have access to liquid water to survive. Therefore, a planet is considered “habitable” if it has liquid water. This z ...
... The habitable zone is the region around a star in which the conditions are just right for a planet to have liquid water on its surface. Here on Earth, so far as we know, all life must have access to liquid water to survive. Therefore, a planet is considered “habitable” if it has liquid water. This z ...
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 ...
The most common habitable planets – atmospheric characterization
... decoupled from the atmospheric one. Since the thermal capacitance of the atmosphere becomes more evident when dFstar /dt is greater, we should look for its effects near periastron. In the next section, some results from computer simulations are shown in order to illustrate the potentials and limitat ...
... decoupled from the atmospheric one. Since the thermal capacitance of the atmosphere becomes more evident when dFstar /dt is greater, we should look for its effects near periastron. In the next section, some results from computer simulations are shown in order to illustrate the potentials and limitat ...
No Slide Title
... • 1995 Planet found around nearby Sun-like star 51 Peg by Swiss astronomers Michel Mayor & Didier Queloz using the “Doppler Wobble” method – Most successful detection method by far, but other methods like transits are now very ...
... • 1995 Planet found around nearby Sun-like star 51 Peg by Swiss astronomers Michel Mayor & Didier Queloz using the “Doppler Wobble” method – Most successful detection method by far, but other methods like transits are now very ...
What Makes a Planet Habitable?
... among the countless exoplanets, which ones may be conducive to life, and what signs should we look for in our search for life in the universe? These questions relate to at least two major challenges. We need to understand our biochemical origins in the distant past of the Earth, and in a larger cont ...
... among the countless exoplanets, which ones may be conducive to life, and what signs should we look for in our search for life in the universe? These questions relate to at least two major challenges. We need to understand our biochemical origins in the distant past of the Earth, and in a larger cont ...
ph507lecnote06
... SPECTRUM BINARY: 2 sets of lines but no apparent orbital motion but spectrum is clearly combined from stars of differing spectral class. ECLIPSING BINARY: - Unresolved - Stars are orbiting in plane close to line of sight giving eclipses observable as a change in the combined brightness with time (‘’ ...
... SPECTRUM BINARY: 2 sets of lines but no apparent orbital motion but spectrum is clearly combined from stars of differing spectral class. ECLIPSING BINARY: - Unresolved - Stars are orbiting in plane close to line of sight giving eclipses observable as a change in the combined brightness with time (‘’ ...
Microlensing
... A. An optimised planetary microlens follow-up network, including feedback from fully-automated real-time modelling. B. The first census of the cold planet population, involving planets of Neptune to super-Earth (few M⊕ to 20 M⊕) with host star separations around 2 AU. C. Under highly favourable cond ...
... A. An optimised planetary microlens follow-up network, including feedback from fully-automated real-time modelling. B. The first census of the cold planet population, involving planets of Neptune to super-Earth (few M⊕ to 20 M⊕) with host star separations around 2 AU. C. Under highly favourable cond ...
Exoplanet, 51 Pegasi b, Solar System, VLT, La Silla. ESOcast
... richest planetary system yet. The system, located over 120 light-years away around the Sun-like star HD 10180, contains at least five exoplanets. There is also tantalising evidence that two more planets may be present in this system, one of which would have the lowest mass ever found. ...
... richest planetary system yet. The system, located over 120 light-years away around the Sun-like star HD 10180, contains at least five exoplanets. There is also tantalising evidence that two more planets may be present in this system, one of which would have the lowest mass ever found. ...
Test - Scioly.org
... same distance from Earth, and assuming that both planets are much less massive than their host stars, which of the following is true? a. The first planet is further from its star but less massive. b. The first planet is closer to its host star and less massive. c. Both planets are about the same ...
... same distance from Earth, and assuming that both planets are much less massive than their host stars, which of the following is true? a. The first planet is further from its star but less massive. b. The first planet is closer to its host star and less massive. c. Both planets are about the same ...
pdf file with complementary illustrations / animations
... For the last 20 years the giant planets known as hot Jupiters have presented astronomers with a puzzle. How did they settle into orbits 100 times closer to their host stars than our own Jupiter is to the Sun? An international team of astronomers has announced this week1 the discovery of a newborn ho ...
... For the last 20 years the giant planets known as hot Jupiters have presented astronomers with a puzzle. How did they settle into orbits 100 times closer to their host stars than our own Jupiter is to the Sun? An international team of astronomers has announced this week1 the discovery of a newborn ho ...
Basic data of CoRoT-Exo-2b - tls
... continuous monitoring. That means we can detect transit of planets with much longer orbital period. Here is a comparison with SuperWASP, which is located at the island of La Palma. ...
... continuous monitoring. That means we can detect transit of planets with much longer orbital period. Here is a comparison with SuperWASP, which is located at the island of La Palma. ...
ph709-15-testrevision
... Young stars are preferred because young planets are expected to be more luminous than older planets. In addition, direct imaging is based on detection of planet luminosity, which must be related to planet mass or size through uncertain theoretical models. Some stunning individual systems have been r ...
... Young stars are preferred because young planets are expected to be more luminous than older planets. In addition, direct imaging is based on detection of planet luminosity, which must be related to planet mass or size through uncertain theoretical models. Some stunning individual systems have been r ...
DAY AND NIGHT, SEASONS
... for life. Alternatively, life might exist beneath the surface. For planets with an axial tilt life may only be able to survive if it migrates back and forth between cooler and hotter regions throughout its year-long day. 2: A planet with an eccentric orbit. Planets move in elliptical orbits, with t ...
... for life. Alternatively, life might exist beneath the surface. For planets with an axial tilt life may only be able to survive if it migrates back and forth between cooler and hotter regions throughout its year-long day. 2: A planet with an eccentric orbit. Planets move in elliptical orbits, with t ...
Planetary System Formation, Extrasolar Planets, Life in the Universe
... • In IR (10 µm): 3 x 105 as as bright – Warm dust (analogue of Zodiacal dust) around the star can be much brighter than the planet--i.e. the background from the dust can be very bright ...
... • In IR (10 µm): 3 x 105 as as bright – Warm dust (analogue of Zodiacal dust) around the star can be much brighter than the planet--i.e. the background from the dust can be very bright ...
Powerpoint - BU Imaging Science
... Extrasolar planets are likely • Other stars are distant suns • Successful nebular theory for formation of our solar system suggests that planetary systems are a natural consequence of star formation • Why didn’t you learn about extrasolar planets in elementary school? ...
... Extrasolar planets are likely • Other stars are distant suns • Successful nebular theory for formation of our solar system suggests that planetary systems are a natural consequence of star formation • Why didn’t you learn about extrasolar planets in elementary school? ...
Word - El Camino College
... OK, I got distracted there. Back to the story. There has been something of a race to get the first image of a planet around another star. I played a minor role in this race. When I worked on a camera onboard Hubble, we wondered if we could image a planet orbiting the nearest sunlike star, Alpha Cent ...
... OK, I got distracted there. Back to the story. There has been something of a race to get the first image of a planet around another star. I played a minor role in this race. When I worked on a camera onboard Hubble, we wondered if we could image a planet orbiting the nearest sunlike star, Alpha Cent ...
Chapter 13 32)Which method could detect a planet in an orbit that is
... core will contract to fuse hydrogen more efficiently as its core hydrogen deletes. The smaller core will cause an increase in the temperature of the core, which will increase the luminosity output from the Sun and bake away the Earth’s atmosphere and any life on the surface. 53)The Sun’s average sur ...
... core will contract to fuse hydrogen more efficiently as its core hydrogen deletes. The smaller core will cause an increase in the temperature of the core, which will increase the luminosity output from the Sun and bake away the Earth’s atmosphere and any life on the surface. 53)The Sun’s average sur ...
Why is it so difficult to detect planets around other stars? Planet
... Suppose you found a star with the same mass as the Sun with spectral lines that are slightly redshifted then slightly blueshifted with a repeating period of 16 months—what could you conclude? A. It has a planet orbiting at less than 1 AU. B. It has a planet orbiting at greater than 1 AU. C. The p ...
... Suppose you found a star with the same mass as the Sun with spectral lines that are slightly redshifted then slightly blueshifted with a repeating period of 16 months—what could you conclude? A. It has a planet orbiting at less than 1 AU. B. It has a planet orbiting at greater than 1 AU. C. The p ...
PowerPoint
... balance point (center of mass) for a teeter-totter. Archimedes discovered that the balance point (center of mass) for a board with masses m1 and m2 at each end satisfies m1r1=m2r2 (Law of the Lever). ...
... balance point (center of mass) for a teeter-totter. Archimedes discovered that the balance point (center of mass) for a board with masses m1 and m2 at each end satisfies m1r1=m2r2 (Law of the Lever). ...
The Dynamics-Based Approach to Studying Terrestrial Exoplanets
... 4. Precise estimates of the masses and radii of planets studied by occultation spectroscopy will be determined from radial velocities and transit observations. Given these detailed constraints on the physical structure and bulk composition, the inferences about the atmosphere from the observed spect ...
... 4. Precise estimates of the masses and radii of planets studied by occultation spectroscopy will be determined from radial velocities and transit observations. Given these detailed constraints on the physical structure and bulk composition, the inferences about the atmosphere from the observed spect ...
Gliese 581
Gliese 581 (/ˈɡliːzə/) is a star of spectral type M3V (a red dwarf) about 20 light years away from Earth in the constellation Libra. Its estimated mass is about a third of that of the Sun, and it is the 89th closest known star to the Sun. Observations suggest that the star has a planetary system consisting of three known planets, designated Gliese 581 b, c, and e and a possibly confirmed planet, d, in order of discovery. Additional outer planets, which received the designations Gliese 581 f, and g have been proposed, but the evidence that led to the discovery claims has been shown to be the result of stellar activity mimicking the radial velocity variations due to orbiting planets.Gliese 581 has been the subject of a ""huge amount of attention"" in the quest to discover the first habitable extrasolar planet; first for c, and then d and g. Gliese 581 c, the first low-mass extrasolar planet found near a habitable zone, was discovered in April 2007. It has since been shown that under known terrestrial planet climate models, Gliese 581 c is likely to have a runaway greenhouse effect, and hence is probably too hot to be habitable, analogous to Venus. The proposed planets Gliese 581 d and Gliese 581 g also received attention as being located within the habitable zone, but their existence has subsequently been put into doubt by some authors.On 27 November 2012, the European Space Agency announced a debris disk, with at least ten times as many comets as the Solar System. This put constraints on possible planets beyond 0.75 AU.