The GAIA astrometric survey of extra
... range 0.1 ≤ MJ ≤ 5, orbiting 1-M⊙ stars with periods up to twice the mission duration, and placing the systems at increasing distances from our Sun. We parameterized our results in terms of the astrometric signal-to-noise ratio α/σψ between the astrometric signature α and the single measurement erro ...
... range 0.1 ≤ MJ ≤ 5, orbiting 1-M⊙ stars with periods up to twice the mission duration, and placing the systems at increasing distances from our Sun. We parameterized our results in terms of the astrometric signal-to-noise ratio α/σψ between the astrometric signature α and the single measurement erro ...
2008F-ExtraSolarPlanets-Smith
... times more massive than Earth and has a radius close to eleven times larger than Earth. The exoplanets have been observed to orbit very close to their parent star. This is abnormal for such large, Jupiter-like planets. In our solar system, Jupiter formed far away from the Sun and its orbit has remai ...
... times more massive than Earth and has a radius close to eleven times larger than Earth. The exoplanets have been observed to orbit very close to their parent star. This is abnormal for such large, Jupiter-like planets. In our solar system, Jupiter formed far away from the Sun and its orbit has remai ...
ExTRaSOLaR pLaNeTS
... available to study different types of galaxies and stars, which have enabled astronomers to develop models and theories on star and galaxy formation and to place our own galaxy and star amongst them. The Solar System is 4.6 billion years old, but there is no way to measure directly how it formed and ...
... available to study different types of galaxies and stars, which have enabled astronomers to develop models and theories on star and galaxy formation and to place our own galaxy and star amongst them. The Solar System is 4.6 billion years old, but there is no way to measure directly how it formed and ...
Light and shadow from distant worlds
... The nearness of the hot Jupiters to their stars means that they have a significant probability (typically about 0.1) of transiting their star as seen from Earth. During the transit, our Earth falls within the shadow of the exoplanet, and the light we receive from the parent star is diminished by a s ...
... The nearness of the hot Jupiters to their stars means that they have a significant probability (typically about 0.1) of transiting their star as seen from Earth. During the transit, our Earth falls within the shadow of the exoplanet, and the light we receive from the parent star is diminished by a s ...
The Mt John University Observatory search for Earth
... dedicated to a few systems rather than to include as many targets as possible. The need of RV searches to focus on nearby bright stars has an attractive side-effect: the targets are all very close to the Sun, unlike the Kepler targets or microlensing systems, which are at typical distances of severa ...
... dedicated to a few systems rather than to include as many targets as possible. The need of RV searches to focus on nearby bright stars has an attractive side-effect: the targets are all very close to the Sun, unlike the Kepler targets or microlensing systems, which are at typical distances of severa ...
SeagerGUASAI - Sara Seager
... was reached, the majority was not in favour of this possibility at the time. However, considering the ever increasing interest of the general public in being involved in the discovery and understanding of the Universe, the IAU decided in 2013 to restart the discussion of the naming procedure for exo ...
... was reached, the majority was not in favour of this possibility at the time. However, considering the ever increasing interest of the general public in being involved in the discovery and understanding of the Universe, the IAU decided in 2013 to restart the discussion of the naming procedure for exo ...
Photosynthetic Potential of Planets in 3:2 Spin Orbit
... The habitable zone (HZ) concept, which describes an annulus around a star in which planets of Earth mass and atmospheric composition can sustain surface liquid water (Huang 1959, Dole 1964), has been an extremely useful conceptual tool in understanding under what conditions Earth-like planets may be ...
... The habitable zone (HZ) concept, which describes an annulus around a star in which planets of Earth mass and atmospheric composition can sustain surface liquid water (Huang 1959, Dole 1964), has been an extremely useful conceptual tool in understanding under what conditions Earth-like planets may be ...
Astrobiology: The Search for Extraterrestrial Life
... The method of using radial velocity measures these speed variations in order to confirm the presence of an orbiting planet. Modern spectrometers are able to detect velocity variations down to approximately 1 m/s. The radial-velocity method, also known as Doppler spectroscopy, has been the most produ ...
... The method of using radial velocity measures these speed variations in order to confirm the presence of an orbiting planet. Modern spectrometers are able to detect velocity variations down to approximately 1 m/s. The radial-velocity method, also known as Doppler spectroscopy, has been the most produ ...
Lecture17-ASTA01
... and difficult to detect close to the glare of its star. • However, there are ways to find these planets. • To see how, all you have to do is imagine walking a dog. ...
... and difficult to detect close to the glare of its star. • However, there are ways to find these planets. • To see how, all you have to do is imagine walking a dog. ...
arXiv:1404.0641v2 [astro
... on the planet. Currently, about twenty potentially habitable planets are listed. The most intriguing question driving all these studies is whether planets within habitable zones host extraterrestrial life. It is implicitly assumed that a planet in the habitable zone bears biota. However along with t ...
... on the planet. Currently, about twenty potentially habitable planets are listed. The most intriguing question driving all these studies is whether planets within habitable zones host extraterrestrial life. It is implicitly assumed that a planet in the habitable zone bears biota. However along with t ...
Document
... “He was one of the finest people I have ever known…but he didn’t really understand physics because, during the eclipse of 1919 he stayed up all night to see if it would confirm the bending of light by the gravitational field. If he had really understood general relativity he would have gone to bed t ...
... “He was one of the finest people I have ever known…but he didn’t really understand physics because, during the eclipse of 1919 he stayed up all night to see if it would confirm the bending of light by the gravitational field. If he had really understood general relativity he would have gone to bed t ...
PLANETS
... indicated that the exoplanet's atmosphere must have sodium vapor in it. The planet of HD 209458, unofficially named Osiris, is so close to its star that its atmosphere is literally boiling away into space. HD 209458 b represents a number of milestones in extraplanetary research. It was the first tra ...
... indicated that the exoplanet's atmosphere must have sodium vapor in it. The planet of HD 209458, unofficially named Osiris, is so close to its star that its atmosphere is literally boiling away into space. HD 209458 b represents a number of milestones in extraplanetary research. It was the first tra ...
Activity I: Plotting a Light Curve due to a Transit
... This section of Hands On Universe is focusing on the Transit method of planet detection. Please note that the Transit method is not the only method for discovering new planets. (In fact HD209458b was first discovered using what is call the Radial Velocity method.) Methods of planet detection include ...
... This section of Hands On Universe is focusing on the Transit method of planet detection. Please note that the Transit method is not the only method for discovering new planets. (In fact HD209458b was first discovered using what is call the Radial Velocity method.) Methods of planet detection include ...
transit observations of new planets
... this was done for planets within our solar system. Now this search has expanded to include a much greater area our galaxy. One way in which the search is conducted is via the “Transit” method. A transit occurs when an object passes in front of a star. When this happens, some of the light coming from ...
... this was done for planets within our solar system. Now this search has expanded to include a much greater area our galaxy. One way in which the search is conducted is via the “Transit” method. A transit occurs when an object passes in front of a star. When this happens, some of the light coming from ...
A Planetary System Around Our Nearest Star is Emerging
... Today, a team of European scientists announces the discovery of the first planet around a star in the Alpha Centau planet is as massive as Earth, only 13% more massive, although too hot for life. This new result opens the possibilit might be other Earth-size planets in the Alpha Centauri system, inc ...
... Today, a team of European scientists announces the discovery of the first planet around a star in the Alpha Centau planet is as massive as Earth, only 13% more massive, although too hot for life. This new result opens the possibilit might be other Earth-size planets in the Alpha Centauri system, inc ...
PLANETS
... central star has been artificially blocked out by astronomers using a ‘Coronograph’ This disk around Beta Pictoris is probably connected with a planetary system. The disk does not start at the star. Rather, its inner edge begins around 25 AU away, farther than the average orbital distance of Uranus ...
... central star has been artificially blocked out by astronomers using a ‘Coronograph’ This disk around Beta Pictoris is probably connected with a planetary system. The disk does not start at the star. Rather, its inner edge begins around 25 AU away, farther than the average orbital distance of Uranus ...
Resources: - Real Science
... Scientists have found water on the planet __ another star. This is the first time this key _________ for living things has been found on an extrasolar planet. More than 200 extrasolar planets have ____ discovered so far. These are planets in orbit around _ star, in the same way as our Earth is __ or ...
... Scientists have found water on the planet __ another star. This is the first time this key _________ for living things has been found on an extrasolar planet. More than 200 extrasolar planets have ____ discovered so far. These are planets in orbit around _ star, in the same way as our Earth is __ or ...
PLANETS
... central star has been artificially blocked out by astronomers using a ‘Coronograph’ This disk around Beta Pictoris is probably connected with a planetary system. The disk does not start at the star. Rather, its inner edge begins around 25 AU away, farther than the average orbital distance of Uranus ...
... central star has been artificially blocked out by astronomers using a ‘Coronograph’ This disk around Beta Pictoris is probably connected with a planetary system. The disk does not start at the star. Rather, its inner edge begins around 25 AU away, farther than the average orbital distance of Uranus ...
A Giant Planet Around a Metal-poor Star of Extragalactic Origin
... certain circumstances (22, 39, 40). It is also possible that the planet’s orbit decayed through tidal interaction with the stellar envelope. However, a prerequisite to survival is then that the mass loss of the star stops before the planet would have been evaporated or accreted. Assuming asymmetric ...
... certain circumstances (22, 39, 40). It is also possible that the planet’s orbit decayed through tidal interaction with the stellar envelope. However, a prerequisite to survival is then that the mass loss of the star stops before the planet would have been evaporated or accreted. Assuming asymmetric ...
The ExOoS Mission - Extraterrestrial Octopus on Steroids
... Astrobiology is one of the fields with the fastest development in the last years (Harrison et al. 2013; Seager et al. 2012). Advances in molecular techniques and technology have allowed the detection and the study of living organisms and their traces in environments traditionally unconceivable to ho ...
... Astrobiology is one of the fields with the fastest development in the last years (Harrison et al. 2013; Seager et al. 2012). Advances in molecular techniques and technology have allowed the detection and the study of living organisms and their traces in environments traditionally unconceivable to ho ...
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 ...
ppt
... Type I migration: interaction between giant planet and circumstellar gas/dust disk pushes planet inwards Type II migration: Gap in disk opens and migration slows, takes approximately 100 times longer to move a given distance Have to halt the process: removal of disk; tidal/magnetic interactions betw ...
... Type I migration: interaction between giant planet and circumstellar gas/dust disk pushes planet inwards Type II migration: Gap in disk opens and migration slows, takes approximately 100 times longer to move a given distance Have to halt the process: removal of disk; tidal/magnetic interactions betw ...
Word Doc - CAASTRO
... Drag and drop the Star’s Type (spectral type), Star’s Mass (in Sun Masses), Star’s Radius (in Sun Radii) and Star’s Temperature (°K) into relevant boxes located in the ‘NOTEBAR’ at the bottom of the screen. The data are colour coded to make it easier to drag and drop. ● Click the NEXT button and fol ...
... Drag and drop the Star’s Type (spectral type), Star’s Mass (in Sun Masses), Star’s Radius (in Sun Radii) and Star’s Temperature (°K) into relevant boxes located in the ‘NOTEBAR’ at the bottom of the screen. The data are colour coded to make it easier to drag and drop. ● Click the NEXT button and fol ...
Joining the Party - Lincoln-Sudbury Regional High School
... In the Activity Starbirth we saw that star formation involves the collapse of a cool molecular cloud. In the final stages of this collapse, the cloud’s core becomes sufficiently hot and the gas is under enough pressure for fusion reactions to begin: this is a young stellar object (YSO), a baby star. ...
... In the Activity Starbirth we saw that star formation involves the collapse of a cool molecular cloud. In the final stages of this collapse, the cloud’s core becomes sufficiently hot and the gas is under enough pressure for fusion reactions to begin: this is a young stellar object (YSO), a baby star. ...
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.