Planet Hunters: The First Two Planet Candidates Identified by the
... modeling of the interior structure and composition of exoplanets. The Kepler Mission is monitoring more than 150,000 stars with unprecedented 29-minute observing cadence (Jenkins et al. 2010) and a relative photometric precision approaching 20 ppm in 6.5 hours for Kp=12 mag stars to search for trans ...
... modeling of the interior structure and composition of exoplanets. The Kepler Mission is monitoring more than 150,000 stars with unprecedented 29-minute observing cadence (Jenkins et al. 2010) and a relative photometric precision approaching 20 ppm in 6.5 hours for Kp=12 mag stars to search for trans ...
ASTRONOMY 113 Laboratory Kepler`s 3rd Law and the Mass of Sgr A
... and it travels at 99% of the speed of light. This jet is more powerful than all the stars in the Milky Way combined – 30 billion times more powerful than our sun. It can be traced back all the way to the central object of Virgo, where it is produced in a volume about as small as Saturn’s orbit arou ...
... and it travels at 99% of the speed of light. This jet is more powerful than all the stars in the Milky Way combined – 30 billion times more powerful than our sun. It can be traced back all the way to the central object of Virgo, where it is produced in a volume about as small as Saturn’s orbit arou ...
Lecture8_2014_v2 - UCO/Lick Observatory
... almost perfect alignment between source and lens. One-time events! ...
... almost perfect alignment between source and lens. One-time events! ...
An extrasolar planetary system with three
... Figure 2 shows two close-up views of the data and best-fit model as a function of time, together with the whole radial velocity curve after removal of the inner planets, thus revealing the long-term variations due to the third planet. To check if our solution really gives the best fit to the data, w ...
... Figure 2 shows two close-up views of the data and best-fit model as a function of time, together with the whole radial velocity curve after removal of the inner planets, thus revealing the long-term variations due to the third planet. To check if our solution really gives the best fit to the data, w ...
Lecture 3
... ancient times has undergone many changes in the process of regionalization, and today there are several regional Indian calendars, as well as an Indian national calendar. In the Hindu calendar, the day begins with sunrise. Assigned to five "properties" calls angas. ...
... ancient times has undergone many changes in the process of regionalization, and today there are several regional Indian calendars, as well as an Indian national calendar. In the Hindu calendar, the day begins with sunrise. Assigned to five "properties" calls angas. ...
Extrasolar Planetary Systems » American Scientist
... for what might be a planet orbiting an obscure star known as HD 114762. Because Latham's planet has at least 10 times the mass of Jupiter, astronomers tended to assume that it was either a brown dwarf or a star of very low mass. So it, too, didn't make headlines. In 1992, Alexander Wolsczan of Penn ...
... for what might be a planet orbiting an obscure star known as HD 114762. Because Latham's planet has at least 10 times the mass of Jupiter, astronomers tended to assume that it was either a brown dwarf or a star of very low mass. So it, too, didn't make headlines. In 1992, Alexander Wolsczan of Penn ...
Return Visit Optimization for Planet Finding
... Conclusions and Future Work We can draw several important conclusions from the last simulation: • There is no single optimal return strategy: a combination of these (and other) strategies must be employed, along with all available information about the candidate stars, to produce an optimal revisit ...
... Conclusions and Future Work We can draw several important conclusions from the last simulation: • There is no single optimal return strategy: a combination of these (and other) strategies must be employed, along with all available information about the candidate stars, to produce an optimal revisit ...
WASP-24b: A New Transiting Close-in Hot Jupiter
... Guillot et al. (2006), Burrows et al. (2007)). Ultra-short period planets such as WASP-19 b (Hebb et al. 2010) offer a testbed for the physics of the dissipation of tidal energy, thought to both bolster the planetary radius (Fortney et al. (2007), Burrows et al. (2007)) and perhaps cause the planet’ ...
... Guillot et al. (2006), Burrows et al. (2007)). Ultra-short period planets such as WASP-19 b (Hebb et al. 2010) offer a testbed for the physics of the dissipation of tidal energy, thought to both bolster the planetary radius (Fortney et al. (2007), Burrows et al. (2007)) and perhaps cause the planet’ ...
T H E S C I E N T I F I C R E V O L U T I O N
... Copernican twists. Among his observations, Galileo argues there are innumerable stars invisible to the naked eye, mountains on the Moon (which he eventually measures), and four moons circling Jupiter. These observations were made for the most part in 1609; later in 1610 Galileo observes the phases o ...
... Copernican twists. Among his observations, Galileo argues there are innumerable stars invisible to the naked eye, mountains on the Moon (which he eventually measures), and four moons circling Jupiter. These observations were made for the most part in 1609; later in 1610 Galileo observes the phases o ...
Microlensing Studies in Crowded Fields
... • OGLE-2005-BLG-390 was a star ~9.6 Rsun and planet of ~5Mearth. • An Earth mass planet at the same location around that giant star would have given a ~3% deviation. • A Moon mass object around a Sun like star would have given ~1% deviation lasting over only one hour. • This kind of deviation will b ...
... • OGLE-2005-BLG-390 was a star ~9.6 Rsun and planet of ~5Mearth. • An Earth mass planet at the same location around that giant star would have given a ~3% deviation. • A Moon mass object around a Sun like star would have given ~1% deviation lasting over only one hour. • This kind of deviation will b ...
Physics Today November 2003- Article: The Growth of Astrophysi...
... As figure 2 attests, astronomers also needed better timing capabilities to detect such things as slowly expanding supernova remnants, rapid flaring in stars, millisecond pulsars, gamma-ray bursts, quasiperiodic x-ray emission from accretion disks around black holes, and rapid x-ray repeaters. ...
... As figure 2 attests, astronomers also needed better timing capabilities to detect such things as slowly expanding supernova remnants, rapid flaring in stars, millisecond pulsars, gamma-ray bursts, quasiperiodic x-ray emission from accretion disks around black holes, and rapid x-ray repeaters. ...
The first cool rocky/icy exoplanet
... host star. But because these planets had to be large to cause an observable Doppler shift, the planetary systems revealed were unlike the solar system; astronomers were faced with massive gas giants in close orbits around their host star. By January 2006, about 170 extrasolar planets were known, of ...
... host star. But because these planets had to be large to cause an observable Doppler shift, the planetary systems revealed were unlike the solar system; astronomers were faced with massive gas giants in close orbits around their host star. By January 2006, about 170 extrasolar planets were known, of ...
Habitability and Stability of Orbits for Earth
... principle possible! The likelihood of those planets is increased if assumed that 47 UMa is relatively young (younger than approximately 6 Gyr) and has a relatively small stellar luminosity as permitted by the observational range of those parameters. We show that the likelihood to nd a habitable Ear ...
... principle possible! The likelihood of those planets is increased if assumed that 47 UMa is relatively young (younger than approximately 6 Gyr) and has a relatively small stellar luminosity as permitted by the observational range of those parameters. We show that the likelihood to nd a habitable Ear ...
Earth - Harding University
... We detect planets around other stars by looking for a periodic motion of the stars they orbit. We measure the motion through the Doppler shift of the star’s ...
... We detect planets around other stars by looking for a periodic motion of the stars they orbit. We measure the motion through the Doppler shift of the star’s ...
File
... presented detailed observations of sunspots, thereby adding his voice, at least in part, to that of Galileo in challenging Aristotelian notions and methods. 1631 -- Pierre Gassendi, familiar with Kepler's astronomical tables, becomes the first to observe a transit of the planet Mercury across the di ...
... presented detailed observations of sunspots, thereby adding his voice, at least in part, to that of Galileo in challenging Aristotelian notions and methods. 1631 -- Pierre Gassendi, familiar with Kepler's astronomical tables, becomes the first to observe a transit of the planet Mercury across the di ...
The Search for Worlds Like Our Own
... those we find in the Jupiter system. Answers as to how large or how small such a world can be and still host life will very likely require empirical data. Acquisition of such data, along with studies that address the prevalence of terrestrial planets, as well as their properties and ability to host ...
... those we find in the Jupiter system. Answers as to how large or how small such a world can be and still host life will very likely require empirical data. Acquisition of such data, along with studies that address the prevalence of terrestrial planets, as well as their properties and ability to host ...
Outline of Lecture on Copernican Revolution: 5b: So, what was
... sun is clearly influenced by Copernicus’ ideas, but in this model of Tycho’s the earth does not move. Tycho believed that the earth was stationary because he could not observe any parallax of any star. ...
... sun is clearly influenced by Copernicus’ ideas, but in this model of Tycho’s the earth does not move. Tycho believed that the earth was stationary because he could not observe any parallax of any star. ...
The gorilla connection
... (Fig. 1a). If the nearer star possesses a planet, it too acts as a lens, altering the light curve accordingly (Fig. 1b). This alteration can be large, even for a low-mass planet, but the deviation lasts for only a matter of hours, so finding and characterizing a planet requires continual monitoring ...
... (Fig. 1a). If the nearer star possesses a planet, it too acts as a lens, altering the light curve accordingly (Fig. 1b). This alteration can be large, even for a low-mass planet, but the deviation lasts for only a matter of hours, so finding and characterizing a planet requires continual monitoring ...
Document
... if a binary companion exists we can constrain its initial configuration of the system based on the Kozai migration, or the system formed through p-p scattering ...
... if a binary companion exists we can constrain its initial configuration of the system based on the Kozai migration, or the system formed through p-p scattering ...
ph709-08-3b - Centre for Astrophysics and Planetary Science
... We have observed four transits of the planet of HD 209458 using the STIS spectrograph on the Hubble Space Telescope (HST). Summing the recorded counts over wavelength between 582 and 638 nm yields a photometric time series with 80 s time sampling and relative precision of about 1.1 × 10-4 per sample ...
... We have observed four transits of the planet of HD 209458 using the STIS spectrograph on the Hubble Space Telescope (HST). Summing the recorded counts over wavelength between 582 and 638 nm yields a photometric time series with 80 s time sampling and relative precision of about 1.1 × 10-4 per sample ...
The Transiting Exoplanet Survey Satellite
... for transiting planets, because they constituted only a small minority of the Kepler target list. Furthermore, the transit signal of a small planet is easier to detect for an M dwarf than it would be for a larger star of the same apparent magnitude, facilitating both planet discovery and follow-up o ...
... for transiting planets, because they constituted only a small minority of the Kepler target list. Furthermore, the transit signal of a small planet is easier to detect for an M dwarf than it would be for a larger star of the same apparent magnitude, facilitating both planet discovery and follow-up o ...
The Search for Another Earth
... Are there planets similar to the Earth? For centuries, these questions baffled curious minds. Either a positive or negative answer, if found one day, would carry a deep philosophical significance for our very existence in the universe. Although the search for extra-terrestrial intelligence was initiate ...
... Are there planets similar to the Earth? For centuries, these questions baffled curious minds. Either a positive or negative answer, if found one day, would carry a deep philosophical significance for our very existence in the universe. Although the search for extra-terrestrial intelligence was initiate ...
Phys 1830: Lecture 33 - University of Manitoba Physics Department
... • Simple one-celled creatures, such as algae, appeared on Earth ~ 3.5 billion years ago. • More complex one-celled creatures, such as amoeba, appeared ~ 2 billion years ago. • Multicellular organisms began to appear ~1 billion years ago. • The entirety of human civilization has been created in the l ...
... • Simple one-celled creatures, such as algae, appeared on Earth ~ 3.5 billion years ago. • More complex one-celled creatures, such as amoeba, appeared ~ 2 billion years ago. • Multicellular organisms began to appear ~1 billion years ago. • The entirety of human civilization has been created in the l ...
Kepler (spacecraft)
Kepler is a space observatory launched by NASA to discover Earth-like planets orbiting other stars. The spacecraft, named after the German Renaissance astronomer Johannes Kepler, was launched on March 7, 2009.Designed to survey a portion of our region of the Milky Way to discover dozens of Earth-size extrasolar planets in or near the habitable zone and estimate how many of the billions of stars in the Milky Way have such planets, Kepler's sole instrument is a photometer that continually monitors the brightness of over 145,000 main sequence stars in a fixed field of view. This data is transmitted to Earth, then analyzed to detect periodic dimming caused by extrasolar planets that cross in front of their host star.Kepler is part of NASA's Discovery Program of relatively low-cost, focused primary science missions. The telescope's construction and initial operation were managed by NASA's Jet Propulsion Laboratory, with Ball Aerospace responsible for developing the Kepler flight system. The Ames Research Center is responsible for the ground system development, mission operations since December 2009, and scientific data analysis. The initial planned lifetime was 3.5 years, but greater-than-expected noise in the data, from both the stars and the spacecraft, meant additional time was needed to fulfill all mission goals. Initially, in 2012, the mission was expected to last until 2016, but this would only have been possible if all remaining reaction wheels used for pointing the spacecraft remained reliable. On May 11, 2013, a second of four reaction wheels failed, disabling the collection of science data and threatening the continuation of the mission.On August 15, 2013, NASA announced that they had given up trying to fix the two failed reaction wheels. This meant the current mission needed to be modified, but it did not necessarily mean the end of planet-hunting. NASA had asked the space science community to propose alternative mission plans ""potentially including an exoplanet search, using the remaining two good reaction wheels and thrusters"". On November 18, 2013, the K2 ""Second Light"" proposal was reported. This would include utilizing the disabled Kepler in a way that could detect habitable planets around smaller, dimmer red dwarfs. On May 16, 2014, NASA announced the approval of the K2 extension.As of January 2015, Kepler and its follow-up observations had found 1,013 confirmed exoplanets in about 440 stellar systems, along with a further 3,199 unconfirmed planet candidates. Four planets have been confirmed through Kepler 's K2 mission. In November 2013, astronomers reported, based on Kepler space mission data, that there could be as many as 40 billion Earth-sized planets orbiting in the habitable zones of Sun-like stars and red dwarfs within the Milky Way. It is estimated that 11 billion of these planets may be orbiting Sun-like stars. The nearest such planet may be 3.7 parsecs (12 ly) away, according to the scientists.On January 6, 2015, NASA announced the 1000th confirmed exoplanet discovered by the Kepler Space Telescope. Four of the newly confirmed exoplanets were found to orbit within habitable zones of their related stars: three of the four, Kepler-438b, Kepler-442b and Kepler-452b, are near-Earth-size and likely rocky; the fourth, Kepler-440b, is a super-Earth.