Terrestrial Planets
... • No strong selection bias in favour / against detecting planets with different eccentricities Of the first 100 stars found to harbor planets, more than 30 stars host a Jupiter-sized world in an orbit smaller than Mercury's, whizzing around its star in a matter of days. This implies: Planet formatio ...
... • No strong selection bias in favour / against detecting planets with different eccentricities Of the first 100 stars found to harbor planets, more than 30 stars host a Jupiter-sized world in an orbit smaller than Mercury's, whizzing around its star in a matter of days. This implies: Planet formatio ...
Lecture 7: Extrasolar Planets 01/08/2013 update: 725 exoplanets
... • No strong selection bias in favour/against detecting planets with different eccentricities Of the first 100 stars found to harbor planets, more than 30 stars host a Jupiter-sized world in an orbit smaller than Mercury's, whizzing around its star in a matter of days. This implies: Planet formation ...
... • No strong selection bias in favour/against detecting planets with different eccentricities Of the first 100 stars found to harbor planets, more than 30 stars host a Jupiter-sized world in an orbit smaller than Mercury's, whizzing around its star in a matter of days. This implies: Planet formation ...
Science Across Disciplines
... The discovery of extra-solar planets is one of the greatest achievements of modern astronomy. There are now more than two hundred such objects known, and the recent detection of planets with masses approximately 5 times that of Earth demonstrates that extra-solar planets of low mass exist. In additi ...
... The discovery of extra-solar planets is one of the greatest achievements of modern astronomy. There are now more than two hundred such objects known, and the recent detection of planets with masses approximately 5 times that of Earth demonstrates that extra-solar planets of low mass exist. In additi ...
Full Programme and Abstracts - UK Exoplanet community meeting
... perspective of exo-planetary systems, whilst at the same time deepening our knowledge of Earth’s formation. Profound questions still remain as to the origin of Earth’s atmosphere, continents, and habitable climate, questions which are ultimately stymied by having only one natural laboratory in which ...
... perspective of exo-planetary systems, whilst at the same time deepening our knowledge of Earth’s formation. Profound questions still remain as to the origin of Earth’s atmosphere, continents, and habitable climate, questions which are ultimately stymied by having only one natural laboratory in which ...
Preface 1 PDF
... perturbations to the frequencies of these oscillations the rotation of the deep interior can be inferred. Thanks to helioseismology, we know that the Sun rotates as a solid body in the radiative interior and that the convective envelope rotates differentially, with a shear layer in between. Such a s ...
... perturbations to the frequencies of these oscillations the rotation of the deep interior can be inferred. Thanks to helioseismology, we know that the Sun rotates as a solid body in the radiative interior and that the convective envelope rotates differentially, with a shear layer in between. Such a s ...
Rotation, activity, and stellar obliquities in a large uniform sample of
... in solar-like stars in the open cluster M67, which is similar to the Sun in both age and metallicity, while Önehag et al. (2011) performed a differential spectroscopic analysis of a solar analog in the same cluster and found it to be nearly indistinguishable from the Sun. Together, these imply a fun ...
... in solar-like stars in the open cluster M67, which is similar to the Sun in both age and metallicity, while Önehag et al. (2011) performed a differential spectroscopic analysis of a solar analog in the same cluster and found it to be nearly indistinguishable from the Sun. Together, these imply a fun ...
UK Exoplanet community meeting 2017
... perspective of exo-planetary systems, whilst at the same time deepening our knowledge of Earth’s formation. Profound questions still remain as to the origin of Earth’s atmosphere, continents, and habitable climate, questions which are ultimately stymied by having only one natural laboratory in which ...
... perspective of exo-planetary systems, whilst at the same time deepening our knowledge of Earth’s formation. Profound questions still remain as to the origin of Earth’s atmosphere, continents, and habitable climate, questions which are ultimately stymied by having only one natural laboratory in which ...
The Catalina Sky Survey NEO Follow-up
... • 100% dedicated to NEO survey + follow-up • Assets: 3 survey telescopes + 1 follow up telescope • Cadence: 4 x 30 s images, deltaT ~10 min. ...
... • 100% dedicated to NEO survey + follow-up • Assets: 3 survey telescopes + 1 follow up telescope • Cadence: 4 x 30 s images, deltaT ~10 min. ...
A Human-Powered Orrery - Astronomical Society of the Pacific
... 2005 we saw an article and a poster about a Human Orrery constructed at the Armagh Observatory in Northern Ireland (Bailey, et al. 2005a, b, c). However, it was several years before we had the idea and the opportunity for making a Portable Human Orrery we could take with us to a variety of venues. T ...
... 2005 we saw an article and a poster about a Human Orrery constructed at the Armagh Observatory in Northern Ireland (Bailey, et al. 2005a, b, c). However, it was several years before we had the idea and the opportunity for making a Portable Human Orrery we could take with us to a variety of venues. T ...
Extrasolar planets - Astronomisk Ungdom
... As mentioned above a macula can disappear and reappear. However, planets do not vanish from their orbit without a trace or a caveat, except if it is a free planet passing the star, but those are rare and not yet accurately proven. All work around extra solar planets is fairly new and current. At pre ...
... As mentioned above a macula can disappear and reappear. However, planets do not vanish from their orbit without a trace or a caveat, except if it is a free planet passing the star, but those are rare and not yet accurately proven. All work around extra solar planets is fairly new and current. At pre ...
Habitability and Life Parameters in our Solar System
... that habitability would be more likely in the galaxy’s thin disk. However, later research conducted in 2004 by Lineweaver et al. did create boundaries for this annulus, in the case of the Milky Way ranging from 4 kpc to 10 kpc from the galactic center. The Lineweaver team also analyzed the evolution ...
... that habitability would be more likely in the galaxy’s thin disk. However, later research conducted in 2004 by Lineweaver et al. did create boundaries for this annulus, in the case of the Milky Way ranging from 4 kpc to 10 kpc from the galactic center. The Lineweaver team also analyzed the evolution ...
UK Exoplanet community meeting 2017
... perspective of exo-planetary systems, whilst at the same time deepening our knowledge of Earth’s formation. Profound questions still remain as to the origin of Earth’s atmosphere, continents, and habitable climate, questions which are ultimately stymied by having only one natural laboratory in which ...
... perspective of exo-planetary systems, whilst at the same time deepening our knowledge of Earth’s formation. Profound questions still remain as to the origin of Earth’s atmosphere, continents, and habitable climate, questions which are ultimately stymied by having only one natural laboratory in which ...
Summer 2014 Mercury - Astronomical Society of the Pacific
... (1592-1655) wrote a rebuttal the very same year, rightly claiming that the five new moons were just background stars. While his discovery skills may have been wanting, Rheita was a pioneer in optics, as he improved Kepler’s two-lens inverting eyepiece by making it much sharper. He proposed a three-l ...
... (1592-1655) wrote a rebuttal the very same year, rightly claiming that the five new moons were just background stars. While his discovery skills may have been wanting, Rheita was a pioneer in optics, as he improved Kepler’s two-lens inverting eyepiece by making it much sharper. He proposed a three-l ...
DIPLOMA THESIS Spectroscopic study of the star 70 Virginis and its
... spectacular achievements in the extra-solar planets research. While in the middle of 1980’s there were no extra-solar planets proved to be, nowadays (according to [16] The Extrasolar Planets Encyclopedia) more than 240 planets within about 210 star systems are known. This research deals with essenti ...
... spectacular achievements in the extra-solar planets research. While in the middle of 1980’s there were no extra-solar planets proved to be, nowadays (according to [16] The Extrasolar Planets Encyclopedia) more than 240 planets within about 210 star systems are known. This research deals with essenti ...
What is a planet? - X-ray and Observational Astronomy Group
... • The star doing the lensing brightens as a result • We record this brightening, which can last for days • If the lensed star has a planetary companion, the characteristic lensing light curve is modified • Signals from an Earth-like planet would be strong (>5%) but brief (few hours) • 4 planets foun ...
... • The star doing the lensing brightens as a result • We record this brightening, which can last for days • If the lensed star has a planetary companion, the characteristic lensing light curve is modified • Signals from an Earth-like planet would be strong (>5%) but brief (few hours) • 4 planets foun ...
Catching Planets in Formation with GMT
... • Substantial mismatch between predicted and observed distribution of exoplanets. • Major uncertainties: • How do gas-giant planets form. • How much do planets migrate. • Are there many habitable (water, etc) planets. ...
... • Substantial mismatch between predicted and observed distribution of exoplanets. • Major uncertainties: • How do gas-giant planets form. • How much do planets migrate. • Are there many habitable (water, etc) planets. ...
Sample Schedule 2012
... White Dwarfs are the leftover hot core of planetary nebula. They do not have any nuclear fuel so cool down over time. This core is extremely dense and so White Dwarfs have a low surface area and a high mass and a high temperature as the star has a small surface area that heat energy can be lost from ...
... White Dwarfs are the leftover hot core of planetary nebula. They do not have any nuclear fuel so cool down over time. This core is extremely dense and so White Dwarfs have a low surface area and a high mass and a high temperature as the star has a small surface area that heat energy can be lost from ...
The Habitability of Our Earth and Other Earths: Astrophysical
... Once life begins, organisms do not just passively adapt to preexisting environments. They actively change and construct the world they live in (Odling-Smee et al. 2003). The evolutionary history of life on Earth can be written in terms of how organisms have modified their environments. From the oxyge ...
... Once life begins, organisms do not just passively adapt to preexisting environments. They actively change and construct the world they live in (Odling-Smee et al. 2003). The evolutionary history of life on Earth can be written in terms of how organisms have modified their environments. From the oxyge ...
Rotation of KIC 11145123
... trophysical signals with frequencies less than 0.1 d− 1 greater than 10 d). None of the pulsation frequencies in this paper are near to that lower limit, but if the star rotational signal, e.g. from starspots, that will have been he pipeline. Since, as we show, the rotation period is near y data red ...
... trophysical signals with frequencies less than 0.1 d− 1 greater than 10 d). None of the pulsation frequencies in this paper are near to that lower limit, but if the star rotational signal, e.g. from starspots, that will have been he pipeline. Since, as we show, the rotation period is near y data red ...
Atoms and Stars IST 3360 and IST 1990
... • Contribution of Kepler was methods; did not abandon mysticism • Without calculus, Kepler could not see the connections between his three laws • Koestler: “…Kepler set out to discover India and found America.” • Quote from Heinrich Herz (discovered radio ...
... • Contribution of Kepler was methods; did not abandon mysticism • Without calculus, Kepler could not see the connections between his three laws • Koestler: “…Kepler set out to discover India and found America.” • Quote from Heinrich Herz (discovered radio ...
13_Testbank - Lick Observatory
... so the density is M/V = 0.27 grams per cubic centimeter. The average density of Jupiter is 1.33 grams per cubic centimeter, so HD 209458b is five times less dense. This is due to it being "puffed up" from the high temperatures in such a close orbit around its host star. 6) The star Rho Cancri B has ...
... so the density is M/V = 0.27 grams per cubic centimeter. The average density of Jupiter is 1.33 grams per cubic centimeter, so HD 209458b is five times less dense. This is due to it being "puffed up" from the high temperatures in such a close orbit around its host star. 6) The star Rho Cancri B has ...
Other Planetary Systems The New Science of Distant Worlds 13.1
... so the density is M/V = 0.27 grams per cubic centimeter. The average density of Jupiter is 1.33 grams per cubic centimeter, so HD 209458b is five times less dense. This is due to it being "puffed up" from the high temperatures in such a close orbit around its host star. 6) The star Rho Cancri B has ...
... so the density is M/V = 0.27 grams per cubic centimeter. The average density of Jupiter is 1.33 grams per cubic centimeter, so HD 209458b is five times less dense. This is due to it being "puffed up" from the high temperatures in such a close orbit around its host star. 6) The star Rho Cancri B has ...
The Search for Extrasolar Earth-like Planets
... Searching for Earth-like Planets by their Gravitational Influence on the Parent Stars Searches for Earth-mass planets around nonsolar-type stars are underway [13] for short-period Earth-mass planets around the most common type of star: low-mass stars with masses of 0.06 to 0.5 times the mass of the ...
... Searching for Earth-like Planets by their Gravitational Influence on the Parent Stars Searches for Earth-mass planets around nonsolar-type stars are underway [13] for short-period Earth-mass planets around the most common type of star: low-mass stars with masses of 0.06 to 0.5 times the mass of the ...
The New Worlds Observer
... other stars; this can only be done with highcontrast direct imaging. Since NWO has no outer Figure 5: The exozodiacal light can help estimate the inworking angle and produces zero distortions in the clination of the system and therefore constrain planet orfield, exozodiacal light and debris disks wi ...
... other stars; this can only be done with highcontrast direct imaging. Since NWO has no outer Figure 5: The exozodiacal light can help estimate the inworking angle and produces zero distortions in the clination of the system and therefore constrain planet orfield, exozodiacal light and debris disks wi ...
Copernican Revolution
... When a planet undergoes retrograde motion, how does it look? How did the geocentric model explain retrograde motion? How did the heliocentric model explain retrograde motion? What did Brahe contribute to the heliocentric vs. geocentric debate? Define perihelion and aphelion. Considering Kepler's thr ...
... When a planet undergoes retrograde motion, how does it look? How did the geocentric model explain retrograde motion? How did the heliocentric model explain retrograde motion? What did Brahe contribute to the heliocentric vs. geocentric debate? Define perihelion and aphelion. Considering Kepler's thr ...
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.