exoplanets
... Extrasolar Planets What’s an Extrasolar Planet? •An extrasolar planet is a planet that goes around another star •A star is something that is hot enough to fuse hydrogen •More on this later •A brown dwarf is too small to be a star, and too large to be a planet •A planet is something that is large eno ...
... Extrasolar Planets What’s an Extrasolar Planet? •An extrasolar planet is a planet that goes around another star •A star is something that is hot enough to fuse hydrogen •More on this later •A brown dwarf is too small to be a star, and too large to be a planet •A planet is something that is large eno ...
without video - Scott Marley
... Pulsar timing can detect planets less than a 10th of the mass of Earth. Unfortunately these planets would not be habitable. ...
... Pulsar timing can detect planets less than a 10th of the mass of Earth. Unfortunately these planets would not be habitable. ...
A105 –Stars and Galaxies
... Estimate the period of the orbit (the time for one complete orbit, or the time between maximums (or minimums) in the velocity curve). What is the length of the “year” of 51 Peg’s planet? Next, estimate the mass of 51 Peg’s planet. The following graph relates the mass of the planet to the range of ve ...
... Estimate the period of the orbit (the time for one complete orbit, or the time between maximums (or minimums) in the velocity curve). What is the length of the “year” of 51 Peg’s planet? Next, estimate the mass of 51 Peg’s planet. The following graph relates the mass of the planet to the range of ve ...
Document
... should swept-up equal areas in any given period of time. [1A] It means that when Halley is furthest away from the Sun, its speed must be lower than the speed it has when it is closest to the Sun. [1A] Therefore, Kc – Kf > 0。 [1A] ...
... should swept-up equal areas in any given period of time. [1A] It means that when Halley is furthest away from the Sun, its speed must be lower than the speed it has when it is closest to the Sun. [1A] Therefore, Kc – Kf > 0。 [1A] ...
Earth-sized planet found just outside solar system
... Alpha Centauri is one of the brightest stars in the southern skies and is the nearest stellar system to our Solar System—only 4.3 light-years away. It is actually a triple star—a system consisting of two stars similar to the Sun orbiting close to each other, designated Alpha Centauri A and B, and a ...
... Alpha Centauri is one of the brightest stars in the southern skies and is the nearest stellar system to our Solar System—only 4.3 light-years away. It is actually a triple star—a system consisting of two stars similar to the Sun orbiting close to each other, designated Alpha Centauri A and B, and a ...
kepler` s laws
... seventeen century, observations were made with the naked eye. Nonetheless, with great patience and ingenuity, astronomers were able to chart the motion of many stars and planets across the sky. Tycho Brahe, a Danish astronomer (1546-1601), was credited to have made very careful observations of the m ...
... seventeen century, observations were made with the naked eye. Nonetheless, with great patience and ingenuity, astronomers were able to chart the motion of many stars and planets across the sky. Tycho Brahe, a Danish astronomer (1546-1601), was credited to have made very careful observations of the m ...
Methods for the detection of exoplanets
... may eventually be able to locate Earth-sized planets around other stars and take either visible or thermal-IR spectra of their atmospheres • O2 (or O3) and CH4 have absorption bands in both wavelength regions that may be used as potential indicators of extraterrestrial life ...
... may eventually be able to locate Earth-sized planets around other stars and take either visible or thermal-IR spectra of their atmospheres • O2 (or O3) and CH4 have absorption bands in both wavelength regions that may be used as potential indicators of extraterrestrial life ...
Another Earth in the Universe
... too early to give an answer, and its position in the habitable zone does not guarantee that the planet is habitable. For example even Mars, in our Solar System, is in the habitable zone, but we know that the Red Planet has no life on it. This is because, as Thomas Barclay, researcher at the Bay Area ...
... too early to give an answer, and its position in the habitable zone does not guarantee that the planet is habitable. For example even Mars, in our Solar System, is in the habitable zone, but we know that the Red Planet has no life on it. This is because, as Thomas Barclay, researcher at the Bay Area ...
An exceptional planetary system discovered in Cassiopeia by
... An exceptional planetary system discovered in Cassiopeia by astronomers of UNIGE The closest transiting rocky planet ...
... An exceptional planetary system discovered in Cassiopeia by astronomers of UNIGE The closest transiting rocky planet ...
Astrobiology News for July 2013: What Makes a Planet Habitable
... by an inner and outer orbit within which there could be stable surface water on a planet (sometimes called the “Goldilocks Zone”). Closer to the star, the water boils; further away, it freezes. Simpl ...
... by an inner and outer orbit within which there could be stable surface water on a planet (sometimes called the “Goldilocks Zone”). Closer to the star, the water boils; further away, it freezes. Simpl ...
Exoplanets
... • So, we have to detect changes in wavelength of spectral lines of less than one part in 107 to measure this! • Massive, close-in gas giants are much easier to detect ...
... • So, we have to detect changes in wavelength of spectral lines of less than one part in 107 to measure this! • Massive, close-in gas giants are much easier to detect ...
Chapter 3: the Sun
... orbited by a massive, young (therefore warm) planet at a distance of approximately 20 times the distance between Jupiter and our Sun. ...
... orbited by a massive, young (therefore warm) planet at a distance of approximately 20 times the distance between Jupiter and our Sun. ...
Astronomy Assignment #1
... The Radial Velocity Method can determine (1) the period of the planets orbit, (2) the semi-major axis of the planets orbit, (3) the eccentricity of the planet’s orbit, and (4) a minimum mass of the planet. 5. What exoplanet detection methods could detect Earth-mass or Earth-size exoplanets? Why woul ...
... The Radial Velocity Method can determine (1) the period of the planets orbit, (2) the semi-major axis of the planets orbit, (3) the eccentricity of the planet’s orbit, and (4) a minimum mass of the planet. 5. What exoplanet detection methods could detect Earth-mass or Earth-size exoplanets? Why woul ...
Students Find Jupiter-sized Oddball Planet
... professional teams announced their own observations of the same transit. We are very encouraged that our results compare so favourably with those obtained from bigger European facilities, and that our results constrain tightly the nature of HD 80606b and its unusual orbit." "For example, spectroscop ...
... professional teams announced their own observations of the same transit. We are very encouraged that our results compare so favourably with those obtained from bigger European facilities, and that our results constrain tightly the nature of HD 80606b and its unusual orbit." "For example, spectroscop ...
157a_midterm_2016
... Tday 1200 K Tnight 900 K Rp 89000 km Orbit radius 47 108 m emissivity 0.3 We are observing this system from a long distance, so we cannot resolve individual details. Plot the relative intensity that we would observe as a function of time (i.e. as a function of the planet position in its o ...
... Tday 1200 K Tnight 900 K Rp 89000 km Orbit radius 47 108 m emissivity 0.3 We are observing this system from a long distance, so we cannot resolve individual details. Plot the relative intensity that we would observe as a function of time (i.e. as a function of the planet position in its o ...
finding masses of extrasolar planets
... Each of the various techniques for finding extrasolar planets also provides extra information about the planets and their stars. For example, the Doppler technique gives us information about the star’s velocity toward or away from us, and from this we can find it’s mass. It is possible to calculate ...
... Each of the various techniques for finding extrasolar planets also provides extra information about the planets and their stars. For example, the Doppler technique gives us information about the star’s velocity toward or away from us, and from this we can find it’s mass. It is possible to calculate ...
`earthlike` and second the probability that they have suitable climate
... which are ‘earthlike’ and second the probability that they have suitable climate. ...
... which are ‘earthlike’ and second the probability that they have suitable climate. ...
Word doc - UC-HiPACC - University of California, Santa Cruz
... Well, in the ongoing exoplanet version of the game “can you top this?” comes another phenomenal feat: discerning the weather on a distant exoplanet—including sensing water vapor in its atmosphere. The planet is WASP-43b, orbiting a deep orange dwarf (at spectral class K7, as orange as a star can be ...
... Well, in the ongoing exoplanet version of the game “can you top this?” comes another phenomenal feat: discerning the weather on a distant exoplanet—including sensing water vapor in its atmosphere. The planet is WASP-43b, orbiting a deep orange dwarf (at spectral class K7, as orange as a star can be ...
From Big bang to lives on planets
... Mercury, and have periods less than 10 days! • What is going on? This is a subject of much current research. • The discovery of extrasolar planets has great interest in the possibility of extraterrestrial life. As of September 2010, Gliese 581 g, fourth planet of the red dwarf star Gliese 581, appea ...
... Mercury, and have periods less than 10 days! • What is going on? This is a subject of much current research. • The discovery of extrasolar planets has great interest in the possibility of extraterrestrial life. As of September 2010, Gliese 581 g, fourth planet of the red dwarf star Gliese 581, appea ...
Quantum Well Electron Gain Structures and Infrared Detector Arrays
... • At that location, expected temperature is VERY high (about 2000K or higher!) • So … Jupiter-like planet, but closer than Mercury “Hot Jupiter” • How do you make something like that???? ...
... • At that location, expected temperature is VERY high (about 2000K or higher!) • So … Jupiter-like planet, but closer than Mercury “Hot Jupiter” • How do you make something like that???? ...
Is Pluto a Planet? AST 248
... Planets • Do not support Deuterium fusion • Less massive than Brown dwarfs • M < 0.013 M ~ 13 MJupiter • Form in disks surrounding stars ...
... Planets • Do not support Deuterium fusion • Less massive than Brown dwarfs • M < 0.013 M ~ 13 MJupiter • Form in disks surrounding stars ...
the california planet survey. i. four new giant exoplanets
... * The analysis yields a best-fit estimate of several important observables e.g. the effective temperature * The luminosity of each star was determined from the apparent V-band magnitude, the bolometric correction and the parallax from Hipparcos. * From the effective temperature and the luminosity on ...
... * The analysis yields a best-fit estimate of several important observables e.g. the effective temperature * The luminosity of each star was determined from the apparent V-band magnitude, the bolometric correction and the parallax from Hipparcos. * From the effective temperature and the luminosity on ...
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.