Script Chapter 7 part 2
... Before 1980 there existed only indirect evidence about the presence of circumstellar disk around young stars. In the 1980’s collimated outflows, so-called jets, could be clearly associated with young stars (Slide 7.5). Jets are a well known phenomenon of accretion disks in active galactic nuclei and ...
... Before 1980 there existed only indirect evidence about the presence of circumstellar disk around young stars. In the 1980’s collimated outflows, so-called jets, could be clearly associated with young stars (Slide 7.5). Jets are a well known phenomenon of accretion disks in active galactic nuclei and ...
Article PDF - IOPscience
... semimajor axis of 3.73 AU. A good test of an orbital solution is its ability to predict future velocities. To compare the predictive power of the single- and double-Keplerian models, we considered only the data obtained before 1999 May. By that time, the singleKeplerian Ðt was already beginning to f ...
... semimajor axis of 3.73 AU. A good test of an orbital solution is its ability to predict future velocities. To compare the predictive power of the single- and double-Keplerian models, we considered only the data obtained before 1999 May. By that time, the singleKeplerian Ðt was already beginning to f ...
Document
... Vb10 was purported to be the first astrometric detection of a planet. Prada and Shalkan 2009 claimed to have found a planet using the STEPS: A CCD camera mounted on the Palomar 5m. 9 years of data were obtained. ...
... Vb10 was purported to be the first astrometric detection of a planet. Prada and Shalkan 2009 claimed to have found a planet using the STEPS: A CCD camera mounted on the Palomar 5m. 9 years of data were obtained. ...
The Star Finder Book - Starpath School of Navigation
... recurring questions. We especially appreciate questions and comments of former students after they navigate their first ocean crossing. Comments from new navigators are invaluable to the development of teaching methods and course materials. This booklet is one example. Most discoveries of new naviga ...
... recurring questions. We especially appreciate questions and comments of former students after they navigate their first ocean crossing. Comments from new navigators are invaluable to the development of teaching methods and course materials. This booklet is one example. Most discoveries of new naviga ...
A search for debris disks in the Herschel
... account for the bluer stars in the sample. In the H-ATLAS SD field for maximum distances of 200, 150, 80 and 50 pc (i.e. sensitive to HR 4796, Beta Pictoris, Fomalhaut and Vega analogues) we find a total of 851, 340, 31 and 9 stars respectively on the main sequence locus. There are no stars on this ...
... account for the bluer stars in the sample. In the H-ATLAS SD field for maximum distances of 200, 150, 80 and 50 pc (i.e. sensitive to HR 4796, Beta Pictoris, Fomalhaut and Vega analogues) we find a total of 851, 340, 31 and 9 stars respectively on the main sequence locus. There are no stars on this ...
aaswinter07ppt
... • Evidence for a hot, blue companion (B3 V) was discovered when V838 Mon cooled (10,11). The progenitor of the outbursting component has been estimated to be 1) a very massive (65 Msolar), hot (Teff ~ 50,000 K), evolved star such as a Wolf-Rayet star (7); or 2) a main sequence or pre-main sequence s ...
... • Evidence for a hot, blue companion (B3 V) was discovered when V838 Mon cooled (10,11). The progenitor of the outbursting component has been estimated to be 1) a very massive (65 Msolar), hot (Teff ~ 50,000 K), evolved star such as a Wolf-Rayet star (7); or 2) a main sequence or pre-main sequence s ...
SQL
... This database contains information on planets that have been discovered outside the solar system. For each planet, we know the planet name, the name of the star that the planet orbits, the name of the constellation that the star is in, the year the planet was discovered, the distance of the planet f ...
... This database contains information on planets that have been discovered outside the solar system. For each planet, we know the planet name, the name of the star that the planet orbits, the name of the constellation that the star is in, the year the planet was discovered, the distance of the planet f ...
Dust processing in debris disks - Max-Planck
... β = Frad/Fgrav ≈ (0.4/D)(L*/M*) β>0.5 blown out on hyperbolic orbits ...
... β = Frad/Fgrav ≈ (0.4/D)(L*/M*) β>0.5 blown out on hyperbolic orbits ...
The Search for Rocky Planets Around the Nearest Stars
... sensitive to terrestrial-mass planets in orbits out to several tenths of an AU, including the habitable zone for K and M dwarfs. Since these would be dedicated telescopes outfitted with identical echelle spectrometers, the cost would be significantly smaller than two general-purpose 8 m telescopes o ...
... sensitive to terrestrial-mass planets in orbits out to several tenths of an AU, including the habitable zone for K and M dwarfs. Since these would be dedicated telescopes outfitted with identical echelle spectrometers, the cost would be significantly smaller than two general-purpose 8 m telescopes o ...
A dust ring around Epsilon Eridani: analogue to the young Solar
... 1984; Jayawardhana et al. 1998; Koerner et al. 1998). Unexpected features are now emerging, including secondary dust spots around Vega and β Pic (Holland et al. 1998a), and these have yet to be explained by planet formation theories. So far, there is little evidence for analogues of the Solar System ...
... 1984; Jayawardhana et al. 1998; Koerner et al. 1998). Unexpected features are now emerging, including secondary dust spots around Vega and β Pic (Holland et al. 1998a), and these have yet to be explained by planet formation theories. So far, there is little evidence for analogues of the Solar System ...
Black Hole Accretion
... GRS 1915+105 with a* 1 is an exceptional system – has powerful jets (Lecture 3) Several more BH spins likely to be measured in a few years But more work needed to establish the reliability of the method ...
... GRS 1915+105 with a* 1 is an exceptional system – has powerful jets (Lecture 3) Several more BH spins likely to be measured in a few years But more work needed to establish the reliability of the method ...
ppt
... Up until now astrometric measurements have only detected known exoplanets. Vb10 was purported to be the first astrometric detection of a planet. Prada and Shalkan 2009 claimed to have found a planet using the STEPS: A CCD camera mounted on the Palomar 5m. 9 years of data were obtained. ...
... Up until now astrometric measurements have only detected known exoplanets. Vb10 was purported to be the first astrometric detection of a planet. Prada and Shalkan 2009 claimed to have found a planet using the STEPS: A CCD camera mounted on the Palomar 5m. 9 years of data were obtained. ...
American Scientist
... appear to lie roughly in the same orbital plane. The Kepler-16 system consists of a pair of stars orbited by a Saturnlike exoplanet, a harsh environment for any exoplanet to survive in because of the enhanced gravitational tugs of the stars. A diminutive red dwarf sits at the center of the Kepler-3 ...
... appear to lie roughly in the same orbital plane. The Kepler-16 system consists of a pair of stars orbited by a Saturnlike exoplanet, a harsh environment for any exoplanet to survive in because of the enhanced gravitational tugs of the stars. A diminutive red dwarf sits at the center of the Kepler-3 ...
AST_s309_ss11_4 - University of Texas at Austin
... e Eri p = 0.3107 arcsec (parallax) a = 2.2 mas (semi-major axis) i = 30° (inclination) ...
... e Eri p = 0.3107 arcsec (parallax) a = 2.2 mas (semi-major axis) i = 30° (inclination) ...
10/17/2015 1 The Origin of the Solar System Chapter 10
... Most confirmed extrasolar planets have now been found using speace-based missions such as COROT (launched December 2006) and Kepler (launched March 2009) are the two currently active space missions dedicated to searching for extrasolar planets. The Hubble Space Telescope and MOST have also found or ...
... Most confirmed extrasolar planets have now been found using speace-based missions such as COROT (launched December 2006) and Kepler (launched March 2009) are the two currently active space missions dedicated to searching for extrasolar planets. The Hubble Space Telescope and MOST have also found or ...
ExtraSolar Planets – Student Guide
... about 3 m/s. Do you believe that the theoretical curve could be determined from the measurements in this case? (Advice: check and uncheck the show theoretical curve checkbox and ask yourself whether the curve could reasonably be inferred from the measurements.) Explain. ...
... about 3 m/s. Do you believe that the theoretical curve could be determined from the measurements in this case? (Advice: check and uncheck the show theoretical curve checkbox and ask yourself whether the curve could reasonably be inferred from the measurements.) Explain. ...
Solar System
... (size, mass and distance from star) Cold Jupiter – gas giants with masses similar to or larger than Jupiter; orbits in the outer and colder parts of the systems Hot Jupiter – gas giants with masses similar to or larger than Jupiter; on close-in orbits (<0.1 AU) with high equilibrium temperatures (up ...
... (size, mass and distance from star) Cold Jupiter – gas giants with masses similar to or larger than Jupiter; orbits in the outer and colder parts of the systems Hot Jupiter – gas giants with masses similar to or larger than Jupiter; on close-in orbits (<0.1 AU) with high equilibrium temperatures (up ...
MS Word version
... about 3 m/s. Do you believe that the theoretical curve could be determined from the measurements in this case? (Advice: check and uncheck the show theoretical curve checkbox and ask yourself whether the curve could reasonably be inferred from the measurements.) Explain. ...
... about 3 m/s. Do you believe that the theoretical curve could be determined from the measurements in this case? (Advice: check and uncheck the show theoretical curve checkbox and ask yourself whether the curve could reasonably be inferred from the measurements.) Explain. ...
ExtraSolar Planets – Student Guide
... about 3 m/s. Do you believe that the theoretical curve could be determined from the measurements in this case? (Advice: check and uncheck the show theoretical curve checkbox and ask yourself whether the curve could reasonably be inferred from the measurements.) Explain. ...
... about 3 m/s. Do you believe that the theoretical curve could be determined from the measurements in this case? (Advice: check and uncheck the show theoretical curve checkbox and ask yourself whether the curve could reasonably be inferred from the measurements.) Explain. ...
Extrasolar Planets
... stars and several times more massive than Jupiter. This technique cannot detect smaller worlds. With the best spectroscopes, astronomers can detect motions of about 15 meters/second. Earth only forces the Sun to move at 0.1 meters/second. ...
... stars and several times more massive than Jupiter. This technique cannot detect smaller worlds. With the best spectroscopes, astronomers can detect motions of about 15 meters/second. Earth only forces the Sun to move at 0.1 meters/second. ...
Extrasolarplanets
... • Extrasolar systems have Jovian planets orbiting close to their stars. – Theory predicts Jovian planets form in cold, outer regions. ...
... • Extrasolar systems have Jovian planets orbiting close to their stars. – Theory predicts Jovian planets form in cold, outer regions. ...
The Transit Method
... System. Despite their indistinguishable masses, these two planets probably have very different compositions. Predicted16 radii as a function of mass are shown for assumed compositions of H/He (solid line), pure H2O (dashed line), a hypothetical16 water-dominated world (75% H2O, 22% Si and 3% Fe core ...
... System. Despite their indistinguishable masses, these two planets probably have very different compositions. Predicted16 radii as a function of mass are shown for assumed compositions of H/He (solid line), pure H2O (dashed line), a hypothetical16 water-dominated world (75% H2O, 22% Si and 3% Fe core ...
How Common Are Planets Around Other Stars? Transiting
... • Blending brighter star can mimic planetary signal. used the binary statistics to estimate • We that the blending fraction is less than one. ...
... • Blending brighter star can mimic planetary signal. used the binary statistics to estimate • We that the blending fraction is less than one. ...
Beta Pictoris
Beta Pictoris (β Pic, β Pictoris) is the second brightest star in the constellation Pictor. It is located 63.4 light years from our solar system, and is 1.75 times as massive and 8.7 times as luminous as the Sun. The Beta Pictoris system is very young, only 8–20 million years old, although it is already in the main sequence stage of its evolution. Beta Pictoris is the title member of the Beta Pictoris moving group, an association of young stars which share the same motion through space and have the same age.Beta Pictoris shows an excess of infrared emission compared to normal stars of its type, which is caused by large quantities of dust and gas (including carbon monoxide) near the star. Detailed observations reveal a large disk of dust and gas orbiting the star, which was the first debris disk to be imaged around another star. In addition to the presence of several planetesimal belts and cometary activity, there are indications that planets have formed within this disk and that the processes of planet formation may still be ongoing. Material from the Beta Pictoris debris disk is thought to be the dominant source of interstellar meteoroids in our solar system.The European Southern Observatory (ESO) has confirmed the presence of a planet, Beta Pictoris b, matching previous predictions, through the use of direct imagery, orbiting in the plane of the debris disk surrounding the star. This planet is currently the closest extrasolar planet to its star ever photographed: the observed separation is roughly the same as the distance between Saturn and the Sun.