DSSI at DCT: Superearth Validation with High
... a limiting resolution of 22 milliarcseconds (mas). DSSI has already been on sky in this capacity with WIYN and Gemini-N, detecting faint nearby companions to KOIs. For the brighter KOIs (mag~10-12), we expect a companion detection limit of delta_m=5.5 at 200mas separations, which degrades linearly b ...
... a limiting resolution of 22 milliarcseconds (mas). DSSI has already been on sky in this capacity with WIYN and Gemini-N, detecting faint nearby companions to KOIs. For the brighter KOIs (mag~10-12), we expect a companion detection limit of delta_m=5.5 at 200mas separations, which degrades linearly b ...
ph507weeks1
... parallax accuracy to 0.001” within a few years. Before 1990, fewer than 10,000 stellar parallaxes had been measured (and only 500 known well), but there are about 1012 stars in our Galaxy. Space observations made by the European Space Agency with the Hipparcos mission (1989-1993) accurately determin ...
... parallax accuracy to 0.001” within a few years. Before 1990, fewer than 10,000 stellar parallaxes had been measured (and only 500 known well), but there are about 1012 stars in our Galaxy. Space observations made by the European Space Agency with the Hipparcos mission (1989-1993) accurately determin ...
uniview glossary - DMNS Galaxy Guide Portal
... Saturn was named for the Roman god of agriculture and lies 885 million miles from the Sun, (9.6 AU). Saturn takes 29.5 years to orbit, but only 10.7 hours to rotate (day). Its diameter is 75,000 miles, making it the second largest planet. Its mass is 95 times that of Earth. It is the second of the f ...
... Saturn was named for the Roman god of agriculture and lies 885 million miles from the Sun, (9.6 AU). Saturn takes 29.5 years to orbit, but only 10.7 hours to rotate (day). Its diameter is 75,000 miles, making it the second largest planet. Its mass is 95 times that of Earth. It is the second of the f ...
Jura et al. 2004 - Department of Physics and Astronomy
... There are four stars where we use equation (2) to fit the data, and we thus find a characteristic grain temperature, which, from equation (3), we can translate into a distance from the star. Using the values of Tex and L∗ given in Table 1, we find values for the inner boundary of the dust of 48 AU, ...
... There are four stars where we use equation (2) to fit the data, and we thus find a characteristic grain temperature, which, from equation (3), we can translate into a distance from the star. Using the values of Tex and L∗ given in Table 1, we find values for the inner boundary of the dust of 48 AU, ...
The HIRES science case
... predictions of disc migration. Recent results have shown that hot Jupiter planets on non-coplanar orbits are common, including some planets on retrograde orbits (Triaud et al. 2010). Those measurements have been interpreted as showing that dynamical events are probably not uncommon and that not all ...
... predictions of disc migration. Recent results have shown that hot Jupiter planets on non-coplanar orbits are common, including some planets on retrograde orbits (Triaud et al. 2010). Those measurements have been interpreted as showing that dynamical events are probably not uncommon and that not all ...
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 ...
The Parallax Activity: Measuring the Distances to
... compared to interstellar distances, so parallax angles are smaller than one arcsecond, which is 1/3600 of a degree. 2. An alternative distance measurement for stars used by most astronomers is the parsec. A star with a parallax angle of 1 arcsecond has a ...
... compared to interstellar distances, so parallax angles are smaller than one arcsecond, which is 1/3600 of a degree. 2. An alternative distance measurement for stars used by most astronomers is the parsec. A star with a parallax angle of 1 arcsecond has a ...
July 2014 BRAS Newsletter - The Baton Rouge Astronomical Society
... transiting (passing in front of) their host star as seen from Earth. (For comparison, if Earth transited the Sun as viewed another star system exactly in the plane of Earth’s orbit, the Sun’s light would be dimmed by 100 parts per million—a hundredth of a percent—for about 12 hours once every 365 da ...
... transiting (passing in front of) their host star as seen from Earth. (For comparison, if Earth transited the Sun as viewed another star system exactly in the plane of Earth’s orbit, the Sun’s light would be dimmed by 100 parts per million—a hundredth of a percent—for about 12 hours once every 365 da ...
February 2013 - astronomy for beginners
... brightest stars are called Pollux (β) and Castor (α) and are known as the Gemini Twins. The twins originated in a Greek myth which told that they had one mother but two fathers. Castor was the mortal son of King Tyndareus but Pollux was the immortal son of the God Zeus who had disguised himself as C ...
... brightest stars are called Pollux (β) and Castor (α) and are known as the Gemini Twins. The twins originated in a Greek myth which told that they had one mother but two fathers. Castor was the mortal son of King Tyndareus but Pollux was the immortal son of the God Zeus who had disguised himself as C ...
Astronomy and Survey of Information
... Warning Science Content! • It is impossible to obtain the complete orbit of a spectroscopic binary unless it is also a visual or an eclipsing binary, so from these objects only a determination of the joint product of mass and the sine of the angle of inclination relative to the line of sight is poss ...
... Warning Science Content! • It is impossible to obtain the complete orbit of a spectroscopic binary unless it is also a visual or an eclipsing binary, so from these objects only a determination of the joint product of mass and the sine of the angle of inclination relative to the line of sight is poss ...
The Story of Planet Building
... Task: Create a book that illustrates the story of how our solar system formed. Guidelines & Expectations ___/2 pts.-Title page that includes a title and your name ___/2 pts.- Minimum of 8 pages ___/6 pts.- Book is in correct chronological order ___/6 pts.- All significant steps in the formation of t ...
... Task: Create a book that illustrates the story of how our solar system formed. Guidelines & Expectations ___/2 pts.-Title page that includes a title and your name ___/2 pts.- Minimum of 8 pages ___/6 pts.- Book is in correct chronological order ___/6 pts.- All significant steps in the formation of t ...
Chapter 7 Formation of Stars
... stars near the Orion Nebula. In the top image, the star responsible for the jets is hidden in the dark dust cloud lying in the center of the image. The entire width of this image is about one light year. The Herbig–Haro objects are designated HH-1 and HH-2, and correspond to the nebulosity at the en ...
... stars near the Orion Nebula. In the top image, the star responsible for the jets is hidden in the dark dust cloud lying in the center of the image. The entire width of this image is about one light year. The Herbig–Haro objects are designated HH-1 and HH-2, and correspond to the nebulosity at the en ...
Chapter 8 Formation of Stars
... stars near the Orion Nebula. In the top image, the star responsible for the jets is hidden in the dark dust cloud lying in the center of the image. The entire width of this image is about one light year. The Herbig–Haro objects are designated HH-1 and HH-2, and correspond to the nebulosity at the en ...
... stars near the Orion Nebula. In the top image, the star responsible for the jets is hidden in the dark dust cloud lying in the center of the image. The entire width of this image is about one light year. The Herbig–Haro objects are designated HH-1 and HH-2, and correspond to the nebulosity at the en ...
The Prospective Aspect of the Cosmogonic Models in Laozi and T
... Differs from Astronomical Theory (2/3) 3. In the course of this interstellar cloud’s workings, it may touch the nebular boundary of a neighboring star system, with interactive effects that produce a revolving pattern. – Each clump of interstellar cloud may gain initial angular momentum and projectin ...
... Differs from Astronomical Theory (2/3) 3. In the course of this interstellar cloud’s workings, it may touch the nebular boundary of a neighboring star system, with interactive effects that produce a revolving pattern. – Each clump of interstellar cloud may gain initial angular momentum and projectin ...
The Milky Way
... • Theoretical H-R diagrams have the higher mass stars reaching ZAMS first; It takes 107 years before 2-3 M stars reach ZAMS; • meanwhile highest mass stars have left MS to become SN • by 108 years many high mass stars have become RGs and SGs, but lowest mass stars still not on ZAMS. • By 109 yr all ...
... • Theoretical H-R diagrams have the higher mass stars reaching ZAMS first; It takes 107 years before 2-3 M stars reach ZAMS; • meanwhile highest mass stars have left MS to become SN • by 108 years many high mass stars have become RGs and SGs, but lowest mass stars still not on ZAMS. • By 109 yr all ...
Constituents of the Milky Way
... For individual stars that aren’t in clusters (like the Sun), we can’t use the cluster turnoff method to measure an age. For instance, a lone G star might be young, or it might be 10 billion years old. How do we measure its age? The universe contained only hydrogen, helium, and one other element (lit ...
... For individual stars that aren’t in clusters (like the Sun), we can’t use the cluster turnoff method to measure an age. For instance, a lone G star might be young, or it might be 10 billion years old. How do we measure its age? The universe contained only hydrogen, helium, and one other element (lit ...
The Transit Method
... These can easily be excluded using one spectrum to establish spectral and luminosity class. In principle no radial velocity measurements are required. Often a giant star can be known from the transit time. These are typically several days long! ...
... These can easily be excluded using one spectrum to establish spectral and luminosity class. In principle no radial velocity measurements are required. Often a giant star can be known from the transit time. These are typically several days long! ...
Journey to the Stars Educator`s Guide
... • The stellar life cycle continues today. Stars still form, live, and die. The young Orion Nebula contains one of many clusters of newborn stars in the Milky Way. Some of them are just forming planets. The Pleiades, a mature star cluster, is ejecting stars. The Helix Nebula was expelled by a star at ...
... • The stellar life cycle continues today. Stars still form, live, and die. The young Orion Nebula contains one of many clusters of newborn stars in the Milky Way. Some of them are just forming planets. The Pleiades, a mature star cluster, is ejecting stars. The Helix Nebula was expelled by a star at ...
mufon ufo symposium -1974
... orbit. Stable orbits are difficult to maintain in multiple systems due to multiple and variable gravitational pulls. There is also the possibility that multiple stars may affect each other’s time on the main sequence, shortening the time, so life would have less chance to form. Single stars are much ...
... orbit. Stable orbits are difficult to maintain in multiple systems due to multiple and variable gravitational pulls. There is also the possibility that multiple stars may affect each other’s time on the main sequence, shortening the time, so life would have less chance to form. Single stars are much ...
– 1 – 1. Historical Notes for Ay 123 1.1.
... radiates energy into the surrounding medium. Jupiter also does this, some internal heat is generated due to radioactive decays, but that is much less than the energy it receives from the Sun. Jupiter is not a star. ...
... radiates energy into the surrounding medium. Jupiter also does this, some internal heat is generated due to radioactive decays, but that is much less than the energy it receives from the Sun. Jupiter is not a star. ...
AST4930 Star and Planet Formation
... the actual fraction of stars in multiple systems, its variation with stellar mass (e.g., massive stars more likely to be in multiple systems than low-mass stars), and the companion mass distribution. “stellar IMF” – corrected for multiplicity “system IMF” – uncorrected ...
... the actual fraction of stars in multiple systems, its variation with stellar mass (e.g., massive stars more likely to be in multiple systems than low-mass stars), and the companion mass distribution. “stellar IMF” – corrected for multiplicity “system IMF” – uncorrected ...
Doppler Effect Demo
... that are close to the Milky Way actually move toward us and are blue-shifted. However, all galaxies beyond a certain distance are red-shifted. Is it possible to see any planets orbiting other stars? As of the time of this writing (August 2002) no planets have been directly observed. Most extra-solar ...
... that are close to the Milky Way actually move toward us and are blue-shifted. However, all galaxies beyond a certain distance are red-shifted. Is it possible to see any planets orbiting other stars? As of the time of this writing (August 2002) no planets have been directly observed. Most extra-solar ...
Circular ac
... or nearly 4.5 × 1015 km) from Earth in the constellation Lyra.[1][2] The planet was discovered by NASA's Kepler spacecraft using the transit method, in which the dimming effect that a planet causes as it crosses in front of its star is measured. NASA announced the confirmation of the exoplanet on 6 ...
... or nearly 4.5 × 1015 km) from Earth in the constellation Lyra.[1][2] The planet was discovered by NASA's Kepler spacecraft using the transit method, in which the dimming effect that a planet causes as it crosses in front of its star is measured. NASA announced the confirmation of the exoplanet on 6 ...
DATA FROM CATALOGUES OF SOLAR SYSTEM OBJECTS IN
... application (on Fig. 1) teacher/student can demonstrate the position of Earth, Sun and minor planet during the discovery. This date is listed in the table above. All these result could vary time to time because list of minor planets are regularly (monthly) updated. It is basically up to teacher how ...
... application (on Fig. 1) teacher/student can demonstrate the position of Earth, Sun and minor planet during the discovery. This date is listed in the table above. All these result could vary time to time because list of minor planets are regularly (monthly) updated. It is basically up to teacher how ...
Planetary system
A planetary system is a set of gravitationally bound non-stellar objects in orbit around a star or star system. Generally speaking, systems with one or more planets constitute a planetary system, although such systems may also consist of bodies such as dwarf planets, asteroids, natural satellites, meteoroids, comets, planetesimals and circumstellar disks. The Sun together with its planetary system, which includes Earth, is known as the Solar System. The term exoplanetary system is sometimes used in reference to other planetary systems.A total of 1968 exoplanets (in 1248 planetary systems, including 490 multiple planetary systems) have been identified as of 1 October 2015.Of particular interest to astrobiology is the habitable zone of planetary systems where planets could have surface liquid water.