Transiting exoplanets from the CoRoT space mission
... Since the beginning of 2007, the space mission CoRoT performs wide-field stellar photometry at ultra-high precision from space (Rouan et al. 1998; Baglin et al. 2006). Currently, during an observing run up to 6,000 stars1 can be monitored simultaneously and continuously over periods of 20 to 150 day ...
... Since the beginning of 2007, the space mission CoRoT performs wide-field stellar photometry at ultra-high precision from space (Rouan et al. 1998; Baglin et al. 2006). Currently, during an observing run up to 6,000 stars1 can be monitored simultaneously and continuously over periods of 20 to 150 day ...
Star Formation in Bok Globules - European Southern Observatory
... radiation fram the star is being absorbed in this shell, wh ich reemits it as infrared radiation. Its visual magnitude varies by several tenths of a magnitude in an irregular manner on timescales of days, while its infrared magnitudes have been constant over nearly two years. The luminosity of Serne ...
... radiation fram the star is being absorbed in this shell, wh ich reemits it as infrared radiation. Its visual magnitude varies by several tenths of a magnitude in an irregular manner on timescales of days, while its infrared magnitudes have been constant over nearly two years. The luminosity of Serne ...
PLANETS
... star HD 209458 was shown to indicate the presence of a large exoplanet in transit across its surface from the perspective of Earth (1.7% dimming). Subsequent spectroscopic studies with the Hubble Space Telescope have even indicated that the exoplanet's atmosphere must have sodium vapor in it. The pl ...
... star HD 209458 was shown to indicate the presence of a large exoplanet in transit across its surface from the perspective of Earth (1.7% dimming). Subsequent spectroscopic studies with the Hubble Space Telescope have even indicated that the exoplanet's atmosphere must have sodium vapor in it. The pl ...
A Walk through the Southern Sky: A Guide to Stars and
... Rigel is actually thousands of times brighter than Sirius. It appears fainter because it is over a thousand light years away, while Sirius is only 81⁄2 light years from us. We measure the brightness of the stars as seen with the naked eye on a scale called the magnitude scale. Hipparchus, a Greek as ...
... Rigel is actually thousands of times brighter than Sirius. It appears fainter because it is over a thousand light years away, while Sirius is only 81⁄2 light years from us. We measure the brightness of the stars as seen with the naked eye on a scale called the magnitude scale. Hipparchus, a Greek as ...
s-process
... -2.1, when low-mass AGB stars begin to contribute from double shell burning. The s-process then dominates Ba production. The origin of heavy metals at the lowest Galactic metallicity ([Fe/H] = -4) is still not understood, but may be dominated by the weak s-process, or by a separate r-process in mass ...
... -2.1, when low-mass AGB stars begin to contribute from double shell burning. The s-process then dominates Ba production. The origin of heavy metals at the lowest Galactic metallicity ([Fe/H] = -4) is still not understood, but may be dominated by the weak s-process, or by a separate r-process in mass ...
PH607lec12-5gal3
... resists the spiral’s tendency to wind up and causes a rigidly rotating spiral pattern Properties of spiral arms can be explained if they are not rotating with the stars, but rather density waves: • Spiral arms are locations where the stellar orbits are such that stars are more densely packed. • Gas ...
... resists the spiral’s tendency to wind up and causes a rigidly rotating spiral pattern Properties of spiral arms can be explained if they are not rotating with the stars, but rather density waves: • Spiral arms are locations where the stellar orbits are such that stars are more densely packed. • Gas ...
First Light for May, 2001 - South Bay Astronomical Society
... The transit method can only find systems that are aligned with our line of sight. The Stellar Wobble Method can find planetary systems that are not fully aligned with our line of sight but still have a component that provides a relative motion towards or away from Earth. Thus, the Wobble method pro ...
... The transit method can only find systems that are aligned with our line of sight. The Stellar Wobble Method can find planetary systems that are not fully aligned with our line of sight but still have a component that provides a relative motion towards or away from Earth. Thus, the Wobble method pro ...
Planetarium_Exercises - Illinois State University
... 5. Circumpolar stars can be found in our ( northern / southern ) sky while equatorial stars ca be found in our ( northern / southern ) sky. 6. At the equator the celestial poles can be found on the north and south ____________. 7. Are the stars seen at the equator all circumpolar or equatorial or a ...
... 5. Circumpolar stars can be found in our ( northern / southern ) sky while equatorial stars ca be found in our ( northern / southern ) sky. 6. At the equator the celestial poles can be found on the north and south ____________. 7. Are the stars seen at the equator all circumpolar or equatorial or a ...
Closed Loop Performance
... At 1000 Hz closed loop we can achieve 65 nm rms error in tower ~95nm “on-sky”. NOTE that this is a linear stretch. This is much better than the 190 nm rms ...
... At 1000 Hz closed loop we can achieve 65 nm rms error in tower ~95nm “on-sky”. NOTE that this is a linear stretch. This is much better than the 190 nm rms ...
Milky Way inner halo reveals its age | COSMOS magazine
... burnt up all their fuel and lost their outer layers. The centre of the star becomes white hot before cooling over many years. “White dwarfs are remarkable objects,” said Kalirai. “They contain approximately the mass of the Sun in a volume that is the size of the Earth. This means they are very dense ...
... burnt up all their fuel and lost their outer layers. The centre of the star becomes white hot before cooling over many years. “White dwarfs are remarkable objects,” said Kalirai. “They contain approximately the mass of the Sun in a volume that is the size of the Earth. This means they are very dense ...
Automated Detection and Analysis of Meteor Events Using Nightly
... sky and are more popularly known as “shooting stars”. I used an all-sky camera to observe these meteors. The all-sky camera is a low light sensitive camera with a fish-eye lens so it can observe the whole night sky. If a meteor occurs, the ASGARD motion detection program saves a video of the event a ...
... sky and are more popularly known as “shooting stars”. I used an all-sky camera to observe these meteors. The all-sky camera is a low light sensitive camera with a fish-eye lens so it can observe the whole night sky. If a meteor occurs, the ASGARD motion detection program saves a video of the event a ...
Science and the Universe - Wayne State University Physics and
... At distances of about 10 to 15 million LY, one finds other small galaxy groups or clusters At about 50 million LY, one finds a very large cluster containing thousands of galaxies, called the Virgo Cluster Some of the observed clusters appear to form superclusters Our Local Group and the Virgo Cluste ...
... At distances of about 10 to 15 million LY, one finds other small galaxy groups or clusters At about 50 million LY, one finds a very large cluster containing thousands of galaxies, called the Virgo Cluster Some of the observed clusters appear to form superclusters Our Local Group and the Virgo Cluste ...
Archaeoastronomy, Astronomy of Celts, A. Gaspani
... obviously unknown to the Druids, we suggest that the methodology for the processing of the information obtained by continuous observations follows the so called recursive learning based on stochastic estimation. This methodology is required because the gained information is corrupted by inherent err ...
... obviously unknown to the Druids, we suggest that the methodology for the processing of the information obtained by continuous observations follows the so called recursive learning based on stochastic estimation. This methodology is required because the gained information is corrupted by inherent err ...
Elliptical Galaxies
... lenticular galaxies because they are shaped like a lens in a magnfiying glass. The description is made up of the "S", meaning lenticular, the "0", meaning no arms, and the subscript number indicates how heavily a stripe is absorbed out of the image of the galaxy by dust in the galactic disc. ...
... lenticular galaxies because they are shaped like a lens in a magnfiying glass. The description is made up of the "S", meaning lenticular, the "0", meaning no arms, and the subscript number indicates how heavily a stripe is absorbed out of the image of the galaxy by dust in the galactic disc. ...
Ursa Minor
Ursa Minor (Latin: ""Smaller She-Bear"", contrasting with Ursa Major), also known as the Little Bear, is a constellation in the northern sky. Like the Great Bear, the tail of the Little Bear may also be seen as the handle of a ladle, hence the name Little Dipper. It was one of the 48 constellations listed by the 2nd-century astronomer Ptolemy, and remains one of the 88 modern constellations. Ursa Minor has traditionally been important for navigation, particularly by mariners, due to Polaris being the North Star.Polaris, the brightest star in the constellation, is a yellow-white supergiant and the brightest Cepheid variable star in the night sky, ranging from apparent magnitude 1.97 to 2.00. Beta Ursae Minoris, also known as Kochab, is an aging star that has swollen and cooled to become an orange giant with an apparent magnitude of 2.08, only slightly fainter than Polaris. Kochab and magnitude 3 Gamma Ursae Minoris have been called the ""guardians of the pole star"". Planets have been detected orbiting four of the stars, including Kochab. The constellation also contains an isolated neutron star—Calvera—and H1504+65, the hottest white dwarf yet discovered with a surface temperature of 200,000 K.