Stellar Structure and Evolution
... and to Karlheinz Langanke for translating it from the Danish original (‘Stjerneudviklingens slutstadier’). I also thank Langanke for very substantial contributions to the revised Chapters 14 and 15. Discussions with A. V. Sweigart and J. Lattanzio were very helpful in bringing my ideas about late st ...
... and to Karlheinz Langanke for translating it from the Danish original (‘Stjerneudviklingens slutstadier’). I also thank Langanke for very substantial contributions to the revised Chapters 14 and 15. Discussions with A. V. Sweigart and J. Lattanzio were very helpful in bringing my ideas about late st ...
Electronic version
... Within the twenty odd years since the discovery of the seismological relevance of the "five-minute oscillation" stupendous progress has been made in experiment and theory, both qualitatively and quantitatively. This symposium is a comprehensive presentation of the most recent achievements of "Helios ...
... Within the twenty odd years since the discovery of the seismological relevance of the "five-minute oscillation" stupendous progress has been made in experiment and theory, both qualitatively and quantitatively. This symposium is a comprehensive presentation of the most recent achievements of "Helios ...
GAIA A Stereoscopic Census of our Galaxy
... • Detection of 20,000- 30,000 giants to 150-200 pc e.g. 47 UMa: astrometric displacement 360 as ...
... • Detection of 20,000- 30,000 giants to 150-200 pc e.g. 47 UMa: astrometric displacement 360 as ...
Galactic Chemical Evolution and the Oxygen Isotopic Composition
... solar-type stars and its isotopes (16O, 17O, 18O) can be measured (as isotopomers of CO, OH, and H2CO) in the ISM and cores of molecular clouds (MCs). The Sun is the best characterized of all stars and is commonly used as a benchmark for GCE models, based on the assumption that it is typical for its ...
... solar-type stars and its isotopes (16O, 17O, 18O) can be measured (as isotopomers of CO, OH, and H2CO) in the ISM and cores of molecular clouds (MCs). The Sun is the best characterized of all stars and is commonly used as a benchmark for GCE models, based on the assumption that it is typical for its ...
Astronomy 113 Laboratory Manual - UW
... The brightest stars in each constellation are named by a letter of the Greek alphabet and the Latin genitive form of its constellation name. The brightest one gets Alpha, the next brightest gets Beta, then Gamma, Delta, Epsilon, and so on. For example, Polaris is Alpha Ursae Minoris. The brightest s ...
... The brightest stars in each constellation are named by a letter of the Greek alphabet and the Latin genitive form of its constellation name. The brightest one gets Alpha, the next brightest gets Beta, then Gamma, Delta, Epsilon, and so on. For example, Polaris is Alpha Ursae Minoris. The brightest s ...
Structure in the first quadrant of the Galaxy: an analysis of TMGS star
... However, the comparison with the TMGS is possibly the most challenging for the model because its magnitude range, mK 5–9, probes the brightest sources in the LFs of the geometric components such as the arms and bulge. At mK, these LFs are largely unknown, particularly for the arms, but the contras ...
... However, the comparison with the TMGS is possibly the most challenging for the model because its magnitude range, mK 5–9, probes the brightest sources in the LFs of the geometric components such as the arms and bulge. At mK, these LFs are largely unknown, particularly for the arms, but the contras ...
The science case for - Astrophysics
... extrasolar planets, gamma ray bursts, the cosmic microwave background, dark matter and dark energy have all been discovered through the development of a succession of ever larger and more sophisticated telescopes. In the last decade, satellite observatories and the new generation of 8- to 10-metre d ...
... extrasolar planets, gamma ray bursts, the cosmic microwave background, dark matter and dark energy have all been discovered through the development of a succession of ever larger and more sophisticated telescopes. In the last decade, satellite observatories and the new generation of 8- to 10-metre d ...
– 1 – 1. Emission Lines in Nearby Galaxies 1.1.
... A PN consists of material ejected with a modest velocity from an evolved star; the material appears as a shell around the star which is resolved for the nearer objects. The central star is very hot, with Tef f approaching 100,000 K. This means that the gas is highly ionized, much more so than in an ...
... A PN consists of material ejected with a modest velocity from an evolved star; the material appears as a shell around the star which is resolved for the nearer objects. The central star is very hot, with Tef f approaching 100,000 K. This means that the gas is highly ionized, much more so than in an ...
the saptarishis calendar: `the indian tropical zodiac`!
... pointer along the ecliptic. Rather than moving the pointer from one star to another what actually happens is that the tropical zodiac—which is not dependent on the stars—moves against the star-based Saptarishis pointer. 5.3 The Rate of Motion of Saptarishis Since the Saptarishis Calendar is a direct ...
... pointer along the ecliptic. Rather than moving the pointer from one star to another what actually happens is that the tropical zodiac—which is not dependent on the stars—moves against the star-based Saptarishis pointer. 5.3 The Rate of Motion of Saptarishis Since the Saptarishis Calendar is a direct ...
Accuracy of spectroscopy-based radioactive dating of stars
... constitute the dominant ionization stage in the late-type stars of interest here. Moreover, the diagnostic lines of Th and Hf emerge from low lying energy levels which makes the Boltzmann factor and consequently the temperature sensitivity of the level populations modest. The similar atomic properti ...
... constitute the dominant ionization stage in the late-type stars of interest here. Moreover, the diagnostic lines of Th and Hf emerge from low lying energy levels which makes the Boltzmann factor and consequently the temperature sensitivity of the level populations modest. The similar atomic properti ...
Influence of the Gould Belt on Interstellar Extinction
... across the layers varies according to a barometric law. It has been found that the absorbing layers intersect at an angle of 17◦ and that the Sun is located near the axial plane of the absorbing layer of the Gould Belt and is probably several parsecs below the axial plane of the equatorial absorbing ...
... across the layers varies according to a barometric law. It has been found that the absorbing layers intersect at an angle of 17◦ and that the Sun is located near the axial plane of the absorbing layer of the Gould Belt and is probably several parsecs below the axial plane of the equatorial absorbing ...
SXDS Highlights : Subaru / FOCAS Spectroscopy
... Results of “cloning” simulations show if there are large number of elliptical or bulge-dominated galaxies at z~3, they should be detected, and should be fitted well with large n-index. ...
... Results of “cloning” simulations show if there are large number of elliptical or bulge-dominated galaxies at z~3, they should be detected, and should be fitted well with large n-index. ...
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.