No Slide Title
... Consider two stars in the constellation Pasta Major: alpha Tortellini (bright in the UV, dim in the IR) beta Linguini (dim in the UV, bright in the IR) Which star is hotter? a) alpha Tortellini b) beta Linguini c) too little information to answer ...
... Consider two stars in the constellation Pasta Major: alpha Tortellini (bright in the UV, dim in the IR) beta Linguini (dim in the UV, bright in the IR) Which star is hotter? a) alpha Tortellini b) beta Linguini c) too little information to answer ...
High precision effective temperatures for 181 F-
... between A0 and K3 by using IRFM and achieved an accuracy of 0.9%. DB98 derived Teff for 537 dwarfs and giants by the empirical method of surface brightness and Johnson broadband (V − K) color, the accuracy claimed is ±1%. Whenever 2 or 3 estimates were available for a given star, we averaged them wi ...
... between A0 and K3 by using IRFM and achieved an accuracy of 0.9%. DB98 derived Teff for 537 dwarfs and giants by the empirical method of surface brightness and Johnson broadband (V − K) color, the accuracy claimed is ±1%. Whenever 2 or 3 estimates were available for a given star, we averaged them wi ...
The cosmological significance of high
... We have used new and archival infrared and radio observations to search for a dwarf galaxy associated with the high-velocity cloud (HVC) known as Complex H. Complex H is a large (Ω & 400 deg2 ) and probably nearby (d = 27 kpc) HVC whose location in the Galactic plane has hampered previous investigat ...
... We have used new and archival infrared and radio observations to search for a dwarf galaxy associated with the high-velocity cloud (HVC) known as Complex H. Complex H is a large (Ω & 400 deg2 ) and probably nearby (d = 27 kpc) HVC whose location in the Galactic plane has hampered previous investigat ...
Extrasolar Planets: An Amateur`s Search
... those stars actually with planets due to planet forming factors, fp, dictate the fraction of stars with extrasolar planets forming. Np in this case is the total number of extrasolar planets in the galaxy that form or formed per Earth year. Thus, using best estimated values given above, there should ...
... those stars actually with planets due to planet forming factors, fp, dictate the fraction of stars with extrasolar planets forming. Np in this case is the total number of extrasolar planets in the galaxy that form or formed per Earth year. Thus, using best estimated values given above, there should ...
DECODING THE ZODIACAL CONSTELLATIONS-AA
... moon was first sighted on the western horizon just after sunset, either a day or two after the `mathematical’ or `modern’ new moon. Some cultures, ethnic groups and religion retain this visual technique today. Most astrologers and astronomers of today do not apply the visual heliacal technique to ei ...
... moon was first sighted on the western horizon just after sunset, either a day or two after the `mathematical’ or `modern’ new moon. Some cultures, ethnic groups and religion retain this visual technique today. Most astrologers and astronomers of today do not apply the visual heliacal technique to ei ...
Beyond simple depletion: phase behaviour of colloid–star polymer
... Colloids, polymers and surfactants almost always occur in the form of mixtures, whether in nature or as industrial products. One of the main tasks of soft condensed matter physics is to give generic (i.e. chemical-details-independent) insight into the structure, dynamics, phase behaviour and non-equ ...
... Colloids, polymers and surfactants almost always occur in the form of mixtures, whether in nature or as industrial products. One of the main tasks of soft condensed matter physics is to give generic (i.e. chemical-details-independent) insight into the structure, dynamics, phase behaviour and non-equ ...
PowerPoint Presentation - Isolated Neutron Stars, solid crust
... observational resources have been devoted to study the faint thermal emission from neutron stars and to search for features in their spectrum. Isolated neutron stars play a key role in compact objects astrophysics: these are the only sources in which we can see directly the surface of the compact st ...
... observational resources have been devoted to study the faint thermal emission from neutron stars and to search for features in their spectrum. Isolated neutron stars play a key role in compact objects astrophysics: these are the only sources in which we can see directly the surface of the compact st ...
Title: Optical and NEar IR Interferometric or
... isoplanatic angle. The combination of the two techniques therefore provides the possibility of correcting the wave front not only without the limit posed by focus anisoplanatism, but also over a much larger field of view. The extension of the corrected field is crucial for assuring sufficient sky co ...
... isoplanatic angle. The combination of the two techniques therefore provides the possibility of correcting the wave front not only without the limit posed by focus anisoplanatism, but also over a much larger field of view. The extension of the corrected field is crucial for assuring sufficient sky co ...
Nucleosynthesis and Chemical Evolution of Oxygen
... To analyze the yields from massive stars, we consider a single model. While this is only one particular model, its yields are fairly representative of the ejecta from any star more than ten times the mass of the Sun. Chemical evolution models using detailed stellar model yields have long shown that ...
... To analyze the yields from massive stars, we consider a single model. While this is only one particular model, its yields are fairly representative of the ejecta from any star more than ten times the mass of the Sun. Chemical evolution models using detailed stellar model yields have long shown that ...
July - Antelope Valley Astronomy Club
... The Solstice has passed. Welcome to summer folks. We’re on the backside of the year and the days will now start getting shorter. As I’m writing this column, it’s International SUNday and many groups throughout the world are holding outreach activities to share the sun with the public. Rose and I had ...
... The Solstice has passed. Welcome to summer folks. We’re on the backside of the year and the days will now start getting shorter. As I’m writing this column, it’s International SUNday and many groups throughout the world are holding outreach activities to share the sun with the public. Rose and I had ...
Statistical properties of a sample of periodically variable B-type supergiants ⋆
... He I 4471 line. Besides these, we observed one silicon line for each star with the goal to obtain an accurate temperature estimate. Depending on spectral type, this is either the Si II 4130 doublet (late B-type) or the Si III 4560 triplet (early B-type). The spectra were reduced in the standard way, ...
... He I 4471 line. Besides these, we observed one silicon line for each star with the goal to obtain an accurate temperature estimate. Depending on spectral type, this is either the Si II 4130 doublet (late B-type) or the Si III 4560 triplet (early B-type). The spectra were reduced in the standard way, ...
Extrasolar Cosmochemistry
... loss is relatively slow in the sense that it takes much longer than an asteroid’s orbital period. As a consequence, the asteroid’s angular momentum is approximately conserved, and it migrates outward but is still gravitationally bound (Duncan & Lissauer 1998). If initially further than 2.5 AU (AU = ...
... loss is relatively slow in the sense that it takes much longer than an asteroid’s orbital period. As a consequence, the asteroid’s angular momentum is approximately conserved, and it migrates outward but is still gravitationally bound (Duncan & Lissauer 1998). If initially further than 2.5 AU (AU = ...
pvb-based star compositions
... burns fiercely, with a tendency to jet. The orange star is adjusted to my taste in colour; if you prefer a different shade, you might want to alter the relative proportions of calcium carbonate and cryolite. The compositions listed in Table 2 are reasonable, but not particularly exceptional. The blu ...
... burns fiercely, with a tendency to jet. The orange star is adjusted to my taste in colour; if you prefer a different shade, you might want to alter the relative proportions of calcium carbonate and cryolite. The compositions listed in Table 2 are reasonable, but not particularly exceptional. The blu ...
No Slide Title
... • Eventually, core temperatures are high enough to begin fusion of Helium nuclei into Carbon. (T=100 million K) ...
... • Eventually, core temperatures are high enough to begin fusion of Helium nuclei into Carbon. (T=100 million K) ...
Sec 30.1 - Highland High School
... Section 30.1: The Milky Way Galaxy Section 30.2: Other Galaxies in the Universe Section 30.3: Cosmology ...
... Section 30.1: The Milky Way Galaxy Section 30.2: Other Galaxies in the Universe Section 30.3: Cosmology ...
FIRST STELLAR ABUNDANCES IN THE DWARF IRREGULAR
... a galaxy is via the elemental abundances and abundance ratios of their stellar and gas content which contain a record of the star formation histories (SFH) of the galaxy over the last 15 Gyr. The analysis of bright nebular emission lines of H II regions has been the most frequent approach to modelin ...
... a galaxy is via the elemental abundances and abundance ratios of their stellar and gas content which contain a record of the star formation histories (SFH) of the galaxy over the last 15 Gyr. The analysis of bright nebular emission lines of H II regions has been the most frequent approach to modelin ...
Review Game
... share it with others. You will be given credit for your improvements. If your improvements include media such as: clip art, pictures, sounds, etc be sure that you obtain permission to use and distribute those before sending it to me. Send improvements to: ...
... share it with others. You will be given credit for your improvements. If your improvements include media such as: clip art, pictures, sounds, etc be sure that you obtain permission to use and distribute those before sending it to me. Send improvements to: ...
Finding habitable earths around white dwarfs with a robotic
... we would like to find out how rare or common our Earth is, and we would like to know whether life exists in other solar systems. In designing this search, astronomers have primarily focused their efforts on nuclear burning main sequence stars as these have a steady, long-lived source of energy to ma ...
... we would like to find out how rare or common our Earth is, and we would like to know whether life exists in other solar systems. In designing this search, astronomers have primarily focused their efforts on nuclear burning main sequence stars as these have a steady, long-lived source of energy to ma ...
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.