Ages of Young Stars
... (l) Cargile and James (2010), (m) Naylor et al. (2009), (n) derived by E. Mamajek using data from Hauck and Mermilliod (1998) and isochrones from Bertelli et al. (2009), (o) Ventura et al. (1998). ally negligible) and, presented separately, the systematic absolute age uncertainty estimated by Burke ...
... (l) Cargile and James (2010), (m) Naylor et al. (2009), (n) derived by E. Mamajek using data from Hauck and Mermilliod (1998) and isochrones from Bertelli et al. (2009), (o) Ventura et al. (1998). ally negligible) and, presented separately, the systematic absolute age uncertainty estimated by Burke ...
Ages of young stars
... are combinations of theoretical uncertainties and observational uncertainties associated with estimating the luminosity of the LDB. Contributing to the latter are distance estimates, reddening and bolometric corrections (for stellar luminosity not in the band observed), but these are usually small c ...
... are combinations of theoretical uncertainties and observational uncertainties associated with estimating the luminosity of the LDB. Contributing to the latter are distance estimates, reddening and bolometric corrections (for stellar luminosity not in the band observed), but these are usually small c ...
sections 19-22 instructor notes
... The maximum and/or minimum observed radial velocities of hydrogen clouds along such lines of sight in the 1st and 4th quadrants, respectively, must originate from gas located at the tangent points, if there is any. In general terms there will always be some hydrogen gas at the tangent points, but t ...
... The maximum and/or minimum observed radial velocities of hydrogen clouds along such lines of sight in the 1st and 4th quadrants, respectively, must originate from gas located at the tangent points, if there is any. In general terms there will always be some hydrogen gas at the tangent points, but t ...
sections 19-22 instructor notes
... The maximum and/or minimum observed radial velocities of hydrogen clouds along such lines of sight in the 1st and 4th quadrants, respectively, must originate from gas located at the tangent points, if there is any. In general terms there will always be some hydrogen gas at the tangent points, but t ...
... The maximum and/or minimum observed radial velocities of hydrogen clouds along such lines of sight in the 1st and 4th quadrants, respectively, must originate from gas located at the tangent points, if there is any. In general terms there will always be some hydrogen gas at the tangent points, but t ...
Edwin Hubble (1889
... telescopes. Yet, he wrote, "Extremely little is known of the nature of nebulae, and no significant classification has yet been suggested; not even a precise definition has been formulated." The way Hubble discovered to classify nebulae is described here. After serving in World War I, Hubble joined t ...
... telescopes. Yet, he wrote, "Extremely little is known of the nature of nebulae, and no significant classification has yet been suggested; not even a precise definition has been formulated." The way Hubble discovered to classify nebulae is described here. After serving in World War I, Hubble joined t ...
“XRbinary”: A Program to Calculate the Orbital Light Curves of X
... where, once again, the normalization constant K is set to give the desired total disk luminosity through equation 27. The main disk may also have localized spots that are hotter or colder than the temperature given by equation 26. The properties of each spot are specified by its boundaries in ζ and ...
... where, once again, the normalization constant K is set to give the desired total disk luminosity through equation 27. The main disk may also have localized spots that are hotter or colder than the temperature given by equation 26. The properties of each spot are specified by its boundaries in ζ and ...
Project Description - SDSS-III
... expansion of the Universe. Large-scale imaging and spectroscopic surveys have revealed rich, complex structure in the outer Milky Way, residual traces of the Galaxy’s hierarchical formation history. These surveys have discovered more than a dozen new members of the Local Group of galaxies and identi ...
... expansion of the Universe. Large-scale imaging and spectroscopic surveys have revealed rich, complex structure in the outer Milky Way, residual traces of the Galaxy’s hierarchical formation history. These surveys have discovered more than a dozen new members of the Local Group of galaxies and identi ...
Regular Expressions into Finite Automata
... E, F or G will be used to mark regular expression. L(E) denotes the language specified by the regular expression E. ME usually denotes the Glushkov automaton for E, unless mentioned otherwise. The size of a regular expression E is defined as the number of symbols it contain, including the syntactic ...
... E, F or G will be used to mark regular expression. L(E) denotes the language specified by the regular expression E. ME usually denotes the Glushkov automaton for E, unless mentioned otherwise. The size of a regular expression E is defined as the number of symbols it contain, including the syntactic ...
365 days of SKYWATCHING
... study - the Moon. Its rugged craters, high mountains and vast seas offer some of the finest details to be found in any astronomical target. It changes every night as the terminator - the line between sunset and shadow - progresses over the surface, revealing new details. Unlike a star chart, Moon fea ...
... study - the Moon. Its rugged craters, high mountains and vast seas offer some of the finest details to be found in any astronomical target. It changes every night as the terminator - the line between sunset and shadow - progresses over the surface, revealing new details. Unlike a star chart, Moon fea ...
Planet formation around stars of various masses: The snow line and
... suggests that planet formation is a common and robust process. Planet masses inferred from debris disks range from terrestrial to Jovian, at distances as great as tens of AU from the central star (e.g. Kenyon & Bromley 2004a; Greaves et al. 2005). The nature and sensitivity of radial velocity survey ...
... suggests that planet formation is a common and robust process. Planet masses inferred from debris disks range from terrestrial to Jovian, at distances as great as tens of AU from the central star (e.g. Kenyon & Bromley 2004a; Greaves et al. 2005). The nature and sensitivity of radial velocity survey ...
CPW
... repel, not a^ract each other. If you did not know that like charges repel, you sAll could have go^en B over A, since if it were true that like charges a^racted each other, high pressure wo ...
... repel, not a^ract each other. If you did not know that like charges repel, you sAll could have go^en B over A, since if it were true that like charges a^racted each other, high pressure wo ...
Sample pages 1 PDF
... the end of the 1970s, which replaced photographic plates as optical detectors, the sensitivity, accuracy, and data rate of optical observations have increased enormously. At the end of the 1980s, a camera with 1000 1000 pixels (picture elements) was considered a wide-field instrument. In 2003 a ca ...
... the end of the 1970s, which replaced photographic plates as optical detectors, the sensitivity, accuracy, and data rate of optical observations have increased enormously. At the end of the 1980s, a camera with 1000 1000 pixels (picture elements) was considered a wide-field instrument. In 2003 a ca ...
The Ages of Stars
... stars. We can estimate rough ages for those stars, but a better understanding of, for instance, the dynamics of such systems and the inward migration of planets requires accurate ages. • We could better understand the behavior and future of our Sun if we could create a true cohort based on mass, com ...
... stars. We can estimate rough ages for those stars, but a better understanding of, for instance, the dynamics of such systems and the inward migration of planets requires accurate ages. • We could better understand the behavior and future of our Sun if we could create a true cohort based on mass, com ...
A Spitzer mid-infrared spectral survey of mass
... Bessell & Fox 1983; Feast et al. 1989), and the intermediate-age clusters NGC 419 and 1978, both of which have a known mid-IR source. Targets were selected to span the long sequence of increasing mass-loss in LIMS which stretches from (J − K , M K ) ∼ (2, − 9) to (7, −4) in Fig. 1(a). [The bright ox ...
... Bessell & Fox 1983; Feast et al. 1989), and the intermediate-age clusters NGC 419 and 1978, both of which have a known mid-IR source. Targets were selected to span the long sequence of increasing mass-loss in LIMS which stretches from (J − K , M K ) ∼ (2, − 9) to (7, −4) in Fig. 1(a). [The bright ox ...
The Evolution of Isotope Ratios in the Milky Way Galaxy
... Isotope ratios have opened a new window into the study of the details of stellar evolution, supernovae, and galactic chemical evolution. We present the evolution of the isotope ratios of elemental abundances (from C to Zn) in the solar neighbourhood, bulge, halo, and thick disk, using chemical evolu ...
... Isotope ratios have opened a new window into the study of the details of stellar evolution, supernovae, and galactic chemical evolution. We present the evolution of the isotope ratios of elemental abundances (from C to Zn) in the solar neighbourhood, bulge, halo, and thick disk, using chemical evolu ...
Spring 2015 Mercury - Astronomical Society of the Pacific
... Count Dirk III become embroiled in a financial dispute with the Emperor, who sent an army to subdue him. In a remarkable reversal of fortune, a much smaller force under Count Dirk soundly defeated the imperial army of about 1,000 men. The imperial commander was captured and many of his troops were s ...
... Count Dirk III become embroiled in a financial dispute with the Emperor, who sent an army to subdue him. In a remarkable reversal of fortune, a much smaller force under Count Dirk soundly defeated the imperial army of about 1,000 men. The imperial commander was captured and many of his troops were s ...
Type II SuperNova - University of Dayton
... the Large Magellanic Cloud. This was the first "nearby" supernova in the last 3 centuries, and for the first time astronomers not only observed the light show, but also detected 19 of the elusive neutrinos (the detectors observed electron anti-neutrinos, to be more precise) produced by the collapse ...
... the Large Magellanic Cloud. This was the first "nearby" supernova in the last 3 centuries, and for the first time astronomers not only observed the light show, but also detected 19 of the elusive neutrinos (the detectors observed electron anti-neutrinos, to be more precise) produced by the collapse ...
Meteor Shower Observations
... observed with meteors radiating away from the constellation Leo in mid November. By 1837, astronomers had also observed that there was a meteor shower in mid August with a radiant in the constellation Perseus. Over the years, astronomers have observed numerous meteor showers. To designate which mete ...
... observed with meteors radiating away from the constellation Leo in mid November. By 1837, astronomers had also observed that there was a meteor shower in mid August with a radiant in the constellation Perseus. Over the years, astronomers have observed numerous meteor showers. To designate which mete ...
Corvus (constellation)
Corvus is a small constellation in the Southern Celestial Hemisphere. Its name comes from the Latin word ""raven"" or ""crow"". It includes only 11 stars with brighter than 4.02 magnitudes. One of the 48 constellations listed by the 2nd-century astronomer Ptolemy, it remains one of the 88 modern constellations. The four brightest stars, Gamma, Delta, Epsilon, and Beta Corvi from a distinctive quadrilateral in the night sky. The young star Eta Corvi has been found to have two debris disks.