Article PDF - IOPscience
... reaching 5s single-epoch depths of about 22.0, 22.0, 21.9, 21.0, and 19.8 mag in gP1, rP1, iP1, zP1, and yP1 bands, respectively. The uncertainty in photometric calibration of the survey is 0.01 mag (Schlafly et al. 2012), and the astrometric precision of single-epoch detections is 10 mas (Magnier e ...
... reaching 5s single-epoch depths of about 22.0, 22.0, 21.9, 21.0, and 19.8 mag in gP1, rP1, iP1, zP1, and yP1 bands, respectively. The uncertainty in photometric calibration of the survey is 0.01 mag (Schlafly et al. 2012), and the astrometric precision of single-epoch detections is 10 mas (Magnier e ...
WILLIAM HERSCHEL AND THE `GARNET` STARS: μ CEPHEI AND
... Its right ascension in time is about 2′ 19″ th preceding Flamsteed‘s 10 Cephei, and it is about 2° 20′ 3″ more south than the same star. It is of a very fine deep garnet colour such as the periodical star o Ceti [Mira] was formerly, and a most beautiful object, especially if we look for some time at ...
... Its right ascension in time is about 2′ 19″ th preceding Flamsteed‘s 10 Cephei, and it is about 2° 20′ 3″ more south than the same star. It is of a very fine deep garnet colour such as the periodical star o Ceti [Mira] was formerly, and a most beautiful object, especially if we look for some time at ...
Lichtenknecker- Database of the BAV
... series of photographic pictures or visual observations. In addition reports about weak images on photographic plates are included, although these are no minimum in the proper meaning. The criteria for an inclusion of eclipsing binaries into the database are a magnitude not fainter than 13mag during ...
... series of photographic pictures or visual observations. In addition reports about weak images on photographic plates are included, although these are no minimum in the proper meaning. The criteria for an inclusion of eclipsing binaries into the database are a magnitude not fainter than 13mag during ...
abstracts book - Instituto de Astrofísica e Ciências do Espaço
... across the HR diagram with a level of detail that was in no way foreseen in 1985. In spite of the great science successes, astero- and helioseismic data still contain many secrets waiting to be uncovered. The opportunity to use the existing data and tools to clarify major questions of stellar physic ...
... across the HR diagram with a level of detail that was in no way foreseen in 1985. In spite of the great science successes, astero- and helioseismic data still contain many secrets waiting to be uncovered. The opportunity to use the existing data and tools to clarify major questions of stellar physic ...
The spectroscopic Hertzsprung
... The Hertzsprung-Russell (HR) diagram has been an important diagram for the understanding of stellar evolution for more than a hundred years (Nielsen 1964). Hertzsprung (1905) and later independently Russell (1919) realized that the knowledge of the absolute brightness of stars together with their sp ...
... The Hertzsprung-Russell (HR) diagram has been an important diagram for the understanding of stellar evolution for more than a hundred years (Nielsen 1964). Hertzsprung (1905) and later independently Russell (1919) realized that the knowledge of the absolute brightness of stars together with their sp ...
LACEwING: A New Moving Group Analysis Code
... For each NYMG, we use 100,000 Monte Carlo iterations within the triaxial ellipsoids to generate a realistic spread of UVW velocities. Using inverted matrices from Johnson & Soderblom (1987), we convert the UVW velocities into μα, μδ, and γ for a simulated star at the α and δ of the target, at a stan ...
... For each NYMG, we use 100,000 Monte Carlo iterations within the triaxial ellipsoids to generate a realistic spread of UVW velocities. Using inverted matrices from Johnson & Soderblom (1987), we convert the UVW velocities into μα, μδ, and γ for a simulated star at the α and δ of the target, at a stan ...
Evolution of low mass stars
... review the historic progress in understanding stars (Chap. 1.1), summarize modern efforts on numerical stellar evolution, including basic calculations and stellar codes currently being adopted (Chap. 1.2), and then introduce how my Ph.D work goes a bit further in these fields (Chap. 1.3 and 1.4). ...
... review the historic progress in understanding stars (Chap. 1.1), summarize modern efforts on numerical stellar evolution, including basic calculations and stellar codes currently being adopted (Chap. 1.2), and then introduce how my Ph.D work goes a bit further in these fields (Chap. 1.3 and 1.4). ...
X-Ray Properties of Young Stars and Stellar Clusters
... explosive magnetic reconnection. The reconnection immediately accelerates a population of particles with energies tens of keV to several MeV; this is the “impulsive phase” manifested by gyrosynchrotron radio continuum emission, blue optical/UV continuum, and, in the Sun, high γ-ray and energetic par ...
... explosive magnetic reconnection. The reconnection immediately accelerates a population of particles with energies tens of keV to several MeV; this is the “impulsive phase” manifested by gyrosynchrotron radio continuum emission, blue optical/UV continuum, and, in the Sun, high γ-ray and energetic par ...
to - NexStar Resource Site
... discovered that all of the gas planets had ring systems, albeit faint, of their own. Saturn is about 9.5 AU from the Sun or over 900,000,000 million miles. Since 1979 it has been visited by the Pioneer and Voyager space craft and will have a visit by the Cassini space craft in 2004. I may be off on ...
... discovered that all of the gas planets had ring systems, albeit faint, of their own. Saturn is about 9.5 AU from the Sun or over 900,000,000 million miles. Since 1979 it has been visited by the Pioneer and Voyager space craft and will have a visit by the Cassini space craft in 2004. I may be off on ...
Deneb - Emmi
... Deneb’s Life Cycle Deneb is a star that uses its fuel quickly. Deneb might last only a few million years because of how it uses its power quickly. Deneb was made with a Nebula and will ...
... Deneb’s Life Cycle Deneb is a star that uses its fuel quickly. Deneb might last only a few million years because of how it uses its power quickly. Deneb was made with a Nebula and will ...
Brightest Stars : Discovering the Universe Through the Sky`s Most
... a measure of what the human race as a whole has found interesting and individual about the star. A key part of each profile, of course, is also what the science of astronomy has taught us about the physical nature of these brightest stars—that is, what they are like as suns. Much of this information ...
... a measure of what the human race as a whole has found interesting and individual about the star. A key part of each profile, of course, is also what the science of astronomy has taught us about the physical nature of these brightest stars—that is, what they are like as suns. Much of this information ...
Ages of young stars
... of our Solar System from meteorites because we can apply radiometric dating techniques to samples in a laboratory. From this we infer the Sun’s age, a very precise one, but even the Sun itself does not directly reveal its age in its visible properties. The techniques for age-dating stars, and thereb ...
... of our Solar System from meteorites because we can apply radiometric dating techniques to samples in a laboratory. From this we infer the Sun’s age, a very precise one, but even the Sun itself does not directly reveal its age in its visible properties. The techniques for age-dating stars, and thereb ...
Ages of Young Stars
... of our Solar System from meteorites because we can apply radiometric dating techniques to samples in a laboratory. From this we infer the Sun’s age, a very precise one, but even the Sun itself does not directly reveal its age in its visible properties. The techniques for age-dating stars, and thereb ...
... of our Solar System from meteorites because we can apply radiometric dating techniques to samples in a laboratory. From this we infer the Sun’s age, a very precise one, but even the Sun itself does not directly reveal its age in its visible properties. The techniques for age-dating stars, and thereb ...
STARLAB
... you told the first time. If time allows, show the Earth Cylinder or other cylinders. Try some activities from your Planetarium Activities for Student Success (PASS) volumes. (Did you send in your Product Registration form? See Note.) 6. It’s important that the students realize that you are learning ...
... you told the first time. If time allows, show the Earth Cylinder or other cylinders. Try some activities from your Planetarium Activities for Student Success (PASS) volumes. (Did you send in your Product Registration form? See Note.) 6. It’s important that the students realize that you are learning ...
PDF - STRW Local - Universiteit Leiden
... While the haloes of dark matter that are thought to host galaxies can be simulated accurately almost from first principles, this is not the case for the galaxies themselves, which consist mostly of baryonic (i.e. ordinary) matter. The difficulties stem from three problems. First, not only gravity, b ...
... While the haloes of dark matter that are thought to host galaxies can be simulated accurately almost from first principles, this is not the case for the galaxies themselves, which consist mostly of baryonic (i.e. ordinary) matter. The difficulties stem from three problems. First, not only gravity, b ...
Astrology: Is Your Destiny in the Stars?
... • The positions of stars relative to the sun "predict" the agricultural seasons. • The positions of stars can be used to tell time at night. • The Babylonians and Egyptians early developed techniques for doing this. ...
... • The positions of stars relative to the sun "predict" the agricultural seasons. • The positions of stars can be used to tell time at night. • The Babylonians and Egyptians early developed techniques for doing this. ...
Astronomers` Observing Guides
... knowledge about double stars – how they are born, evolve and interact, their significance in the cosmic scheme of things, and the valuable insights they provide into such fundamental matters as stellar masses and the ultimate fate of stars. The more we know about these fascinating objects, the more e ...
... knowledge about double stars – how they are born, evolve and interact, their significance in the cosmic scheme of things, and the valuable insights they provide into such fundamental matters as stellar masses and the ultimate fate of stars. The more we know about these fascinating objects, the more e ...
the use of fixed stars in astrology
... the unknown. The Natal Chart before you is the only thing “known” to you. And with a view to reach the “unknown”, an astrologer has to be very familiar with all the tools he needs to use. But for doing this, the absolute necessity is an accurate, casting of the Natal Chart. An accurate, Spashta Bhav ...
... the unknown. The Natal Chart before you is the only thing “known” to you. And with a view to reach the “unknown”, an astrologer has to be very familiar with all the tools he needs to use. But for doing this, the absolute necessity is an accurate, casting of the Natal Chart. An accurate, Spashta Bhav ...
On the elemental abundance and isotopic mixture of mercury in
... In the present paper the optical region mercury lines Hg λ4358, Hg λλ3984, 6149 have been studied, and the wavelength and oscillator strength of the hyperfine and isotopic components for each transition are presented in Table 2 for the case of a terrestrial isotopic mixture (Anders & Grevesse 1 ...
... In the present paper the optical region mercury lines Hg λ4358, Hg λλ3984, 6149 have been studied, and the wavelength and oscillator strength of the hyperfine and isotopic components for each transition are presented in Table 2 for the case of a terrestrial isotopic mixture (Anders & Grevesse 1 ...
The spectroscopic Hertzsprung-Russell diagram
... the understanding of stellar evolution since more than hundred years (Nielsen 1964). Hertzsprung (1905) and later independently Russell (1919) realized that the knowledge of the absolute brightness of stars, or at least of the absolute brightness differences, together with their spectral type or sur ...
... the understanding of stellar evolution since more than hundred years (Nielsen 1964). Hertzsprung (1905) and later independently Russell (1919) realized that the knowledge of the absolute brightness of stars, or at least of the absolute brightness differences, together with their spectral type or sur ...
Astronomy WHS Sow
... System and large objects around other stars, disputes arose over what should constitute a planet. There was particular disagreement over whether an object should be considered a planet if it was part of a distinct population such as a belt, or if it was large enough to generate energy by the thermon ...
... System and large objects around other stars, disputes arose over what should constitute a planet. There was particular disagreement over whether an object should be considered a planet if it was part of a distinct population such as a belt, or if it was large enough to generate energy by the thermon ...
The Ages of Stars
... Elderly individual stars will be discussed, but the roader topic of Population II stars is beyond the scope of this. Similarly, white dwarfs (WDs) are also very useful for age-dating clusters and populations using fundamentally different physics, but they have been well reviewed elsewhere (Koester ( ...
... Elderly individual stars will be discussed, but the roader topic of Population II stars is beyond the scope of this. Similarly, white dwarfs (WDs) are also very useful for age-dating clusters and populations using fundamentally different physics, but they have been well reviewed elsewhere (Koester ( ...
Christian Andreas Doppler e the man and his
... Abstract Aims Reminding the life and legacy of the Austrian scientist who discovered the famous ‘Doppler Effect’. Methods and results C.A. Doppler was born the 29th of November 1803 in Salzburg. After studies in Linz and Vienna, he graduated in mathematics, became assistant at the University and lat ...
... Abstract Aims Reminding the life and legacy of the Austrian scientist who discovered the famous ‘Doppler Effect’. Methods and results C.A. Doppler was born the 29th of November 1803 in Salzburg. After studies in Linz and Vienna, he graduated in mathematics, became assistant at the University and lat ...
Astronomy Edexcel GCSE in Astronomy (2AS01)
... reigniting inevitable questions such as ‘Are we alone in the Universe?’ and the techniques and limitations of searching for life and habitable planets are explored. The How Science Works aspects of GCSE Astronomy are given in italics throughout the topic. Please refer to Appendix 6 for more informat ...
... reigniting inevitable questions such as ‘Are we alone in the Universe?’ and the techniques and limitations of searching for life and habitable planets are explored. The How Science Works aspects of GCSE Astronomy are given in italics throughout the topic. Please refer to Appendix 6 for more informat ...
Constellation
In modern astronomy, a constellation is a specific area of the celestial sphere as defined by the International Astronomical Union (IAU). These areas had their origins in Western-traditional asterisms from which the constellations take their names. There are 88 officially recognized constellations, covering the entire sky.Thus, any given point in a celestial coordinate system can unambiguously be assigned to a constellation. It is usual in astronomy to give the constellation in which a given object is found along with its coordinates in order to convey a rough idea in which part of the sky it is located. For example, saying the Horsehead Nebula is near Orion's Belt in the constellation Orion immediately locates it just south of the ecliptic and conveys that it is best observable in winter from the Northern Hemisphere.