WILLIAM HERSCHEL AND THE `GARNET` STARS: μ CEPHEI AND
... Abstract: Although William Herschel‘s ‗Garnet Star‘ (µ Cephei) is a prominent object, the story of the discovery of this famous red star is not well documented. Prior to and after Herschel, the identification of this star was the subject of confusion in various catalogues and atlases. The case is co ...
... Abstract: Although William Herschel‘s ‗Garnet Star‘ (µ Cephei) is a prominent object, the story of the discovery of this famous red star is not well documented. Prior to and after Herschel, the identification of this star was the subject of confusion in various catalogues and atlases. The case is co ...
Power Point Presentation
... powerful to strike Earth from beyond the solar system ever detected - had a significant effect on Earth's upper atmosphere, report Stanford researchers. It is the first time that a significant change in Earth's environment has been traced to energy from a distant star. (from the NASA press release) ...
... powerful to strike Earth from beyond the solar system ever detected - had a significant effect on Earth's upper atmosphere, report Stanford researchers. It is the first time that a significant change in Earth's environment has been traced to energy from a distant star. (from the NASA press release) ...
KAON 739 - Caltech Optical Observatories
... 4.3. Determine static wavefronts for best science image To date, the author has assumed that phase diversity methods (in and out of focus images on the science camera) can be extended to tighter wavefront error requirements of NGAO. Reports by other groups on image based wavefront sensing for applic ...
... 4.3. Determine static wavefronts for best science image To date, the author has assumed that phase diversity methods (in and out of focus images on the science camera) can be extended to tighter wavefront error requirements of NGAO. Reports by other groups on image based wavefront sensing for applic ...
LACEwING: A New Moving Group Analysis Code
... common origin, the age, metallicity, and formation environment deduced from the high-mass members can be applied to very low-mass objects. The methods for identifying young stars vary with their mass and age. They include measurements of coronal activity, as seen in X-rays (Schmitt et al. 1995; Mice ...
... common origin, the age, metallicity, and formation environment deduced from the high-mass members can be applied to very low-mass objects. The methods for identifying young stars vary with their mass and age. They include measurements of coronal activity, as seen in X-rays (Schmitt et al. 1995; Mice ...
High-mass star-forming cloud G0.38+0.04 in the Galactic center dust
... also prevalent throughout the CMZ, and the high abundance required to produce detectable maser emission implies it is formed on icy grain surfaces and subsequently sublimated, so its presence is again an indication of grain destruction or heating. The widespread higher gas-phase abundances of these ...
... also prevalent throughout the CMZ, and the high abundance required to produce detectable maser emission implies it is formed on icy grain surfaces and subsequently sublimated, so its presence is again an indication of grain destruction or heating. The widespread higher gas-phase abundances of these ...
8. Adaptive Optics
... compensated by the WFS by changing the reference slopes. In general the non common path aberrations produced by the dichroic can be eliminated by applying static offset to M6AM measured with an independent method (for example phase diversity). This process has to be implemented for each science wave ...
... compensated by the WFS by changing the reference slopes. In general the non common path aberrations produced by the dichroic can be eliminated by applying static offset to M6AM measured with an independent method (for example phase diversity). This process has to be implemented for each science wave ...
Type II SuperNova - University of Dayton
... 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 of the star's core. The burst of neutrinos preceded the ...
... 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 of the star's core. The burst of neutrinos preceded the ...
9 adaptive optics - Giant Magellan Telescope
... GMT’s large aperture gives inherently better sky access; thus adaptive correction will be a powerful tool for the general observer. The first major step toward increasing sky coverage is now being taken with the development of laser guide stars on 8-m class telescopes. Light from a sodium resonance ...
... GMT’s large aperture gives inherently better sky access; thus adaptive correction will be a powerful tool for the general observer. The first major step toward increasing sky coverage is now being taken with the development of laser guide stars on 8-m class telescopes. Light from a sodium resonance ...
HUYGENS` DIOPTRICA
... human eye was adjusted, and that visual perception is the chief thing after all. He was perfectly aware that the magnifying power of the instrument depended on the idiosyncrasies of the eye of the individual. Apparently far more accurately than Des Cartes or any of his own contemporaries, Huygens wa ...
... human eye was adjusted, and that visual perception is the chief thing after all. He was perfectly aware that the magnifying power of the instrument depended on the idiosyncrasies of the eye of the individual. Apparently far more accurately than Des Cartes or any of his own contemporaries, Huygens wa ...
Observational evidence for AGN feedback in early
... A major amendment in recent models of hierarchical galaxy formation is the inclusion of socalled active galactic nucleus (AGN) feedback. The energy input from an active central massive black hole is invoked to suppress star formation in early-type galaxies at later epochs. A major problem is that th ...
... A major amendment in recent models of hierarchical galaxy formation is the inclusion of socalled active galactic nucleus (AGN) feedback. The energy input from an active central massive black hole is invoked to suppress star formation in early-type galaxies at later epochs. A major problem is that th ...
Nikon Action Extremes 8x40, 10x50 and 12x50
... For detailed viewing, only the central 50%, possibly to 60% in the Orion, is effective. For wide angled finding, you could use the field out to 70%. The net effective field out to 70% provides a 4.25° usable field of view in both models of 10x50. Beyond that, everything is distorted. None of these t ...
... For detailed viewing, only the central 50%, possibly to 60% in the Orion, is effective. For wide angled finding, you could use the field out to 70%. The net effective field out to 70% provides a 4.25° usable field of view in both models of 10x50. Beyond that, everything is distorted. None of these t ...
Isaac NEWTON: Philosophiae Naturalis Principia Mathematica. 3 Ed
... Also the nearness of comets is confirmed by the light of the heads. For the light of a heavenly body illuminated by the sun, & going off into distant regions, is diminished in splendour in the square of the distance : clearly in the square ratio on account of the increase of distance from the sun, & ...
... Also the nearness of comets is confirmed by the light of the heads. For the light of a heavenly body illuminated by the sun, & going off into distant regions, is diminished in splendour in the square of the distance : clearly in the square ratio on account of the increase of distance from the sun, & ...
Formation of Molecular Clouds and Global Conditions for Star
... scales. Early studies of whole galaxies found a power-law correlation between total gas content (H I plus H2 ) and star formation rate (SFR) with an index N ∼ 1.5 (Kennicutt 1989, 1998). These studies include galaxies that span a very large range of properties, from dwarfs to ultraluminous IR galaxi ...
... scales. Early studies of whole galaxies found a power-law correlation between total gas content (H I plus H2 ) and star formation rate (SFR) with an index N ∼ 1.5 (Kennicutt 1989, 1998). These studies include galaxies that span a very large range of properties, from dwarfs to ultraluminous IR galaxi ...
8 Comets: Potential Sources of Prebiotic Molecules for the
... The classical or outer Oort cloud (Oort, 1950) is a spherical reservoir situated between ∼ 20 000 and 100 000 AU; the inner radius is loosely defined (see below), whereas the outer radius corresponds to half the distance to the nearest stars, beyond which an object can no longer be considered gravita ...
... The classical or outer Oort cloud (Oort, 1950) is a spherical reservoir situated between ∼ 20 000 and 100 000 AU; the inner radius is loosely defined (see below), whereas the outer radius corresponds to half the distance to the nearest stars, beyond which an object can no longer be considered gravita ...
Chapter 10 Formation and evolution of the Local Group
... Summary: The Local Group (LG) is the group of galaxies gravitationally associated with the Galaxy and M 31. Galaxies within the LG have overcome the general expansion of the universe. There are approximately 75 galaxies in the LG within a diameter of ∼3 Mpc having a total mass of 2-5 × 1012 M⊙ . A s ...
... Summary: The Local Group (LG) is the group of galaxies gravitationally associated with the Galaxy and M 31. Galaxies within the LG have overcome the general expansion of the universe. There are approximately 75 galaxies in the LG within a diameter of ∼3 Mpc having a total mass of 2-5 × 1012 M⊙ . A s ...
Planet X, Comets and Earth Changes
... the inside” and still remain active to talk about it on the “outside”. In the mid-1990s Mr. McCanney’s work was recognized by a group of high-level Russian scientists who had measured but did not understand electro-dynamic effects around Earth and in the solar system. They translated all of his pape ...
... the inside” and still remain active to talk about it on the “outside”. In the mid-1990s Mr. McCanney’s work was recognized by a group of high-level Russian scientists who had measured but did not understand electro-dynamic effects around Earth and in the solar system. They translated all of his pape ...
DIO 15 - DIO, The International Journal of Scientific History
... surveys, although few people actually used it for that purpose. I recovered lost asteroids and comets, and found new ones. In 1974 I discovered the 13th satellite of Jupiter, (Leda), and another one the following year. Encouraged by these successes, I started a full-scale survey of the ecliptic regi ...
... surveys, although few people actually used it for that purpose. I recovered lost asteroids and comets, and found new ones. In 1974 I discovered the 13th satellite of Jupiter, (Leda), and another one the following year. Encouraged by these successes, I started a full-scale survey of the ecliptic regi ...
Annual Report 2011 - Max Planck Institute for Astrophysics
... development of a distributed processing system to be used as the backbone both for simulation of the mission and later for the data analysis itself. The mission simulation package was mainly developed at MPA and is still maintained here. MPA directly supports the operation of the Trieste data centre ...
... development of a distributed processing system to be used as the backbone both for simulation of the mission and later for the data analysis itself. The mission simulation package was mainly developed at MPA and is still maintained here. MPA directly supports the operation of the Trieste data centre ...
DIO vol. 15 - DIO, The International Journal of Scientific History
... astronomers do really, really like to hear told. A few of the Neptunediscovery letters are already up at www.dioi.org/kn/neptune/corr.htm and previous articles in DIO 2.3 and 9.1 cover the story. But soon a much richer collection of documents will appear at www.dioi.org. Summaries of around 440 lett ...
... astronomers do really, really like to hear told. A few of the Neptunediscovery letters are already up at www.dioi.org/kn/neptune/corr.htm and previous articles in DIO 2.3 and 9.1 cover the story. But soon a much richer collection of documents will appear at www.dioi.org. Summaries of around 440 lett ...
Evolution of galaxy morphology - Lecture 1 - NCRA-TIFR
... gravitationally bound agglomerations of stars, dust, gas, dark matter. Mass ratio Gas:Stars:Dark Matter - 1:10:100 they are the basic building blocks of the Universe on large scales they show a broad range in their physical properties Understanding of galaxy formation and evolution is one of the mai ...
... gravitationally bound agglomerations of stars, dust, gas, dark matter. Mass ratio Gas:Stars:Dark Matter - 1:10:100 they are the basic building blocks of the Universe on large scales they show a broad range in their physical properties Understanding of galaxy formation and evolution is one of the mai ...
Observational Studies of Interacting Galaxies and the Development
... we worked on together. I have learned a lot from you, including how to conduct observations, reduce data and write papers, etc. Suresh, I owe you a big thank for helping me in instrument developments. I have learned basic optics, experimental techniques and trouble shooting from you. I really enjoye ...
... we worked on together. I have learned a lot from you, including how to conduct observations, reduce data and write papers, etc. Suresh, I owe you a big thank for helping me in instrument developments. I have learned basic optics, experimental techniques and trouble shooting from you. I really enjoye ...
Probing nuclear activity versus star formation at z ∼ 0.8 using near
... The star formation activity in the hosts of AGN at z ∼ 1 has been studied by several authors using mid-infrared (MIR), far-infrared (FIR) and submillimetre data (Alonso-Herrero et al. 2008; Bundy et al. 2008; Brusa et al. 2009; Lutz et al. 2010; Santini et al. 2012). The latter authors found that th ...
... The star formation activity in the hosts of AGN at z ∼ 1 has been studied by several authors using mid-infrared (MIR), far-infrared (FIR) and submillimetre data (Alonso-Herrero et al. 2008; Bundy et al. 2008; Brusa et al. 2009; Lutz et al. 2010; Santini et al. 2012). The latter authors found that th ...
Full Dissertation - Harvard-Smithsonian Center for Astrophysics
... support. The institutions listed in Appendix 1 and the grants provided the financial assistance that made this research possible. Our remote collaborators, Giovanni Fazio, Kandi Shivanandan, and Lynne Deutsch also had a major role in the results reported here, and I thank them for their contribution ...
... support. The institutions listed in Appendix 1 and the grants provided the financial assistance that made this research possible. Our remote collaborators, Giovanni Fazio, Kandi Shivanandan, and Lynne Deutsch also had a major role in the results reported here, and I thank them for their contribution ...
New Horizons Mission Design - SwRI Boulder
... The principal goal of the PKB mission is to perform high-quality scientific investigations of the Pluto-Kuiper Belt region of the solar system according to the NASA AO (NASA, 2001). Pluto was discovered by Clyde Tombaugh in 1930 and is currently located more than 31 Astronomical Units (AU) from the ...
... The principal goal of the PKB mission is to perform high-quality scientific investigations of the Pluto-Kuiper Belt region of the solar system according to the NASA AO (NASA, 2001). Pluto was discovered by Clyde Tombaugh in 1930 and is currently located more than 31 Astronomical Units (AU) from the ...
The Project Gutenberg eBook #32000: An
... was written, the details of the attempt to accomplish them have undergone many, and in some cases important, modifications. For example, the work on reference points and lines has been deferred to Chapter iv. If one is to know the sky, and not simply know about it, a knowledge of the coördinate syst ...
... was written, the details of the attempt to accomplish them have undergone many, and in some cases important, modifications. For example, the work on reference points and lines has been deferred to Chapter iv. If one is to know the sky, and not simply know about it, a knowledge of the coördinate syst ...
International Ultraviolet Explorer
The International Ultraviolet Explorer (IUE) was an astronomical observatory satellite primarily designed to take ultraviolet spectra. The satellite was a collaborative project between NASA, the UK Science Research Council and the European Space Agency (ESA). The mission was first proposed in early 1964, by a group of scientists in the United Kingdom, and was launched on January 26, 1978 aboard a NASA Delta rocket. The mission lifetime was initially set for 3 years, but in the end it lasted almost 18 years, with the satellite being shut down in 1996. The switch-off occurred for financial reasons, while the telescope was still functioning at near original efficiency.It was the first space observatory to be operated in real time by astronomers who visited the groundstations in the United States and Europe. Astronomers made over 104,000 observations using the IUE, of objects ranging from solar system bodies to distant quasars. Among the significant scientific results from IUE data were the first large scale studies of stellar winds, accurate measurements of the way interstellar dust absorbs light, and measurements of the supernova SN1987A which showed that it defied stellar evolution theories as they then stood. When the mission ended, it was considered the most successful astronomical satellite ever.