Pulsed Accretion in the Young Binary &
... Most close binary T Tauri stars are surrounded by circumbinary disks similar to the protoplanetary disks seen around young single stars. In the case of binaries, however, theory predicts that the time-varying gravitational perturbations of the disk from an eccentric binary should cause the accretion ...
... Most close binary T Tauri stars are surrounded by circumbinary disks similar to the protoplanetary disks seen around young single stars. In the case of binaries, however, theory predicts that the time-varying gravitational perturbations of the disk from an eccentric binary should cause the accretion ...
Design, fabrication, and open-loop control of micro deformable mirrors for Contents
... AO and MEMS DMs: relevance to astronomy and space science Adaptive optics on large ground-based telescopes has resulted in a surge of new astronomical discoveries over the past few years, some examples of which are illustrated in Figure 3. Using AO, scientists around the world have produced what Sci ...
... AO and MEMS DMs: relevance to astronomy and space science Adaptive optics on large ground-based telescopes has resulted in a surge of new astronomical discoveries over the past few years, some examples of which are illustrated in Figure 3. Using AO, scientists around the world have produced what Sci ...
Seminar Outburst of Comet 17P/Holmes
... (Tenerife, Canary Islands) found comet [9] as a stellar 8.4 magnitude object. Outburst was ...
... (Tenerife, Canary Islands) found comet [9] as a stellar 8.4 magnitude object. Outburst was ...
Lab 14 Galaxy Morphology
... a telescope was used to look at them. While many of these nebulae are clouds of glowing hydrogen gas within the Milky Way galaxy (HII regions), others (some of which resembled pinwheels) were true galaxies–similar to the Milky Way in size and structure, but millions of light years from us. It was no ...
... a telescope was used to look at them. While many of these nebulae are clouds of glowing hydrogen gas within the Milky Way galaxy (HII regions), others (some of which resembled pinwheels) were true galaxies–similar to the Milky Way in size and structure, but millions of light years from us. It was no ...
Editable Schemes of Work - Approach 1
... Practical support to help you deliver this Edexcel specification Scheme of work This scheme of work has been produced to help you implement this Edexcel specification. It is offered as an example of one possible model that you should feel free to adapt to meet your needs and is not intended to be i ...
... Practical support to help you deliver this Edexcel specification Scheme of work This scheme of work has been produced to help you implement this Edexcel specification. It is offered as an example of one possible model that you should feel free to adapt to meet your needs and is not intended to be i ...
A Budget and Accounting of Metals at z~ 0: Results from the COS
... of oxygen in their ISM. COS-Halos has specifically addressed the metal content of diffuse halo gas. The current study aims to place these findings on highly ionized oxygen into the larger context of metal masses contained within all galactic and circumgalactic components: stars, dust, and the other ...
... of oxygen in their ISM. COS-Halos has specifically addressed the metal content of diffuse halo gas. The current study aims to place these findings on highly ionized oxygen into the larger context of metal masses contained within all galactic and circumgalactic components: stars, dust, and the other ...
The Processing and Classification for the Spectra of Six Comets
... of asteroids, which have no stable orbits and finally are moved away from the solar system by the giant planets. They behave as like asteroids in half, and as like comets in another half. Hence they are named after “Centaurus”. The orbits of the Centauri asteroids will penetrate or have penetrated th ...
... of asteroids, which have no stable orbits and finally are moved away from the solar system by the giant planets. They behave as like asteroids in half, and as like comets in another half. Hence they are named after “Centaurus”. The orbits of the Centauri asteroids will penetrate or have penetrated th ...
Reassessing the formation of the inner Oort cloud
... We re-examine the formation of the inner Oort comet cloud while the Sun was in its birth cluster with the aid of numerical simulations. This work is a continuation of an earlier study (Brasser et al., 2006) with several substantial modifications. First, the system consisting of stars, planets and co ...
... We re-examine the formation of the inner Oort comet cloud while the Sun was in its birth cluster with the aid of numerical simulations. This work is a continuation of an earlier study (Brasser et al., 2006) with several substantial modifications. First, the system consisting of stars, planets and co ...
LTBN_Script - Let There Be Night
... see. Hypatia: Yes I know. The star patterns are the same as yours, but we just can’t see all of them. In many places we can’t even see the Milky Way. Galileo: What’s the cause for your light pollution? Hypatia: Lights! Lots, and lots of outdoor lights. Galileo: Why do you have all of those lights? H ...
... see. Hypatia: Yes I know. The star patterns are the same as yours, but we just can’t see all of them. In many places we can’t even see the Milky Way. Galileo: What’s the cause for your light pollution? Hypatia: Lights! Lots, and lots of outdoor lights. Galileo: Why do you have all of those lights? H ...
the strange case of claudius ptolemy
... calculate it from the best available theory of the sun. As it happens, the time that this unknown person calculated is in error by about 28 hours. That innocent act has caused untold grief to students of the Athenian calendar, who have assumed that the time given was a genuine observation. The next ...
... calculate it from the best available theory of the sun. As it happens, the time that this unknown person calculated is in error by about 28 hours. That innocent act has caused untold grief to students of the Athenian calendar, who have assumed that the time given was a genuine observation. The next ...
to - NexStar Resource Site
... Although Galileo was the first to observe it with a telescope in 1610, Saturn has been known since prehistoric times. Up to 1977 Saturn was believed to be the only planet with a ring system. It was later discovered that all of the gas planets had ring systems, albeit faint, of their own. Saturn is a ...
... Although Galileo was the first to observe it with a telescope in 1610, Saturn has been known since prehistoric times. Up to 1977 Saturn was believed to be the only planet with a ring system. It was later discovered that all of the gas planets had ring systems, albeit faint, of their own. Saturn is a ...
Proficiency Step #5--
... Any discussion of astronomical objects necessarily must include a definition of the “celestial sphere”. Imagine that a small marble was placed in the exact center of a basketball. If we call the marble “Earth” and the inside of the basketball—as seen from the marble—the celestial sphere, we can ima ...
... Any discussion of astronomical objects necessarily must include a definition of the “celestial sphere”. Imagine that a small marble was placed in the exact center of a basketball. If we call the marble “Earth” and the inside of the basketball—as seen from the marble—the celestial sphere, we can ima ...
The properties of a spectroscopically selected sample of cataclysmic variables Amornrat Aungwerojwit
... and patience, the work presented in this thesis could not have been satisfactory. I am grateful for his enthusiasm, which has inspired me and has picked me up out of the depths of despair numerous times. I am greatly indebted for his introducing me to the world of research and helping me to be invol ...
... and patience, the work presented in this thesis could not have been satisfactory. I am grateful for his enthusiasm, which has inspired me and has picked me up out of the depths of despair numerous times. I am greatly indebted for his introducing me to the world of research and helping me to be invol ...
Modeling, Simulation, and Characterization of Space Debris in low
... increased Local Area Awareness for satellites in low-Earth and geostationary orbit. Local Area Awareness is defined as the ability to detect, characterize, and extract useful information regarding resident space objects as they move through the space environment surrounding a spacecraft. The study o ...
... increased Local Area Awareness for satellites in low-Earth and geostationary orbit. Local Area Awareness is defined as the ability to detect, characterize, and extract useful information regarding resident space objects as they move through the space environment surrounding a spacecraft. The study o ...
solar system
... condition, known as presbyopia, becomes noticeable for most people in their forties, when they can no longer focus on letters held at a comfortable distance from the eye. Magnifying glasses became common in the thirteenth century, but these are cumbersome, especially when one is writing. Craftsmen i ...
... condition, known as presbyopia, becomes noticeable for most people in their forties, when they can no longer focus on letters held at a comfortable distance from the eye. Magnifying glasses became common in the thirteenth century, but these are cumbersome, especially when one is writing. Craftsmen i ...
Final Stages of Stellar Evolution - supernovae and the synthesis of
... Nucleosynthesis Revision of Nucleosynthesis up to Iron Nuclear Synthesis of Heavy Elements ...
... Nucleosynthesis Revision of Nucleosynthesis up to Iron Nuclear Synthesis of Heavy Elements ...
evolution of the foucault-secretan reflecting telescope
... diameters he moved from spherical to paraboloidal mirrors and developed tests to determine the errors of the surfaces he was polishing, of which the knife-edge test is the most informative and sensitive. The errors were then corrected with retouches locales, i.e. local repolishing. He also introduce ...
... diameters he moved from spherical to paraboloidal mirrors and developed tests to determine the errors of the surfaces he was polishing, of which the knife-edge test is the most informative and sensitive. The errors were then corrected with retouches locales, i.e. local repolishing. He also introduce ...
Sample syllabus 2 - Johns Hopkins Center for Talented Youth
... Course Description: When the sun runs out of fuel, will it explode in a giant supernova or fade out into a white dwarf? Does every galaxy revolve around a super-massive black hole? Will the universe continue to expand, or will it eventually collapse back upon itself in a reversal of the Big Bang? As ...
... Course Description: When the sun runs out of fuel, will it explode in a giant supernova or fade out into a white dwarf? Does every galaxy revolve around a super-massive black hole? Will the universe continue to expand, or will it eventually collapse back upon itself in a reversal of the Big Bang? As ...
Reflecting `Popular Culture`: The Introduction, Diffusion, and
... years, only Robert Hooke succeeded in constructing a more or less working example of a reflecting telescope.11 A French design published in 1672 by Cassegrain also remained on the drawing table.12 Time would reveal that only a thorough and lengthy practice in shaping and polishing mirrors would lead ...
... years, only Robert Hooke succeeded in constructing a more or less working example of a reflecting telescope.11 A French design published in 1672 by Cassegrain also remained on the drawing table.12 Time would reveal that only a thorough and lengthy practice in shaping and polishing mirrors would lead ...
Rest-frame Optical Spectra: A Window into Galaxy Formation at z~2
... • We typically target a small number of Xray and/or IR-selected AGNs on each mask. • Use MOSFIRE spectra to identify additional AGNs. • We will study AGN demographics, distributions of BH accretion rates, methods of AGN detection. • With early sample of AGNs (red X-ray, burgunday IR), we are sta ...
... • We typically target a small number of Xray and/or IR-selected AGNs on each mask. • Use MOSFIRE spectra to identify additional AGNs. • We will study AGN demographics, distributions of BH accretion rates, methods of AGN detection. • With early sample of AGNs (red X-ray, burgunday IR), we are sta ...
The Day We Found the Universe
... kind at high elevation—back in working order and demonstrated its power with singular panache. Even though ...
... kind at high elevation—back in working order and demonstrated its power with singular panache. Even though ...
Chemical Evolution of Galactic Systems
... support, generosity and good advice. It was through Brad’s initiative and encouragement that I was lucky enough to become involved in many rewarding intercollegiate, interstate and international collaborations during my PhD. His appreciation of the importance of communication and collaboration is a ...
... support, generosity and good advice. It was through Brad’s initiative and encouragement that I was lucky enough to become involved in many rewarding intercollegiate, interstate and international collaborations during my PhD. His appreciation of the importance of communication and collaboration is a ...
MANU-CHAO: A Ground-Layer Adaptive Optics Experiment for the
... 20 km 1st step: have a look at the atmospheric turbulence above Mt. Graham: • SCIDAR measurements for 16 nights (more observations this week) – measure the strength of the turbulence as a function of the altitude above the mountain (CN2 profile) ...
... 20 km 1st step: have a look at the atmospheric turbulence above Mt. Graham: • SCIDAR measurements for 16 nights (more observations this week) – measure the strength of the turbulence as a function of the altitude above the mountain (CN2 profile) ...
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.