Estimating the Cost of Extremely Large Telescopes
... where: Wi = the weighting factor for the ith science program Ti = the time fraction for the ith science program SMFi = the scientific merit function for the ith science program This concept of a scientific merit function is a departure from the more traditional method of flowing down science require ...
... where: Wi = the weighting factor for the ith science program Ti = the time fraction for the ith science program SMFi = the scientific merit function for the ith science program This concept of a scientific merit function is a departure from the more traditional method of flowing down science require ...
sdss-fnal - Sloan Digital Sky Survey
... create middleware of intelligent query agents, apply to both particle physics and astrophysics data sets Status: 3 year proposal just funded ...
... create middleware of intelligent query agents, apply to both particle physics and astrophysics data sets Status: 3 year proposal just funded ...
SIMsim: An End-to-End Simulation of The Space Interferometer
... The first step of the simulation is to generate a complete 5-year schedule of observations off-line. This has been done by R. Swartz and X. Pan. Positions of date are needed for star targets, both science and guide, and observation times and durations are generated. Spacecraft and baseline pointing ...
... The first step of the simulation is to generate a complete 5-year schedule of observations off-line. This has been done by R. Swartz and X. Pan. Positions of date are needed for star targets, both science and guide, and observation times and durations are generated. Spacecraft and baseline pointing ...
JENAM-2011 Book of abstracts
... ESA’s Hipparcos astrometry mission was a particularly innovative project in space astronomy. The satellite was launched in 1989 (already more than 20 years ago) with the final Hipparcos and Tycho Catalogues fully published just eight years later. Exceeding the original scientific specifications in term ...
... ESA’s Hipparcos astrometry mission was a particularly innovative project in space astronomy. The satellite was launched in 1989 (already more than 20 years ago) with the final Hipparcos and Tycho Catalogues fully published just eight years later. Exceeding the original scientific specifications in term ...
Lecture 8: Spiral Structure
... This model pictures spiral arms not as material arms at all but rather as the result of density waves moving through the Galaxy’s disk. The spiral structure of a galaxy is regarded as a wave pattern resulting from gravitational instabilities. The density wave moves through the stellar and interstell ...
... This model pictures spiral arms not as material arms at all but rather as the result of density waves moving through the Galaxy’s disk. The spiral structure of a galaxy is regarded as a wave pattern resulting from gravitational instabilities. The density wave moves through the stellar and interstell ...
Astronomers` Observing Guides
... Cover illustration: A red dwarf, shown in the background, is at the mercy of its highly magnetic white dwarf companion in this depiction of a so-called intermediate polar binary system. Gas lost from the red star is channelled toward the white dwarf ’s poles along magnetic field lines, where it emits ...
... Cover illustration: A red dwarf, shown in the background, is at the mercy of its highly magnetic white dwarf companion in this depiction of a so-called intermediate polar binary system. Gas lost from the red star is channelled toward the white dwarf ’s poles along magnetic field lines, where it emits ...
The Gould Belt
... nebulae of the Gould belt. These are dwarfs in late spectral classes with masses of ≈ 1M⊙ and ages of several million years that have not reached the Main sequence stage. Stars have also been identified in terms of their emission in the HJ line, their lithium abundance, xray emission, position in the ...
... nebulae of the Gould belt. These are dwarfs in late spectral classes with masses of ≈ 1M⊙ and ages of several million years that have not reached the Main sequence stage. Stars have also been identified in terms of their emission in the HJ line, their lithium abundance, xray emission, position in the ...
Sample pages 1 PDF
... However, he could not explain this possible relationship. Was it that of cause and effect between the two, or was there something else involved that “… gave origin to both the change of weather and the meteors?” (Olmsted 1834a, p. 402). The meteors were at their most striking in frequency and brilli ...
... However, he could not explain this possible relationship. Was it that of cause and effect between the two, or was there something else involved that “… gave origin to both the change of weather and the meteors?” (Olmsted 1834a, p. 402). The meteors were at their most striking in frequency and brilli ...
here - Ira-Inaf
... sources in the galactic plane. This latter survey differs from the Wouterloot and Brand (1989) survey in that the CS(2-1) line traces denser molecular gas than the CO(1–0) line, and the Bronfman et al. catalogue includes full coverage of the first galactic quadrant. From these 3 sources, we selected ...
... sources in the galactic plane. This latter survey differs from the Wouterloot and Brand (1989) survey in that the CS(2-1) line traces denser molecular gas than the CO(1–0) line, and the Bronfman et al. catalogue includes full coverage of the first galactic quadrant. From these 3 sources, we selected ...
4. in-flight calibration plan
... light pulse is ~ 0.02 mm FWHM, limiting the intensifier resolution to approximately 25 linepairs per mm. For CIPS the intensifier is equipped with a P-43 phosphor, which peaks at a wavelength of ~545 nm and decays in intensity by a factor of 103 within 0.01 seconds after each pulse. The voltage betw ...
... light pulse is ~ 0.02 mm FWHM, limiting the intensifier resolution to approximately 25 linepairs per mm. For CIPS the intensifier is equipped with a P-43 phosphor, which peaks at a wavelength of ~545 nm and decays in intensity by a factor of 103 within 0.01 seconds after each pulse. The voltage betw ...
arXiv:astro-ph/0508448v1 22 Aug 2005
... However, the above assumes that all supernovae are equal – that is, that the distribution of parameters which produce WR evolution in the secondary1 and the distribution of parameters which produce an asymmetric SN explosion which unbinds the system are completely unrelated. In reality this is unlik ...
... However, the above assumes that all supernovae are equal – that is, that the distribution of parameters which produce WR evolution in the secondary1 and the distribution of parameters which produce an asymmetric SN explosion which unbinds the system are completely unrelated. In reality this is unlik ...
doc - Pocket Stars
... an improved fix from two or more LOPs. You can select from amongst the previously acquired observations by checking the associated checkbox. The results are shown in red text in the lower left corner. These include: ...
... an improved fix from two or more LOPs. You can select from amongst the previously acquired observations by checking the associated checkbox. The results are shown in red text in the lower left corner. These include: ...
Detection and Discovery of Near-Earth Asteroids by the LINEAR
... capacity, now use the step-stare approach, which was first implemented in 1995 with the Near-Earth Asteroid Tracking (NEAT) program [4], a joint project between NASA’s Jet Propulsion Laboratory and the U.S. Air Force. A step-stare system works much like a traditional film-based search, with multiple ...
... capacity, now use the step-stare approach, which was first implemented in 1995 with the Near-Earth Asteroid Tracking (NEAT) program [4], a joint project between NASA’s Jet Propulsion Laboratory and the U.S. Air Force. A step-stare system works much like a traditional film-based search, with multiple ...
Metal-poor Stars
... The first stars that formed from the pristine gas left after the Big Bang were very massive (Bromm et al. 2002). After a very short life time these co-called Population III stars exploded as supernovae, which then provided the first metals to the interstellar medium. All subsequent generations of st ...
... The first stars that formed from the pristine gas left after the Big Bang were very massive (Bromm et al. 2002). After a very short life time these co-called Population III stars exploded as supernovae, which then provided the first metals to the interstellar medium. All subsequent generations of st ...
Cosmic View The Universe in 40 Jumps
... vivid way of imparting a “sense of scale.” He had developed it for years, perfecting the drawings and adding more and more information to them. Their plotting had been a towering job, for he was determined that every object shown should be in the correct relationship to every other as to position, s ...
... vivid way of imparting a “sense of scale.” He had developed it for years, perfecting the drawings and adding more and more information to them. Their plotting had been a towering job, for he was determined that every object shown should be in the correct relationship to every other as to position, s ...
1957_boeke_cosmic view
... vivid way of imparting a “sense of scale.” He had developed it for years, perfecting the drawings and adding more and more information to them. Their plotting had been a towering job, for he was determined that every object shown should be in the correct relationship to every other as to position, s ...
... vivid way of imparting a “sense of scale.” He had developed it for years, perfecting the drawings and adding more and more information to them. Their plotting had been a towering job, for he was determined that every object shown should be in the correct relationship to every other as to position, s ...
Extrasolar Planets: An Amateur`s Search
... star. As stars age, they fuse together lighter elements to create heavier elements, thus Fe/H also represents, in some ways, a star’s age. Finally, the luminosity of a star is the total energy radiated from the star. 2 Each of these is analyzed in this study to better determine which, if any, are si ...
... star. As stars age, they fuse together lighter elements to create heavier elements, thus Fe/H also represents, in some ways, a star’s age. Finally, the luminosity of a star is the total energy radiated from the star. 2 Each of these is analyzed in this study to better determine which, if any, are si ...
The Search for Directed Intelligence
... effects which would otherwise be overwhelming for a broadband photometric band survey. Heterodyning is also possible could be used in the future but is not assumed as we do not posses large focal plane arrays of such detectors. 5.2 Cosmic IR Background - CIB The CIB was first detected by the Diffuse ...
... effects which would otherwise be overwhelming for a broadband photometric band survey. Heterodyning is also possible could be used in the future but is not assumed as we do not posses large focal plane arrays of such detectors. 5.2 Cosmic IR Background - CIB The CIB was first detected by the Diffuse ...
PH607lec08
... The formula z = v / c implies that you can't have redshifts greater than one because that would give you a velocity greater than the speed of light, something not permitted by the laws of physics. ...
... The formula z = v / c implies that you can't have redshifts greater than one because that would give you a velocity greater than the speed of light, something not permitted by the laws of physics. ...
Document
... identify and subtract the signal in its detection band from every merging neutron star and black hole binary in the universe. It will also extend LISA’s scientific program of measuring wavesfrom the merging of intermediate-mass black holes at any redshift, and will refine the mapping of space-time a ...
... identify and subtract the signal in its detection band from every merging neutron star and black hole binary in the universe. It will also extend LISA’s scientific program of measuring wavesfrom the merging of intermediate-mass black holes at any redshift, and will refine the mapping of space-time a ...
UK Exoplanet community meeting 2017
... Discussion and Q&A: Stellar Activity in Exoplanet Surveys Heather Cegla & Raphaëlle Haywood (University of Geneva, Harvard-Smithsonian Center for Astrophysics) Discussion and Q&A: Stellar Activity in Exoplanet Surveys – Dr Heather Cegla and Dr Raphaëlle Haywood – The main obstacle that we current ...
... Discussion and Q&A: Stellar Activity in Exoplanet Surveys Heather Cegla & Raphaëlle Haywood (University of Geneva, Harvard-Smithsonian Center for Astrophysics) Discussion and Q&A: Stellar Activity in Exoplanet Surveys – Dr Heather Cegla and Dr Raphaëlle Haywood – The main obstacle that we current ...
A search for debris disks in the Herschel
... within the main sequence locus (see Fig. 2). Within this sample we expect considerable contamination from dust obscured QSOs or unresolved galaxies whose optical colours are reddened into the main sequence locus (Ivezić et al. 2002). Indeed, the sample have a median r-band magnitude of 19.8, fainte ...
... within the main sequence locus (see Fig. 2). Within this sample we expect considerable contamination from dust obscured QSOs or unresolved galaxies whose optical colours are reddened into the main sequence locus (Ivezić et al. 2002). Indeed, the sample have a median r-band magnitude of 19.8, fainte ...
the orbits of neptune`s outer satellites
... known (Nereid included) outer satellites of Neptune could be imaged on just two Suprime-Cam fields. We thus oriented two Suprime-Cam fields in order to recover all known outer satellites of Neptune. The images were visually blinked in order to recover the known satellites and search for new satellit ...
... known (Nereid included) outer satellites of Neptune could be imaged on just two Suprime-Cam fields. We thus oriented two Suprime-Cam fields in order to recover all known outer satellites of Neptune. The images were visually blinked in order to recover the known satellites and search for new satellit ...
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.