Telluric Line Removal in Astrophysical Spectroscopy
... data from CCDs comes without wavelength calibration. Spectroscopic data comes in a series of orders which are basically chunks of the spectrum. CCDs do not have continuous coverage of all wavelengths, but have missing wavelengths between the orders. Sometimes several orders will even overlap each ot ...
... data from CCDs comes without wavelength calibration. Spectroscopic data comes in a series of orders which are basically chunks of the spectrum. CCDs do not have continuous coverage of all wavelengths, but have missing wavelengths between the orders. Sometimes several orders will even overlap each ot ...
THE DAWN OF X-RAY ASTRONOMY
... termined that Sco X–1 could not have the thermal spectrum that would be expected from neutron stars (Giacconi et al., 1965),6 which implied that an optical counterpart should have magnitude 13. In a first rocket flight to measure the angular size of the source it was found to be less than 7 arc sec ...
... termined that Sco X–1 could not have the thermal spectrum that would be expected from neutron stars (Giacconi et al., 1965),6 which implied that an optical counterpart should have magnitude 13. In a first rocket flight to measure the angular size of the source it was found to be less than 7 arc sec ...
8 m Club Meeting - Adaptive optics
... Measurement of zodiacal dust around nearby stars using nulling (TPF) ...
... Measurement of zodiacal dust around nearby stars using nulling (TPF) ...
20. Meteorites and the chemical evolution of the Milky Way
... G dwarfs. G dwarfs are actually massive enough that some of them have begun to evolve away from the main sequence, which requires that a correction be applied to the metallicity distribution. Note, however, that stars with lower masses, such as K or M dwarfs, show the same discrepancy between the ob ...
... G dwarfs. G dwarfs are actually massive enough that some of them have begun to evolve away from the main sequence, which requires that a correction be applied to the metallicity distribution. Note, however, that stars with lower masses, such as K or M dwarfs, show the same discrepancy between the ob ...
Chandra Characterization of X-ray Emission in the Young F
... sweet spot of the S3 chip. We re-processed the Chandra data with CIAO version 4.8 (Fruscione et al. 2006), which applied the energy dependent sub-pixel event repositioning. The total program observing time was 39 ksec, and the total on-target observing time was 37.3 ksec, in which 1509 total raw pho ...
... sweet spot of the S3 chip. We re-processed the Chandra data with CIAO version 4.8 (Fruscione et al. 2006), which applied the energy dependent sub-pixel event repositioning. The total program observing time was 39 ksec, and the total on-target observing time was 37.3 ksec, in which 1509 total raw pho ...
Stardust--Snapshots of Stars
... A group of researchers from Washington University in St. Louis, Missouri and the Carnegie Institution of Washington collaborated with CAMECA to develop and implement an exciting new automated analysis technique on the NanoSIMS that expands on automated methods developed in the early 2000s to study p ...
... A group of researchers from Washington University in St. Louis, Missouri and the Carnegie Institution of Washington collaborated with CAMECA to develop and implement an exciting new automated analysis technique on the NanoSIMS that expands on automated methods developed in the early 2000s to study p ...
A spectroscopic investigation of the O-type star - ORBi
... Results. We confirm the binarity for four objects: HD 193443, HD 228989, HD 229234 and HD 194649. We derive for the first time the orbital solutions of three systems, and we confirm the values of the fourth, showing that these four systems all have orbital periods shorter than 10 days. Besides these ...
... Results. We confirm the binarity for four objects: HD 193443, HD 228989, HD 229234 and HD 194649. We derive for the first time the orbital solutions of three systems, and we confirm the values of the fourth, showing that these four systems all have orbital periods shorter than 10 days. Besides these ...
oC - geogreenapps
... parchue the large maps, it is DOW _eel with the large maps in miniature, intel'8pemed among the le8IOIUL Theee beiDg exact copies of the Originals, though upon a .maller leale, we have not only a magnidcent let of charts for lectu1'e8 and illWltratioos in the school-room, bot each learner has a set ...
... parchue the large maps, it is DOW _eel with the large maps in miniature, intel'8pemed among the le8IOIUL Theee beiDg exact copies of the Originals, though upon a .maller leale, we have not only a magnidcent let of charts for lectu1'e8 and illWltratioos in the school-room, bot each learner has a set ...
83-98
... to an uncertainty of 0.07 kpc in ξp and 0.56 kpc in ηp . The errors in space velocities do not affect the birthsites significantly. An error of 5.0 km s-l in U and V space velocity components only caused an error of 0.25 kpc over the time span of 3.0 × 107yr. It is due to the fact that the differenc ...
... to an uncertainty of 0.07 kpc in ξp and 0.56 kpc in ηp . The errors in space velocities do not affect the birthsites significantly. An error of 5.0 km s-l in U and V space velocity components only caused an error of 0.25 kpc over the time span of 3.0 × 107yr. It is due to the fact that the differenc ...
Document
... Corresponding 5σ detectable mass: 110 MJ, 80 MJ, 70 MJ No further binary candidate was detected outer than 0.5’’ massive planets and brown dwarfs were not excluded at this point ...
... Corresponding 5σ detectable mass: 110 MJ, 80 MJ, 70 MJ No further binary candidate was detected outer than 0.5’’ massive planets and brown dwarfs were not excluded at this point ...
Document
... it available to large optical telescopes on earth. The galaxies are observed through carefully chosen filters in the UV, blue, and red spectral regions. The signature of an LBG is that its image should be bright in the two longer wavebands, but should not be present in the UV waveband (Steidel et al ...
... it available to large optical telescopes on earth. The galaxies are observed through carefully chosen filters in the UV, blue, and red spectral regions. The signature of an LBG is that its image should be bright in the two longer wavebands, but should not be present in the UV waveband (Steidel et al ...
Can we account for the dust
... Mid- and far-IR emission of galaxies ◦ Thermal emission from dust grains ...
... Mid- and far-IR emission of galaxies ◦ Thermal emission from dust grains ...
Grade 9 Space Review 50KB Nov 18 2009 10:52:00 AM
... 31. The Sun emits not only visible light but also other forms of radiation. List some of these other forms and their effect on living things on Earth. Write your answer in complete sentences. 32. What advice would you give to dedicated sunbathers? Why? Publish your advice in the school newspaper. 33 ...
... 31. The Sun emits not only visible light but also other forms of radiation. List some of these other forms and their effect on living things on Earth. Write your answer in complete sentences. 32. What advice would you give to dedicated sunbathers? Why? Publish your advice in the school newspaper. 33 ...
Astronomy 250 - University of Victoria
... do the same calculation over and over (i.e. for different stars), then show one calculation and then put the other results in a table. RESULTS The result of a lab is often a number. You must remember to quote an uncertainty for your result. You must also remember to quote the units (kilometers, ligh ...
... do the same calculation over and over (i.e. for different stars), then show one calculation and then put the other results in a table. RESULTS The result of a lab is often a number. You must remember to quote an uncertainty for your result. You must also remember to quote the units (kilometers, ligh ...
Starry Night Companion - Starry Night Education
... had been: Instead of the center of the universe, Copernicus said, our world is one of many planets and moons circling the Sun in a celestial clockwork. Some 250 years later the Apollo 8 astronauts became the first humans to see the truth of this with their own eyes. As they made history’s first voya ...
... had been: Instead of the center of the universe, Copernicus said, our world is one of many planets and moons circling the Sun in a celestial clockwork. Some 250 years later the Apollo 8 astronauts became the first humans to see the truth of this with their own eyes. As they made history’s first voya ...
Collisions and Encounters of Stellar Systems
... ∼ L! ) is n ≈ φ! ≈ 10 Mpc . Most of the stars in a typical luminous galaxy are contained within a radius R ≈ 10 kpc, so the collision cross-section between two such galaxies is Σ ≈ π(2R)2 . If the positions and velocities of the galaxies are uncorrelated, the rate at which an L! galaxy suffers colli ...
... ∼ L! ) is n ≈ φ! ≈ 10 Mpc . Most of the stars in a typical luminous galaxy are contained within a radius R ≈ 10 kpc, so the collision cross-section between two such galaxies is Σ ≈ π(2R)2 . If the positions and velocities of the galaxies are uncorrelated, the rate at which an L! galaxy suffers colli ...
Diapositiva 1
... Estimated precisions for G for one transit on the focal plane with respect to the G The shape for bright stars is due to the decrease of the exposure time to avoid saturation of the pixels. ...
... Estimated precisions for G for one transit on the focal plane with respect to the G The shape for bright stars is due to the decrease of the exposure time to avoid saturation of the pixels. ...
Giuseppe Piazzi and the Discovery of Ceres
... Oriani favours its planetary nature.” It is evident at this point that Piazzi decided to write to Bode, who was known for helping to create the Titius-Bode law, just to probe his reaction. Unfortunately for Piazzi, the letters reached Bode on March 20 and Oriani on April 5. On February 27, Lalande, ...
... Oriani favours its planetary nature.” It is evident at this point that Piazzi decided to write to Bode, who was known for helping to create the Titius-Bode law, just to probe his reaction. Unfortunately for Piazzi, the letters reached Bode on March 20 and Oriani on April 5. On February 27, Lalande, ...
2015 - Society for Astronomical Sciences
... In the past decade or so, the influence on small asteroids of the YORP (Yarkovsky-O'Keefe-RadzievskiiPaddack) effect, which is the asymmetric thermal emission of received sunlight, has been firmly established. The two strongest pieces of evidence are the nearly flat distribution of rotation rates of ...
... In the past decade or so, the influence on small asteroids of the YORP (Yarkovsky-O'Keefe-RadzievskiiPaddack) effect, which is the asymmetric thermal emission of received sunlight, has been firmly established. The two strongest pieces of evidence are the nearly flat distribution of rotation rates of ...