Spitzer Spectroscopy of Circumstellar Disks in the 5 Myr Old Upper
... µm. These results imply that the mechanisms responsible for disk dispersal operate more efficiently for high mass stars than for their low-mass counterparts. Consequently, longer timescales may be available for the buildup of planetesimals and planetary systems within the terrestrial zone for stars ...
... µm. These results imply that the mechanisms responsible for disk dispersal operate more efficiently for high mass stars than for their low-mass counterparts. Consequently, longer timescales may be available for the buildup of planetesimals and planetary systems within the terrestrial zone for stars ...
The Terrestrial Planet Finder Mission
... Most of them have been discovered by detecting a sinusoidal doppler shift in the parent star’s spectrum due to gravitationally induced wobble. ...
... Most of them have been discovered by detecting a sinusoidal doppler shift in the parent star’s spectrum due to gravitationally induced wobble. ...
Present-day cosmic abundances - Dr. Karl Remeis
... standard, which has been subject of active research in the past decades and it is still subject of continuous revision and improvement based on the modeling of its convective outer envelope and the radiative transfer in 3D models (e.g. Asplund et al. 2009; Lodders et al. 2009; Caffau et al. 2010, an ...
... standard, which has been subject of active research in the past decades and it is still subject of continuous revision and improvement based on the modeling of its convective outer envelope and the radiative transfer in 3D models (e.g. Asplund et al. 2009; Lodders et al. 2009; Caffau et al. 2010, an ...
Carl Sagan - Cosmos (1980) [Full Color Illustrated
... neutrinos. Some proposed explanations are listed. In Chapter 10 we wonder whether there is enough matter in the universe eventually to stop the recession of distant galaxies, and whether the universe is infinitely old and therefore uncreated. Some light on both these questions may since have been ca ...
... neutrinos. Some proposed explanations are listed. In Chapter 10 we wonder whether there is enough matter in the universe eventually to stop the recession of distant galaxies, and whether the universe is infinitely old and therefore uncreated. Some light on both these questions may since have been ca ...
Annual Report 2010 - Koninklijke Sterrenwacht van België
... requirement for the clock precision and stability is at the level of the nanosecond over one day, which can only be achieved with high-quality clocks, when located in temperature-controlled environment. Our six clocks are located in such an environment and their performances are continuously monitor ...
... requirement for the clock precision and stability is at the level of the nanosecond over one day, which can only be achieved with high-quality clocks, when located in temperature-controlled environment. Our six clocks are located in such an environment and their performances are continuously monitor ...
solon irving bailey - National Academy of Sciences
... Sunshine." There at Carmen Alto, 8,000 feet high and two miles from the center of the town, the Boyden Station remained for thirty-five years. With the training in photometric work already acquired in Cambridge, it was natural that Bailey's first southern investigation should be made visually. The r ...
... Sunshine." There at Carmen Alto, 8,000 feet high and two miles from the center of the town, the Boyden Station remained for thirty-five years. With the training in photometric work already acquired in Cambridge, it was natural that Bailey's first southern investigation should be made visually. The r ...
A spectroscopic study of detached binary systems using precise radial velocities
... astrometric and spectroscopic techniques in recent years, it is hoped that many more binary systems will be amenable to these complementary strategies. Several months after this thesis began, a high-resolution spectrograph, Hercules, commenced operations at the Mt John University Observatory, to be ...
... astrometric and spectroscopic techniques in recent years, it is hoped that many more binary systems will be amenable to these complementary strategies. Several months after this thesis began, a high-resolution spectrograph, Hercules, commenced operations at the Mt John University Observatory, to be ...
The CCD Photometric Calibration Cookbook
... of the subject and in sufficient detail to allow you to use the recipes effectively. Many of the finer points and details are deliberately omitted for clarity and brevity. However, references to additional details are given throughout and the next section gives some useful general references. In sum ...
... of the subject and in sufficient detail to allow you to use the recipes effectively. Many of the finer points and details are deliberately omitted for clarity and brevity. However, references to additional details are given throughout and the next section gives some useful general references. In sum ...
Chapter 20
... Its use led to discoveries about distant galaxies that transformed our view of what the Universe is like and what will happen to it and us in the far future (Chapters 16 and 18). ...
... Its use led to discoveries about distant galaxies that transformed our view of what the Universe is like and what will happen to it and us in the far future (Chapters 16 and 18). ...
PDF only - at www.arxiv.org.
... discrepancy between models, and FIR observations. Future heterodyne receivers will take advantage of the recent progress in Hot Electron Bolometer (HEB) technology, providing higher sensitivity. Together with a larger collecting area compared to Herschel observations of ded ...
... discrepancy between models, and FIR observations. Future heterodyne receivers will take advantage of the recent progress in Hot Electron Bolometer (HEB) technology, providing higher sensitivity. Together with a larger collecting area compared to Herschel observations of ded ...
SkyProdigy Series Manual
... sky, which is processed internally to positively identify the stars in the image. Once a positive match is found, SkyProdigy determines the coordinates of the center of the captured image. The process is automatically repeated two more times so that the system has three known alignment points that c ...
... sky, which is processed internally to positively identify the stars in the image. Once a positive match is found, SkyProdigy determines the coordinates of the center of the captured image. The process is automatically repeated two more times so that the system has three known alignment points that c ...
Search For Gas Giants Around Late-m Dwarfs - STARS
... monitored these stars over four epochs in 2007. In addition to the measurement of relative radial velocity we established physical properties of these stars. The physical properties of M dwarfs we determined included the identification of neutral atomic lines, the measurement of pseudo-equivalent wi ...
... monitored these stars over four epochs in 2007. In addition to the measurement of relative radial velocity we established physical properties of these stars. The physical properties of M dwarfs we determined included the identification of neutral atomic lines, the measurement of pseudo-equivalent wi ...
the PDF - Montana State University
... B.10 HD 76151 time series and periodogram............................................. 230 B.11 HD 78366 time series and periodogram............................................. 231 B.12 HD 81809 time series and periodogram............................................. 231 B.13 HD 97334 time series a ...
... B.10 HD 76151 time series and periodogram............................................. 230 B.11 HD 78366 time series and periodogram............................................. 231 B.12 HD 81809 time series and periodogram............................................. 231 B.13 HD 97334 time series a ...
The Alpha Centauri binary system
... published analyses of its atmospheric parameters and abundances. Aims. We compare the many published analyses of the system, and attempt to resolve the significant discrepancies still extant in the determinations of the atmospheric parameters and abundances of these stars. Methods. We report a detai ...
... published analyses of its atmospheric parameters and abundances. Aims. We compare the many published analyses of the system, and attempt to resolve the significant discrepancies still extant in the determinations of the atmospheric parameters and abundances of these stars. Methods. We report a detai ...
observations of white dwarfs in the solar neighborhood
... range. The 100 slit gave 3.2 Å spectral resolution (FWHM). The main observing program was focused on accurate radial velocities, and the procedures used gave stability better than 10 km s1. When observing at substantial air masses, we rotated the slit to the parallactic angle, avoiding atmospheri ...
... range. The 100 slit gave 3.2 Å spectral resolution (FWHM). The main observing program was focused on accurate radial velocities, and the procedures used gave stability better than 10 km s1. When observing at substantial air masses, we rotated the slit to the parallactic angle, avoiding atmospheri ...
Galaxies Astronomy 1 — Elementary Astronomy LA Mission College Spring F2015
... A. It would inevitably get sucked into the black hole with no possibility of escape. B. It would detect the gravitational pull of the black hole and be able to go into orbit around it. C. It would be unable to locate the black hole because it’s, well, black. D. It would be repelled by the black hole ...
... A. It would inevitably get sucked into the black hole with no possibility of escape. B. It would detect the gravitational pull of the black hole and be able to go into orbit around it. C. It would be unable to locate the black hole because it’s, well, black. D. It would be repelled by the black hole ...
- National Optical Astronomy Observatory
... Active longitudes have been theorized to be the points of origination for sunspots. Using the Carrington Longitude, the path of the sunspots can be tracked, and using this method, the active longitude can be found. After comparing the Carrington longitude and local longitude, it was difficult to fin ...
... Active longitudes have been theorized to be the points of origination for sunspots. Using the Carrington Longitude, the path of the sunspots can be tracked, and using this method, the active longitude can be found. After comparing the Carrington longitude and local longitude, it was difficult to fin ...
SPICA Yellow Book
... A complete understanding of the formation and evolution of galaxies, stars and planets can only be reached through the investigation of the cold and obscured parts of the Universe, where the basic processes of formation and evolution occur. Deep exploration of the cold Universe using high spatial re ...
... A complete understanding of the formation and evolution of galaxies, stars and planets can only be reached through the investigation of the cold and obscured parts of the Universe, where the basic processes of formation and evolution occur. Deep exploration of the cold Universe using high spatial re ...
MANU-CHAO: A Ground-Layer Adaptive Optics Experiment for the
... • Multiple Sodium: – good correction over a large field – compromise between FoV and Strehl-ratio on-axis ...
... • Multiple Sodium: – good correction over a large field – compromise between FoV and Strehl-ratio on-axis ...