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Infrared Radiation Calibration Based on Infrared Calibration Stars
ACTA PHOTONICA SINICA, 2014A method of calibration based on accurate Infrared standard stars was proposed for increasing infrared radiation measurement precision. By measuring a series of Infrared calibration stars at different air masses, the infrared radiation responsivity of measurement system and atmospheric extinction can be obtained simultaneously.
殷丽梅 YIN Li-mei +7 more
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Infrared observations of symbiotic stars
Journal of Astrophysics and Astronomy, 1993Near infrared measurements in the J, H and K bands have been carried out for a number of symbiotic stars with the 1.5 m telescope at the Rothney Astrophysical Observatory (RAO). A comparison with the earlier observations shows that the S-type symbiotic stars do not have any significant variation in the infrared flux over the past five years.
A. G. Ananth, D. A. Leahy
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Infrared photometry of S stars
Astrophysics, 1981Results are given of observations of 13 S stars in Stephenson's catalog (1976) in the range 0.98-2.39 microns. Observations were made with a 2.6-m reflecting telescope using a PbS detector cooled by carbon dioxide. An infrared excess at 1.75 microns is found for some of the stars, and absorption at 2.39 microns is found for all of them.
A. A. Akopyan +3 more
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Calibrating Mid-Infrared Standard Stars
2008The VLT Spectrometer and Imager for the Mid-Infrared (VISIR) is a Paranal instrument dedicated to observations through the two mid-infrared (MIR) atmospheric windows: N band (8–13 μm) and Q band (16.5–24.5 μm). As part of standard operations, VISIR has been continuously observing MIR standard stars for more than a year.
D. Dobrzycka, L. Vanzi
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Extended infrared emission near stars
2008Extended infrared emission detected near many young stars can be used to divine the luminosity, apparent color temperature, and thermal emitting mass of the surrounding regions. The dominant dust heating mechanism appears to be ultraviolet radiation, either from stellar wind shooks or direct stellar radiation from hotter stars.
F. O. Clark +4 more
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Publications of the Astronomical Society of the Pacific, 1975
Photometric observations of an infrared star in the H, K, and L bands are presented. The star was detected by drift scans of the Hii region RCW 113 at 2.37 .
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Photometric observations of an infrared star in the H, K, and L bands are presented. The star was detected by drift scans of the Hii region RCW 113 at 2.37 .
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Science, 2000
Most of the light in the universe was produced in the Big Bang, appearing today as background radiation coming almost perfectly evenly from all directions on the sky, at wavelengths of 0.8 to 3 millimeters. Light emitted since the Big Bang has come from various sources, such as stars, quasars, and clouds of hot gas.
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Most of the light in the universe was produced in the Big Bang, appearing today as background radiation coming almost perfectly evenly from all directions on the sky, at wavelengths of 0.8 to 3 millimeters. Light emitted since the Big Bang has come from various sources, such as stars, quasars, and clouds of hot gas.
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Infrared Emission of Carbon Stars
1998This review addresses the infrared emission from the most important classes of carbon-rich objects: the N- and R-type carbon stars, the carbon dwarfs and the CH-stars. Examples of carbon rich objects in the Galactic halo and the Magellanic Clouds are discussed. Discrimination of carbon-rich objects against red oxygen-rich objects is investigated.
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Infrared studies of star formation.
Science (New York, N.Y.), 2010The lifetime of a massive star before it begins to deplete its nuclear fuel is less than 5 million years (1). In contrast, the age of the galaxy is more than 10 billion years (2); nevertheless, many massive and short-lived stars have been identified by observations at optical wavelengths.
Werner, M. W. +2 more
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