Results 211 to 220 of about 2,851 (254)
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Stellar Astronomy in the Warm Spitzer Era
AIP Conference Proceedings, 2007We consider the impact on the study of normal stars of large‐scale pointed and mapping observations at 3.6 μm and 4.5 μm with the Spitzer IRAC imager. Deep observations at these wave‐lengths are particularly sensitive to very cool stellar and substellar objects, both as companions to other stars and in the field.
Lisa J Storrie-Lombardi +2 more
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MODERN STELLAR ASTRONOMY – 2022
Астрономический журнал, 2023We provide an analytic review of problems of the modern stellar astronomy. It mostly based on talks presented at the twelfth annual conference on Modern Stellar Astronomy, held in Caucasian Mountain Observatory of Sternberg Astronomical Institute (Kislovodsk, Russia) in November 2022.
O. Yu. Malkov +2 more
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Space Science Reviews, 2003
Coronal astronomy is by now a fairly mature discipline, with a quarter century having gone by since the detection of the first stellar X-ray coronal source (Capella), and having benefitted from a series of major orbiting observing facilities. Serveral observational characteristics of coronal X-ray and EUV emission have been solidly established through ...
Fabio Favata, Giuseppina Micela
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Coronal astronomy is by now a fairly mature discipline, with a quarter century having gone by since the detection of the first stellar X-ray coronal source (Capella), and having benefitted from a series of major orbiting observing facilities. Serveral observational characteristics of coronal X-ray and EUV emission have been solidly established through ...
Fabio Favata, Giuseppina Micela
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Stellar infrared astronomy with EDISON
Space Science Reviews, 1992In this review the IR emission from circumstellar material is discussed, both of ionized gas and dust grains, and the astrophysical information that can be extracted from such observations. Some emphasis is placed on the possibilities of stellar IR astronomy using a large space-borne telescope, especially with respect to the much better spatial and ...
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Virtual Observatory for stellar astronomy
Astronomische Nachrichten, 2013AbstractThe principal idea of the Virtual Observatory is to achieve real transparency for astronomical data, similar to transparency for all the world's documents in the World Wide Web. In the Virtual Observatory, all the world's astronomical data is available from one's desktop.
Malkov, O., Zolotukhin, I.
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Skylab ultraviolet stellar astronomy experiment S019
Applied Optics, 1977An objective-prism stellar spectrograph of 15-cm aperture was flown on all three Skylab missions. The wavelength region from 1300 A to 5000 A was covered by a special optical system containing a combination of reflecting telescope optics, a CaF(2) objective prism, and an achromatized field corrector lens system of CaF(2) and LiF.
F G, O'Callaghan, K G, Henize, J D, Wray
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Advances in Space Research, 1990
Abstract The properties of the X-ray emission from normal stars, i.e., single stars located on the main-sequence or giant branch, are reviewed. Theoretical attempts to explain the observed X-ray emission both from early as well as late type stars are presented and, in particular, coronal length scale determination from spatially unresolved data is ...
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Abstract The properties of the X-ray emission from normal stars, i.e., single stars located on the main-sequence or giant branch, are reviewed. Theoretical attempts to explain the observed X-ray emission both from early as well as late type stars are presented and, in particular, coronal length scale determination from spatially unresolved data is ...
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Far-infrared stellar astronomy
Symposium - International Astronomical Union, 1966The photometer with which I am presently observing stellar radiation responds in the wavelength band extending from 8 to 14 microns. I believe common usage places the boundary between the intermediate and far infrared at 10 microns. From the title of this paper one may therefore infer that what I say today is at least one-third wrong from the start.
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Astronomy is stellar field for younger women
Physics World, 2003Photographs of theoretical physicists are usually few and far between in Britain's tabloid newspapers, but that was not the case last month when Stephen Hawking was pictured enjoying the company of lapdancers at Stringfellows night club in london. Hawking was on a night out with his assistant Mark and two nurses, and delighted Peter Stringfellow when ...
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Stellar Evolution and the Beginning of Galactic Astronomy
1995In the previous chapter we saw how astrophysics grew from the need to understand how stars are constructed and how we can use astrophysics to deduce the internal conditions of stars from their visible properties—including their mass, their size, and their luminosity (their surface temperature, or color in conjunction with their size) by applying the ...
Lloyd Motz, Jefferson Hane Weaver
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