... Ahmad and Jeffery completed a study of the temperature distribution of helium-rich subdwarf B (He-sdB) stars using ultraviolet and ground-based spectrophotometry. ...
... K.M., Hibbert, A., Keenan, M.T.C., Madjarska, M.S. , Mathioudakis, M., Pollacco, D.L., 2002, "The OIV and SIV intercombination lines in the ultraviolet spectra of astrophysical sources'', Monthly Notices of the Royal Astronomical Society, 337, 901-909 ...
... This discovery explained why the star had appeared to be completely different when observed in the optical, where both stars have a similar brightness, and when observed in the far ultraviolet, where only the hotter star is seen. ...
... The infrared spectra display emission lines from excited molecules of hydrogen which can be separated into components excited by ultraviolet fluorescence and collisional shock waves. ...
... lines in their optical spectra and Ciii/iv lines in their ultraviolet (UV) spectra ... observed twice with the Far Ultraviolet Spectro- scopic Explorer (FUSE) satellite ...
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Ссылки http://star.arm.ac.uk/~csj/papers/conference/2005ehb_ahmad_hesdbs.ps -- 1586.3 Кб -- 21.10.2005 Похожие документы
... Observations he made of four helium stars with the orbiting International Ultraviolet Explorer (IUE) observatory demonstrated that they were getting hotter by 30=AD120 degrees per year. ...