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Titlebook: B[e] Stars; Anne Marie Hubert,Carlos Jaschek Book 1998 Springer Science+Business Media B.V. 1998 Galaxy.LOPES.galaxies.interferometry.phot

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發(fā)表于 2025-3-21 17:00:23 | 只看該作者 |倒序瀏覽 |閱讀模式
期刊全稱B[e] Stars
影響因子2023Anne Marie Hubert,Carlos Jaschek
視頻videohttp://file.papertrans.cn/181/180175/180175.mp4
學(xué)科分類Astrophysics and Space Science Library
圖書封面Titlebook: B[e] Stars;  Anne Marie Hubert,Carlos Jaschek Book 1998 Springer Science+Business Media B.V. 1998 Galaxy.LOPES.galaxies.interferometry.phot
影響因子The idea of having a meeting came to the Editors when working on several aspects of galactic Be and B[e] stars. They found that a general summary of the properties of B[e] stars was missing, so that the organiza- tion of a first meeting on these objects appeared as very useful. B[e] stars have hydrogen line emission and forbidden [Fe 11] and [0 I] emission lines in their spectra; they are also characterized by a strong IR excess due to circumstellar dust. Having a large amount of extinction in the UV and the visual they have been less frequently observed than other emission line objects. Although about one hundred galactic objects have been classified as B[e], only fif- teen or so have been studied in some detail. Besides this, the evolutionary status of these objects is rat her controversial, are they pre-main sequence or stars on the way to become nUclei of planetary nebulae? Other difficult problems appear when considering the relations of these stars with other similar groups, like Herbig AeBe stars, Be, luminous blue variables and the superluminous B[e] stars observed in the Magellanic Clouds. The conference seems timely since large surveys like DENIS and 2Mass, plus new space
Pindex Book 1998
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書目名稱B[e] Stars影響因子(影響力)




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書目名稱B[e] Stars網(wǎng)絡(luò)公開度學(xué)科排名




書目名稱B[e] Stars被引頻次




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978-90-481-5080-9Springer Science+Business Media B.V. 1998
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B[e] Stars978-94-015-9014-3Series ISSN 0067-0057 Series E-ISSN 2214-7985
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The Self Absorption Curve Method for the Analysis of Emission Lines of Complex Ions as a Diagnostic tellar envelope. Information can be obtained notably about the excitation conditions, the column density and the dimensions of the line emitting region, without making detailed model dependent complex radiative transfer computations. This method is particularly useful in the study of B[e] star envelopes.
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The High Excitation Fe II Lines as a Diagnostics of the Outer Envelopes of Early Type Emission Line malously high intensities. We illustrate the case of the high excitation Fe . lines observed in the ultraviolet and near—IR of different stellar categories, and discuss the information which can be derived from their study.
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Rapid Spectral Variability and Spatial and Kinematical Structure of Circumstellar Envelopes of Some tellar envelopes around peculiar Ae/Be stars. The method involved is based on a search for rapid line-profile variability of lines originating in different circumstellar regions. Analysis of these variations opens the way for reconstructing the density and velocity distributions throughout the envelope.
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