... We calculate radial and vertical abundance gradients of C, N, O, Ne, Ar, Cl and S depending of different ages of the central star of the nebula. ...
... Manifestations of the Stellar Wind of the Central Star of a Planetary Nebula ... Oxygen Ions in the Spectra of Planetary Nebulas - Part Two - Intensities of the CII ...
... of gas and dust in the reflection nebula Ced 201 were analyzed by Kemper et al ... observations and physical models of the reflection nebula Cederblad 201 ...
... nebula is formed, the matter of the outer stellar layers becomes the nebula's matter ... nebula carries information both about the chemical composition of the interstellar ...
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Ссылки http://www.astro.spbu.ru/staff/afk/Papers/2006/ChEv2006E.pdf -- 668.5 Кб -- 19.11.2010 Похожие документы
... R Mon is located at a distance of about 800 pc (Jones & Herbig 1982) and illuminates the famous fan-shaped reflection nebula NGC 2261, also known as Hubble's variable nebula. ...
... The sp ectrum of a gaseous nebula consists of weak continuous emission sp ectrum sup ... Thus, the energy irradiated by a nebula in recombination line with wavelength jk is ... The integration covers whole volume of a nebula. ...
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Ссылки http://www.astro.spbu.ru/staff/afk/AtDatCentre/AtDatCat/Chapter4.pdf -- 95.9 Кб -- 19.11.2010 Похожие документы
... nebula, and capable of ionizing hydrogen atoms and helium ions, are absorbed in the ... nebula can be represented as the energy emitted in this line by a homogeneous nebula ...
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Ссылки http://www.astro.spbu.ru/staff/afk/Papers/2008/Kholtygin2008NeTediagnE.pdf -- 157.1 Кб -- 19.11.2010 Похожие документы
... Assume that we have a set of observed line intensities referred to the whole nebula or to a part of the obs obs obs obs nebula: I1 ,I2 ,I3 , .. ...
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Ссылки http://www.astro.spbu.ru/staff/afk/Papers/1998/InhomPNe1998.pdf -- 434.1 Кб -- 19.11.2010 Похожие документы
... nebula is the sum of the large-scale fluctuations related to the relatively slow ... passes from a single-temperature nebula to a nebula with the same mean temperature ...
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Ссылки http://www.astro.spbu.ru/staff/afk/Papers/2009/MilanovaKholtygin2009E.pdf -- 791.2 Кб -- 19.11.2010 Похожие документы