Dust shells around certain early-Type stars with emission lines

Autor:	R. A. Epremian, R. Kh. Hovhannessian
Rok vydání:	1998
Předmět:	Physics Electron density Shell (structure) Astronomy Astronomy and Astrophysics Radius Astrophysics Table (information) Early type Stars Astrophysics::Earth and Planetary Astrophysics Emission spectrum Absorption (electromagnetic radiation) Astrophysics::Galaxy Astrophysics
Zdroj:	Astrophysics. 41:268-276
ISSN:	1573-8191 0571-7256
DOI:	10.1007/bf03036096
Popis:	The results of an investigation of circwnstellar dust shells around 22 early- type stars with emission lines are given. The absorption at 1640 A, the linear sizes, and the masses of the dust shells were determined. They differ from one another (see Table 1). In determining the mass of a shell, the radius of the H II zone was taken into account, where the average electron density in the gaseous shell was taken to be ne = 2.5·105 cm-3.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ba3035dd22580d9c5a92866f985e6843 https://doi.org/10.1007/bf03036096 Zobrazit plný text záznamu Full text from SpringerLink