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A cool giant with a circumstellar cloud (1991)

Gurzadyan, G. A. ; Kondo, Y. ; Ohanesyan, J. B. ; [et al.]

Springer

Astrophysics and space science 176 (1991), S. 61-68

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ISSN: 1572-946X

Source: Springer Online Journal Archives 1860-2000

Topics: Physics

Notes: Abstract The IUE spectrum of the star HD 139521, a giant of class G8III is obtained and based on the analysis of the narrow structure of 2795 (k) and 2803 (h) MgII emission profiles, the existence of a circumstellar cloud around the giant star is assumed. This conclusion is confirmed also by the anomaly of the small observed power of the doublet MgII emission at 2800. The absorption cores on the peaks of the emission profiles MgII k andh are mainly of interstellar origin and only partly — due to self-absorption in the star's chromosphere.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00643077

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