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Pregled bibliografske jedinice broj: 85366

Časopis

Autori: Jurdana, Rajka; Kotnik-Karuza, Dubravka
Naslov: Search for the remnants of the 1977-1986 outburst in the quiescent phase of CH Cygni
( Search for the remnants of the 1977-1986 outburst in the quiescent phase of CH Cygni )
Izvornik: Astronomy and Astrophysics Supplement Series 108 (1994); 533-545
Vrsta rada: članak
Ključne riječi: stars:CH Cyg - binaries: symbiotics - stars:atmospheres
( stars:CH Cyg - binaries: symbiotics - stars:atmospheres )
Sažetak:
We present the results of spectroscopic measurements of line spectra of the symbiotic star CH Cygni in the optical region of the EM spectrum. The observations extend over a period of two years (1987-89) and cover the quiescent state of the star. Although in most spectra the flat transition part of the curve of growth was predominant, a refined fitting procedure made possible the evaluation of the excitation temperature and microturbulent velocity for neutral metals in the red giant's photosphere. A regular decrease of the excitation temperature within the same interval for the investigated elements has been found, with the exception of Fe I for which the temperatures are higher. The microturbulent velocities show small erratic variations around a mean value, which is greater for Fe I than for the other elements. This could be explained by a stratification in the photosphere of the cool component.
Projekt / tema: 009026
Izvorni jezik: eng
Rad je indeksiran u
bazama podataka:
Current Contents Connect (CCC)
SCI-EXP, SSCI i/ili A&HCI
Kategorija: Znanstveni
Znanstvena područja:
Fizika
URL cjelovitog teksta:
Google Scholar: Search for the remnants of the 1977-1986 outburst in the quiescent phase of CH Cygni



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