Pregled bibliografske jedinice broj: 85366
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 // Astronomy and astrophysics. Supplement series, 108 (1994), 533-545 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 85366 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Search for the remnants of the 1977-1986 outburst in the quiescent phase of CH Cygni
Autori
Jurdana, Rajka ; Kotnik-Karuza, Dubravka
Izvornik
Astronomy and astrophysics. Supplement series (0365-0138) 108
(1994);
533-545
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
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.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- SCI-EXP, SSCI i/ili A&HCI
