Pregled bibliografske jedinice broj: 238252
CN status of a sample of galactic OB supergiants
CN status of a sample of galactic OB supergiants // Massive Stars and High-Energy Emission in OB Associations / Rauw, Gregor ; Nazé, Yaël ; Blomme, Ronny ; Gosset, Eric (ur.).
Liege: Université de Liège, 2005. str. 39-42 (poster, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
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Naslov
CN status of a sample of galactic OB supergiants
Autori
Sarta Deković, Mariza ; Kotnik-Karuza, Dubravka
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni
Izvornik
Massive Stars and High-Energy Emission in OB Associations
/ Rauw, Gregor ; Nazé, Yaël ; Blomme, Ronny ; Gosset, Eric - Liege : Université de Liège, 2005, 39-42
Skup
JENAM 2005 Distant Worlds
Mjesto i datum
Liège, Belgija, 04.07.2005. - 07.07.2005
Vrsta sudjelovanja
Poster
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
abundances; OB supergiants; UV spectroscopy; processed material
Sažetak
In search for evidence for the CNO processed material in the atmospheres of galactic OB supergiants we measured the equivalent widths of photospheric lines in the high-resolution IUE spectra. A sample of 36 stars was investigated and the lines He II 1640 Å ; ; , C III 1247 Å ; ; , N IV 1718 Å ; ; and O IV 1339 Å ; ; were studied. All ions show a well-defined dependence on effective temperature. Comparison of stars with questionable CN status with normal stars gives evidence for decrease in equivalent widths of C III and O IV lines accompanied by increase in equivalent widths of N IV and He II lines, which leads to abundance differences.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
