Naslov
Problems in abundance determination from UV spectra of hot supergiants

Autori
Sarta Deković, Mariza ; Kotnik-Karuza, Dubravka ; Jurkić, Tomislav ; Dominis Prester, Dijana

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Chemical Abundances in the Universe: Connecting First Stars to Planets ; Proceedings IAU Symposium No. 265, vol 5, 2009 / Katia Cunha, Monique Spite, Beatriz Barbuy - : Cambridge University Press, 2009, 211-212

Skup
International Astronomical Union, XXVIIth General Assembly

Mjesto i datum
Rio de Janeiro, Brazil, 03.08.2009. - 14.08.2009

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
supergiants; abundances; UV

Sažetak
We present measurements of equivalent widths of the UV, presumably photospheric lines: C III 1247 °A, N III 1748 °A, N III 1752 °A, N IV 1718 °A and He II 1640 °A in highresolution IUE spectra of 24 galactic OB supergiants. Equivalent widths measured from the observed spectra have been compared with their counterparts in the Tlusty NLTE synthetic spectra. We discuss possibilities of static plan-parallel model to reproduce observed UV spectra of hot massive stars and possible reasons why observations di®er from the model so much.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA