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Statistical properties of the GALEX spectroscopic stellar sample

Chavez, Miguel; Bertone, Emanuele

The GALEX General Data Release 4/5 includes 174 spectroscopic tiles, obtained from slitless grism observations, for a total of more than 60 000 ultraviolet spectra. We have determined statistical properties of the sample of GALEX stars. We have defined a suitable system of spectroscopic indices, which measure the main mid-UV features at the GALEX …

Atmospheric parameters of the B-supergiant HD 198478 from the UV spectra

Jurkić, Tomislav; Sarta Deković, Mariza; Dominis Prester, Dijana +1 more

We determined atmospheric parameters of the Galactic early B-supergiant HD 198478 (55 Cyg) from the UV silicon lines taken from the high-resolution 1150–1980 Å IUE spectra. TLUSTY numerical code was used to model the stellar atmosphere and to determine the temperature and surface gravity assuming a non-LTE plane parallel hydrostatic stellar atmosp…