arXiv subjects

T. Kılıcoğlu

Publications and source records attributed to T. Kılıcoğlu.

2 recordsLinked to original sources

arXiv2017

The flat bottomed lines of Vega

Using one high dispersion high quality spectrum of Vega (HR7001, A0V) obtained with the echelle spectrograph SOPHIE at Observatoire de Haute Provence, we have measured the centroids of 149 flat-bottomed lines. The model atmosphere and spectrum synthesis modeling of the spectrum of Vega allows us to provide identifications for all these lines. Most of these lines are due to C I, O I, Mg I, Al I, Ca I, Sc II,Ti II, Cr I, Cr II, Mn I, Fe I, Fe II, Sr II, Ba II, the large majority being due to neutral species, in particular Fe I.

astro-ph.SR↗

arXiv2017

HR 7098: A new cool HgMn star?

Using one archival high dispersion high quality spectrum of HR 7098 (A0V) obtained with the échelle spectrograph SOPHIE at Observatoire de Haute Provence, we show that this star is not a superficially normal A0V star as hitherto thought. The model atmosphere and spectrum synthesis modeling of the spectrum of HR 7098 reveals real departures of its abundances from the solar composition. We report here on our first determinations of the elemental abundances of 35 elements in the atmosphere of HR 7098. Helium and Carbon are underabundant whereas the very heavy elements are overabundant in HR 7098.

astro-ph.SR↗