Planetary nebula NGC6543 has a complex structure with a central hot bubble showing both point- and plane symmetry, and a large outer halo that is likely...
Spectroscopic Ages of Elliptical Galaxies - Subaru Observation
Breaking age/metallicity degeneracy ([19], [1]) is crucial for understanding stellar populations in elliptical galaxies. Spectroscopic properties, such as line...
Spectroscopic Analyses of Massive Blue Stars (Galactic or Extragalactic)
We review recent advances in our understanding of massive stars through the analysis of their spectra. Improvements in model atmospheres and analysis methods...
Spectroscopic analysis of 348 red giants (Zielinski+, 2012)
The atmospheric parameters were derived using a strictly spectroscopic method based on the LTE analysis of equivalent widths of FeI and FeII lines. With...
Spectroscopic analysis of 348 red giants. II. (Adamow+, 2014)
This work is based on the Hobby-Eberly Telescope spectra obtained with the High Resolution Spectrograph, which we use for determination of abundances and...
Spectroscopic analysis of A- and F-type stars observed in the Kepler field
We present results obtained from a spectroscopic analysis of high-resolution spectra taken with the ESPADONS spectrograph at the Canada-France-Hawaii Telescope...
Spectroscopic Analysis of Cyg OB2 Supergiants Using Unified Model Atmospheres
We present first results of an spectroscopic analysis of 7 O supergiants in Cyg OB2 using two different model atmosphere codes (Santolaya-Rey, Puls, Herrero...