SIMBAD references

2019MNRAS.488.2343R - Mon. Not. R. Astron. Soc., 488, 2343-2356 (2019/September-2)

Fundamental parameters and evolutionary status of the magnetic chemically peculiar stars HD 188041 (V1291 Aquilae), HD 111133 (EP Virginis), and HD 204411: spectroscopy versus interferometry.

ROMANOVSKAYA A., RYABCHIKOVA T., SHULYAK D., PERRAUT K., VALYAVIN G., BURLAKOVA T. and GALAZUTDINOV G.

Abstract (from CDS):

The determination of fundamental parameters of stars is one of the main tasks of astrophysics. For magnetic chemically peculiar stars, this problem is complicated by the anomalous chemical composition of their atmospheres, which requires special analysis methods. We present the results of the effective temperature, surface gravity, abundance, and radius determinations for three CP stars HD 188041, HD 111133, and HD 204411. Our analysis is based on a self-consistent model fitting of high-resolution spectra and spectrophotometric observations over a wide wavelength range, taking into account the anomalous chemical composition of atmospheres and the inhomogeneous vertical distribution for three chemical elements: Ca, Cr, and Fe. For two stars, HD 188041 and HD 204411, we also performed interferometric observations that provided us with the direct estimates of stellar radii. Comparison of the radii determined from the analysis of spectroscopic/spectrophotometric observations with direct measurements of the radii by interferometry methods for seven CP stars shows that the radii agree within the limits of measurement errors, which proves indirect spectroscopic analysis capable of proving reliable determinations of the fundamental parameters of fainter Ap stars that are not possible to study with modern interferometric facilities.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): techniques: interferometric - techniques: spectroscopic - stars: abundances - stars: atmospheres - stars: chemically peculiar - stars: fundamental parameters

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 26

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2019MNRAS.488.2343R and select 'bookmark this link' or equivalent in the popup menu


2021.03.03-10:04:49

© Université de Strasbourg/CNRS

    • Contact