Eclipsing binaries as a test for synthetic photometry

Autor(en)

Ulrike Heiter, Barry Smalley, Christian Stütz, Friedrich Kupka, Oleg Kochukhov

Abstrakt

Narrow band photometry is a viable tool to characterize large numbers of stars. The connection between observed colors and astrophysical parameters has to rely on synthetic photometry calculated from stellar atmosphere models. Here, we present synthetic Hbeta indices calculated from 1D model atmospheres, which implement various treatments of convection. The calculated indices are transformed to the standard system using observed medium-resolution spectra from recently published stellar libraries. We test how well the synthetic photometry reproduces observed indices by using a number of eclipsing binary systems. For these stars, atmospheric parameters can be determined independently from the models with highest possible accuracy. As a preliminary conclusion, the computed indices deviate from the observed ones by an amount expected from the observational errors and the accuracy of the atmospheric parameters.

Organisation(en)

Institut für Astrophysik

Externe Organisation(en)

Uppsala University, Keele University, Max-Planck-Institut für Astrophysik

Seiten

169-171

DOI

https://doi.org/10.1017/S1743921307000373

Publikationsdatum

2007

ÖFOS 2012

1010 Mathematik, 1030 Physik, Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/d12ab3f2-7371-4853-b390-f389845d6d65