| KRTIČKA, Jiří, L. HUANG, T. LUFTINGER, Zdeněk MIKULÁŠEK, E. NIEMCZURA, Milan PRVÁK, J. SILVESTER, G. WADE a Juraj ZVERKO. Testing Opacities Using the SED Variability of Chemically Peculiar Stars. In Mendoza, C TurckChieze, S Colgan, J. WORKSHOP ON ASTROPHYSICAL OPACITIES. SAN FRANCISCO: ASTRONOMICAL SOC PACIFIC, 2018, s. 195-200. ISBN 978-1-58381-914-2. |
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@inproceedings{1480412,
author = {Krtička, Jiří and Huang, L. and Luftinger, T. and Mikulášek, Zdeněk and Niemczura, E. and Prvák, Milan and Silvester, J. and Wade, G. and Zverko, Juraj},
address = {SAN FRANCISCO},
booktitle = {WORKSHOP ON ASTROPHYSICAL OPACITIES},
editor = {Mendoza, C TurckChieze, S Colgan, J},
keywords = {chemically peculiar stars; variable stars; opacity; stellar atmospheres},
howpublished = {tištěná verze "print"},
language = {eng},
location = {SAN FRANCISCO},
isbn = {978-1-58381-914-2},
pages = {195-200},
publisher = {ASTRONOMICAL SOC PACIFIC},
title = {Testing Opacities Using the SED Variability of Chemically Peculiar Stars},
url = {http://adsabs.harvard.edu/abs/2018ASPC..515..195K},
year = {2018}
}
TY - JOUR
ID - 1480412
AU - Krtička, Jiří - Huang, L. - Luftinger, T. - Mikulášek, Zdeněk - Niemczura, E. - Prvák, Milan - Silvester, J. - Wade, G. - Zverko, Juraj
PY - 2018
TI - Testing Opacities Using the SED Variability of Chemically Peculiar Stars
PB - ASTRONOMICAL SOC PACIFIC
CY - SAN FRANCISCO
SN - 9781583819142
KW - chemically peculiar stars
KW - variable stars
KW - opacity
KW - stellar atmospheres
UR - http://adsabs.harvard.edu/abs/2018ASPC..515..195K
N2 - Opacity variations across stellar surfaces are the key process producing the spectral energy distribution (SED) variability in chemically peculiar (CP) stars. The opacity variations are caused by the presence of surface spots with enhanced (or depleted) abundances of chemical elements. Simulations of the SED variability of chemically peculiar stars with abundances derived from Doppler mapping provide a detailed test of the continuum (bound free) and line opacities in the model atmospheres. The effect of opacities on the SED is most pronounced in the ultraviolet region. We simulate the ultraviolet and visual SED variability of selected chemically peculiar stars using model atmospheres calculated for actual surface abundances, and compare the predicted SEDs with observational results. We show that the simulations can reliably predict the observed SED and its variability as long as complete bound free and bound bound opacities are used. Therefore, the variability of chemically peculiar stars may serve as a test of opacities included in model atmospheres.
ER -
KRTIČKA, Jiří, L. HUANG, T. LUFTINGER, Zdeněk MIKULÁŠEK, E. NIEMCZURA, Milan PRVÁK, J. SILVESTER, G. WADE a Juraj ZVERKO. Testing Opacities Using the SED Variability of Chemically Peculiar Stars. In Mendoza, C TurckChieze, S Colgan, J. \textit{WORKSHOP ON ASTROPHYSICAL OPACITIES}. SAN FRANCISCO: ASTRONOMICAL SOC PACIFIC, 2018, s.~195-200. ISBN~978-1-58381-914-2.
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