Modelling of the ultraviolet and visual SED variability in the hot magnetic Ap star CU Virginis
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F12%3A00057077" target="_blank" >RIV/00216224:14310/12:00057077 - isvavai.cz</a>
Result on the web
<a href="http://adsabs.harvard.edu/abs/2012A%26A...537A..14K" target="_blank" >http://adsabs.harvard.edu/abs/2012A%26A...537A..14K</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/201117490" target="_blank" >10.1051/0004-6361/201117490</a>
Alternative languages
Result language
angličtina
Original language name
Modelling of the ultraviolet and visual SED variability in the hot magnetic Ap star CU Virginis
Original language description
Context. The spectral energy distribution (SED) in chemically peculiar stars may be significantly affected by their abundance anomalies. The observed SED variations are usually assumed to be a result of inhomogeneous surface distribution of chemical elements, flux redistribution and stellar rotation. However, the direct evidence for this is still only scarce. Aims: We aim to identify the processes that determine the SED and its variability in the UV and visual spectral domains of the helium-weak star CUVir. Methods: We used the TLUSTY model atmospheres calculated for the appropriate surface chemical composition to obtain the emergent flux and predict the rotationally modulated flux variability of the star. Results: We show that most of the light variations in the vby filters of the Strömgren photometric system are a result of the uneven surface distribution of silicon, chromium, and iron. Our models are only able to explain a part of the variability in the u filter, however.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BN - Astronomy and celestial mechanics, astrophysics
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astronomy and Astrophysics
ISSN
0004-6361
e-ISSN
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Volume of the periodical
537
Issue of the periodical within the volume
A14
Country of publishing house
FR - FRANCE
Number of pages
14
Pages from-to
"A14"-1,"A11"-14
UT code for WoS article
000300416800014
EID of the result in the Scopus database
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