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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

  • Czech description

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

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

  • 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