Time-dependent spectral-feature variations of stars displaying the B[e] phenomenon

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10129571" target="_blank" >RIV/00216208:11320/12:10129571 - isvavai.cz</a>

Alternative codes found

RIV/67985815:_____/12:00388462 RIV/67985815:_____/13:00421152 RIV/00216208:11320/13:10173968 RIV/00216224:14310/13:00107092

Result on the web

<a href="http://dx.doi.org/10.1051/0004-6361/201117210" target="_blank" >http://dx.doi.org/10.1051/0004-6361/201117210</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/201117210" target="_blank" >10.1051/0004-6361/201117210</a>

Result language

angličtina

Original language name

Time-dependent spectral-feature variations of stars displaying the B[e] phenomenon

Original language description

We present results of nearly six years of spectroscopic observations of the B[e] star V2028 Cyg. The presence of the cold-type absorption lines combined with a hot-type spectrum indicate the binarity of this object. Since B[e] stars are embedded in an extended envelope, the usage of common stellar atmosphere models for the analysis is quite inappropriate. Therefore, we focus on the analysis of the long-term spectral line variations in order to determine the nature of this object. We present the time dependences of the equivalent width and radial velocities of the Ha line, [O I] 6300 angstrom, Fe II 6427, 6433, and 6456 angstrom lines. The bisector variations and line intensities are shown for the Ha line. The radial velocities are also measured for theabsorption lines of the K component. No periodic variation is found. The observed data show correlations between the measured quantities, which can be used in future modelling.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BN - Astronomy and celestial mechanics, astrophysics

OECD FORD branch

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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)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2012

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Astronomy and Astrophysics

ISSN

0004-6361

e-ISSN

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Volume of the periodical

542

Issue of the periodical within the volume

červen

Country of publishing house

DE - GERMANY

Number of pages

6

Pages from-to

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UT code for WoS article

000305803300007

EID of the result in the Scopus database

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