Spectroscopic survey of emission-line stars - I. B[e] stars

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F16%3A00461656" target="_blank" >RIV/67985815:_____/16:00461656 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1093/mnras/stv2758" target="_blank" >http://dx.doi.org/10.1093/mnras/stv2758</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/mnras/stv2758" target="_blank" >10.1093/mnras/stv2758</a>

Result language

angličtina

Original language name

Spectroscopic survey of emission-line stars - I. B[e] stars

Original language description

Here, we focus on a sample of nine B[e] stars in different evolutionary phases. Emission of the [OI] lines is one of the characteristics of B[e] stars. We find that four of the objects display [Ca II] line emission: for the B[e] supergiants V1478 Cyg and 3 Pup, the kinematics obtained from the [O I] and [Ca II] line profiles agrees with a Keplerian rotating disc scenario; the forbidden lines of the compact planetary nebula OY Gem display no kinematical broadening beyond spectral resolution; the luminous blue variable candidate V1429 Aql shows no [O I] lines, but the profile of its [Ca II] lines suggests that the emission originates in its hot, ionized circumbinary disc. As none of the B[e] stars of lower mass displays [Ca II] line emission, we conclude that these lines are more likely observable in massive stars with dense discs, supporting and strengthening the suggestion that their appearance requires high-density environments.

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

<a href="/en/project/GA14-21373S" target="_blank" >GA14-21373S: Unveiling the mass-loss history of evolved massive stars</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

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

Name of the periodical

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

e-ISSN

—

Volume of the periodical

456

Issue of the periodical within the volume

2

Country of publishing house

GB - UNITED KINGDOM

Number of pages

14

Pages from-to

1424-1437

UT code for WoS article

000372264200020

EID of the result in the Scopus database

2-s2.0-84960830789