HD 152246: a new high-mass triple system and its basic properties

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10287024" target="_blank" >RIV/00216208:11320/14:10287024 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1051/0004-6361/201424382" target="_blank" >http://dx.doi.org/10.1051/0004-6361/201424382</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/201424382" target="_blank" >10.1051/0004-6361/201424382</a>

Result language

angličtina

Original language name

HD 152246: a new high-mass triple system and its basic properties

Original language description

Analyses of multi-epoch, high-resolution (R similar to 50 000) optical spectra of the O-type star HD 152246 (09 IV according to the most recent classification), complemented by a limited number of earlier published radial velocities, led to the finding that the object is a hierarchical triple system, where a close inner pair (Ba-Bb) with a slightly eccentric orbit (e = 0.11) and a period of 6.0049 revolves in a 470-day highly eccentric orbit (e = 0.865) with another massive and brighter component A. Themass ratio of the inner system must be low since we were unable to find any traces of the secondary spectrum. The mass ratio A/(Ba+Bb) is 0.89. The outer system has recently been resolved using long-baseline interferometry on three occasions. The interferometry confirms the spectroscopic results and specifies elements of the system. Our orbital solutions, including the combined radial-velocity and interferometric solution indicate an orbital inclination of the outer orbit of 112 and ste

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/GAP209%2F10%2F0715" target="_blank" >GAP209/10/0715: Accurate physical properties of hot stars based on binary and multiple star studies</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2014

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

568

Issue of the periodical within the volume

srpen

Country of publishing house

FR - FRANCE

Number of pages

9

Pages from-to

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UT code for WoS article

000341185900131

EID of the result in the Scopus database

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