HR 6819 is a binary system with no black hole Revisiting the source with infrared interferometry and optical integral field spectroscopy
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F22%3A00555907" target="_blank" >RIV/67985815:_____/22:00555907 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1051/0004-6361/202143004" target="_blank" >https://doi.org/10.1051/0004-6361/202143004</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/0004-6361/202143004" target="_blank" >10.1051/0004-6361/202143004</a>
Alternative languages
Result language
angličtina
Original language name
HR 6819 is a binary system with no black hole Revisiting the source with infrared interferometry and optical integral field spectroscopy
Original language description
We aim to distinguish between the two scenarios for HR 6819. Both models predict two luminous stars but with very different angular separations and orbital motions. Therefore, the presence of bright sources in the 1−100 milliarcsec (mas) regime is a key diagnostic for determining the nature of the HR 6819 system. We obtained new high-angular resolution data with VLT/MUSE and VLTI/GRAVITY of HR 6819. The MUSE data are sensitive to bright companions at large scales, whilst the interferometric GRAVITY data are sensitive down to separations on mas scales and large magnitude differences. The MUSE observations reveal no bright companion at large separations and the GRAVITY observations indicate the presence of a stellar companion at an angular separation of ∼1.2 mas that moves on the plane of the sky over a timescale compatible with the known spectroscopic 40-day period.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Astronomy & Astrophysics
ISSN
0004-6361
e-ISSN
1432-0746
Volume of the periodical
659
Issue of the periodical within the volume
March
Country of publishing house
FR - FRANCE
Number of pages
12
Pages from-to
L3
UT code for WoS article
000763012500008
EID of the result in the Scopus database
2-s2.0-85126130901