A binary system in the S cluster close to the supermassive black hole Sagittarius A*
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F24%3A00603208" target="_blank" >RIV/67985815:_____/24:00603208 - isvavai.cz</a>
Alternative codes found
RIV/00216224:14310/24:00139734
Result on the web
<a href="https://hdl.handle.net/11104/0361033" target="_blank" >https://hdl.handle.net/11104/0361033</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1038/s41467-024-54748-3" target="_blank" >10.1038/s41467-024-54748-3</a>
Alternative languages
Result language
angličtina
Original language name
A binary system in the S cluster close to the supermassive black hole Sagittarius A*
Original language description
High-velocity stars and peculiar G objects orbit the central supermassive black hole (SMBH) Sagittarius A* (Sgr A*). Together, the G objects and high-velocity stars constitute the S cluster. In contrast with theoretical predictions, no binary system near Sgr A* has been identified. Here, we report the detection of a spectroscopic binary system in the S cluster with the masses of the components of 2.80 +/- 0.50 M-circle dot and 0.73 +/- 0.14 M-circle dot, assuming an edge-on configuration. Based on periodic changes in the radial velocity, we find an orbital period of 372 +/- 3 days for the two components. The binary system is stable against the disruption by Sgr A* due to the semi-major axis of the secondary being 1.59 +/- 0.01 AU, which is well below its tidal disruption radius of approximately 42.4 AU. The system, known as D9, shows similarities to the G objects. We estimate an age for D9 of 2.7(-0.3)(+1.9)x10(6) yr that is comparable to the timescale of the SMBH-induced von Zeipel-Lidov-Kozai cycle period of about 106 yr, causing the system to merge in the near future. Consequently, the population of G objects may consist of pre-merger binaries and post-merger products. The detection of D9 implies that binary systems in the S cluster have the potential to reside in the vicinity of the supermassive black hole Sgr A* for approximately 106 years.
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
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Nature Communications
ISSN
2041-1723
e-ISSN
2041-1723
Volume of the periodical
15
Issue of the periodical within the volume
1
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
10608
UT code for WoS article
001380143300003
EID of the result in the Scopus database
2-s2.0-85212440367