A binary system in the S cluster close to the supermassive
black hole Sagittarius A*

J 2024

A binary system in the S cluster close to the supermassive black hole Sagittarius A*

PEISSKER, Florian; Michal ZAJAČEK; Lucas LABADIE; Emma BORDIER; Andreas ECKART et al.

Základní údaje

Originální název

A binary system in the S cluster close to the supermassive black hole Sagittarius A*

Autoři

PEISSKER, Florian; Michal ZAJAČEK; Lucas LABADIE; Emma BORDIER; Andreas ECKART; Maria MELAMED a Vladimir KARAS

Vydání

Nature Communications, Berlin, Nature Research, 2024, 2041-1723

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Německo

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL, URL

Impakt faktor

Impact factor: 15.700

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/24:00139734

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

Stellar evolution; Transient astrophysical phenomena

Štítky

14312040, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 4. 2. 2025 16:36, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

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.

Návaznosti

GM24-10599M, projekt VaV

Název: Hvězdy v galaktických jádrech: vzájemný vztah s masivními černými dírami

Investor: Grantová agentura ČR, Hvězdy v galaktických jádrech: vzájemný vztah s masivními černými dírami

Citovat

PEISSKER, Florian; Michal ZAJAČEK; Lucas LABADIE; Emma BORDIER; Andreas ECKART; Maria MELAMED a Vladimir KARAS. A binary system in the S cluster close to the supermassive black hole Sagittarius A*. Nature Communications. Berlin: Nature Research, 2024, roč. 15, č. 1, s. 1-11. ISSN 2041-1723. Dostupné z: https://doi.org/10.1038/s41467-024-54748-3.

@article{2474700,
   author = {Peissker, Florian and Zajaček, Michal and Labadie, Lucas and Bordier, Emma and Eckart, Andreas and Melamed, Maria and Karas, Vladimir},
   article_location = {Berlin},
   article_number = {1},
   doi = {https://doi.org/10.1038/s41467-024-54748-3},
   keywords = {Stellar evolution; Transient astrophysical phenomena},
   language = {eng},
   issn = {2041-1723},
   journal = {Nature Communications},
   title = {A binary system in the S cluster close to the supermassive black hole Sagittarius A*},
   url = {https://ui.adsabs.harvard.edu/abs/2024NatCo..1510608P/abstract},
   volume = {15},
   year = {2024}
}

TY  - JOUR
ID  - 2474700
AU  - Peissker, Florian - Zajaček, Michal - Labadie, Lucas - Bordier, Emma - Eckart, Andreas - Melamed, Maria - Karas, Vladimir
PY  - 2024
TI  - A binary system in the S cluster close to the supermassive black hole Sagittarius A*
JF  - Nature Communications
VL  - 15
IS  - 1
SP  - 1-11
EP  - 1-11
PB  - Nature Research
SN  - 20411723
KW  - Stellar evolution
KW  - Transient astrophysical phenomena
UR  - https://ui.adsabs.harvard.edu/abs/2024NatCo..1510608P/abstract
N2  - 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.
ER  -

PEISSKER, Florian; Michal ZAJAČEK; Lucas LABADIE; Emma BORDIER; Andreas ECKART; Maria MELAMED a Vladimir KARAS. A binary system in the S cluster close to the supermassive black hole Sagittarius A*. \textit{Nature Communications}. Berlin: Nature Research, 2024, roč.~15, č.~1, s.~1-11. ISSN~2041-1723. Dostupné z: https://doi.org/10.1038/s41467-024-54748-3.

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