Observation of S4716—a Star with a 4 yr Orbit around Sgr A*

J 2022

Observation of S4716—a Star with a 4 yr Orbit around Sgr A*

PEISSKER, Florian, Andreas ECKART, Michal ZAJAČEK a Silke BRITZEN

Základní údaje

Originální název

Observation of S4716—a Star with a 4 yr Orbit around Sgr A*

Autoři

PEISSKER, Florian (garant), Andreas ECKART, Michal ZAJAČEK (703 Slovensko, domácí) a Silke BRITZEN

Vydání

Astrophysical Journal, IOP Publishing Ltd, 2022, 0004-637X

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10308 Astronomy

Stát vydavatele

Velká Británie a Severní Irsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL URL

Impakt faktor

Impact factor: 4.900

Kód RIV

RIV/00216224:14310/22:00129241

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.3847/1538-4357/ac752f

UT WoS

000820844200001

Klíčová slova anglicky

Star clusters; Supermassive black holes; Stellar dynamics; Galactic center

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 6. 12. 2022 10:46, Mgr. Marie Šípková, DiS.

Anotace

V originále

The ongoing monitoring of the Galactic center and Sgr A*, the central supermassive black hole, produces surprising and unexpected findings. This goes hand in hand with the technical evolution of ground- and space-based telescopes and instruments, but also with the progression of image filter techniques such as the Lucy–Richardson algorithm. As we continue to trace the members of the S cluster close to Sgr A* on their expected trajectory around the supermassive black hole, we present the finding of a new stellar source, which we call S4716. The newly found star orbits Sgr A* in about 4.0 yr and can be detected with NIRC2 (Keck), OSIRIS (Keck), SINFONI (VLT), NACO (VLT), and GRAVITY (VLTI). With a periapse distance of about 100 au, S4716 shows an equivalent distance toward Sgr A* as S4711. These fast-moving stars undergo a similar dynamical evolution, since S4711–S4716 share comparable orbital properties. We will furthermore draw a connection between the recent finding of a new faint star called S300 and the data presented here. Additionally, we observed a blend-star event with S4716 and another newly identified S star S148 in 2017.

Návaznosti

GX21-13491X, projekt VaV

Název: Zkoumání žhavého vesmíru a porozumění kosmické zpětné vazbě (Akronym: EHU)

Investor: Grantová agentura ČR, Exploring the Hot Universe and Understanding Comic Feedback

Citovat

PEISSKER, Florian, Andreas ECKART, Michal ZAJAČEK a Silke BRITZEN. Observation of S4716—a Star with a 4 yr Orbit around Sgr A*. Astrophysical Journal. IOP Publishing Ltd, 2022, roč. 933, č. 1, s. 1-26. ISSN 0004-637X. Dostupné z: https://dx.doi.org/10.3847/1538-4357/ac752f.

@article{2237517,
   author = {Peissker, Florian and Eckart, Andreas and Zajaček, Michal and Britzen, Silke},
   article_number = {1},
   doi = {http://dx.doi.org/10.3847/1538-4357/ac752f},
   keywords = {Star clusters; Supermassive black holes; Stellar dynamics; Galactic center},
   language = {eng},
   issn = {0004-637X},
   journal = {Astrophysical Journal},
   title = {Observation of S4716—a Star with a 4 yr Orbit around Sgr A*},
   url = {https://iopscience.iop.org/article/10.3847/1538-4357/ac752f},
   volume = {933},
   year = {2022}
}

TY  - JOUR
ID  - 2237517
AU  - Peissker, Florian - Eckart, Andreas - Zajaček, Michal - Britzen, Silke
PY  - 2022
TI  - Observation of S4716—a Star with a 4 yr Orbit around Sgr A*
JF  - Astrophysical Journal
VL  - 933
IS  - 1
SP  - 1-26
EP  - 1-26
PB  - IOP Publishing Ltd
SN  - 0004637X
KW  - Star clusters
KW  - Supermassive black holes
KW  - Stellar dynamics
KW  - Galactic center
UR  - https://iopscience.iop.org/article/10.3847/1538-4357/ac752f
N2  - The ongoing monitoring of the Galactic center and Sgr A*, the central supermassive black hole, produces surprising and unexpected findings. This goes hand in hand with the technical evolution of ground- and space-based telescopes and instruments, but also with the progression of image filter techniques such as the Lucy–Richardson algorithm. As we continue to trace the members of the S cluster close to Sgr A* on their expected trajectory around the supermassive black hole, we present the finding of a new stellar source, which we call S4716. The newly found star orbits Sgr A* in about 4.0 yr and can be detected with NIRC2 (Keck), OSIRIS (Keck), SINFONI (VLT), NACO (VLT), and GRAVITY (VLTI). With a periapse distance of about 100 au, S4716 shows an equivalent distance toward Sgr A* as S4711. These fast-moving stars undergo a similar dynamical evolution, since S4711–S4716 share comparable orbital properties. We will furthermore draw a connection between the recent finding of a new faint star called S300 and the data presented here. Additionally, we observed a blend-star event with S4716 and another newly identified S star S148 in 2017.
ER  -

PEISSKER, Florian, Andreas ECKART, Michal ZAJAČEK a Silke BRITZEN. Observation of S4716—a Star with a 4 yr Orbit around Sgr A*. \textit{Astrophysical Journal}. IOP Publishing Ltd, 2022, roč.~933, č.~1, s.~1-26. ISSN~0004-637X. Dostupné z: https://dx.doi.org/10.3847/1538-4357/ac752f.

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