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@article{2420817,
author = {Peissker, Florian and Zajaček, Michal and Labaj, Matúš and Thomkins, Lauritz and Elbe, Andreas and Eckart, Andreas and Labadie, Lucas and Karas, Vladimír and Sabha, Nadeen B. and Steiniger, Lukas and Melamed, Maria},
article_location = {Chicago},
article_number = {1},
doi = {http://dx.doi.org/10.3847/1538-4357/ad4098},
keywords = {Supermassive black holes; Galactic center; Young stellar objects; Young massive clusters; Intermediate-mass black holes},
language = {eng},
issn = {0004-637X},
journal = {Astrophysical Journal},
title = {The Evaporating Massive Embedded Stellar Cluster IRS 13 Close to Sgr A*. II. Kinematic Structure},
url = {https://ui.adsabs.harvard.edu/abs/2024ApJ...970...74P/abstract},
volume = {970},
year = {2024}
}
TY - JOUR
ID - 2420817
AU - Peissker, Florian - Zajaček, Michal - Labaj, Matúš - Thomkins, Lauritz - Elbe, Andreas - Eckart, Andreas - Labadie, Lucas - Karas, Vladimír - Sabha, Nadeen B. - Steiniger, Lukas - Melamed, Maria
PY - 2024
TI - The Evaporating Massive Embedded Stellar Cluster IRS 13 Close to Sgr A*. II. Kinematic Structure
JF - Astrophysical Journal
VL - 970
IS - 1
SP - 1-34
EP - 1-34
PB - IOP Publishing Ltd
SN - 0004637X
KW - Supermassive black holes
KW - Galactic center
KW - Young stellar objects
KW - Young massive clusters
KW - Intermediate-mass black holes
UR - https://ui.adsabs.harvard.edu/abs/2024ApJ...970...74P/abstract
N2 - The existence of two distinct and apparently unrelated populations of dusty stellar objects in the Nuclear Stellar Cluster of the Milky Way, namely IRS 13 and the S-cluster, are potentially prone to a general process describing the star formation history in the Galactic center (GC). The former cluster is thought to be entangled in the clockwise and counterclockwise disks, a large-scale stellar distribution revealed by the analysis of stars at different distances from Sgr A*, the supermassive black hole in the GC. Recently, this large-scale distribution was reported to exhibit a multidisk structure with at least four components. Motivated by this finding, we revisit the anisotropic IRS 13 cluster and find strong evidence for a disk-like structure. An examination of about 50 individual stellar orbits reveals a new structure that does not follow any trend known in the literature. Furthermore, we investigate the possibility of an inspiral cluster undergoing star formation processes, as proposed by several authors. Using a simplified N-body simulation to reproduce our observational results, we conclude that, under certain conditions, a massive cluster can migrate from the Circum Nuclear Disk toward the inner parsec. Based on this classification, we revisit the large-scale NACO Very Large Telescope (VLT) observations of IRS 13 and find evidence for a separation of the cluster into a gravitationally stable core remnant and a dissipating part. With the velocity-resolved H30α line and the broadband spectral energy distribution of IRS 13 E3, we provide tentative support for the existence of an intermediate-mass black hole of ∼3 × 104M⊙ surrounded by a hot gaseous stream.
ER -
PEISSKER, Florian, Michal ZAJAČEK, Matúš LABAJ, Lauritz THOMKINS, Andreas ELBE, Andreas ECKART, Lucas LABADIE, Vladimír KARAS, Nadeen B. SABHA, Lukas STEINIGER and Maria MELAMED. The Evaporating Massive Embedded Stellar Cluster IRS 13 Close to Sgr A*. II. Kinematic Structure. \textit{Astrophysical Journal}. Chicago: IOP Publishing Ltd, 2024, vol.~970, No~1, p.~1-34. ISSN~0004-637X. Available from: https://dx.doi.org/10.3847/1538-4357/ad4098.
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