2023ApJ...944..231P


Query : 2023ApJ...944..231P

2023ApJ...944..231P - Astrophys. J., 944, 231 (2023/February-3)

X3: A High-mass Young Stellar Object Close to the Supermassive Black Hole Sgr A*.

PEISSKER F., ZAJACEK M., SABHA N.B., TSUBOI M., MOULTAKA J., LABADIE L., ECKART A., KARAS V., STEINIGER L., SUBROWEIT M., SURESH A., MELAMED M. and CLENET Y.

Abstract (from CDS):

To date, the proposed observation of young stellar objects (YSOs) in the Galactic center still raises the question of where and how these objects could have formed due to the violent vicinity of Sgr A*. Here, we report the multiwavelength detection of a highly dynamic YSO close to Sgr A* that might be a member of the IRS 13 cluster. We observe the beforehand known coreless bow-shock source X3 in the near- and mid-infrared (NIR/MIR) with SINFONI (VLT), NACO (VLT), ISAAC (VLT), VISIR (VLT), SHARP (NTT), and NIRCAM2 (KECK). In the radio domain, we use CO continuum and H30α ALMA observations to identify system components at different temperatures and locations concerning the central stellar source. It is suggested that these radio/submillimeter observations in combination with the NIR Brγ line can be associated with a protoplanetary disk of the YSO, which is consistent with manifold VISIR observations that reveal complex molecules and elements such as PAH, S IV, Ne II, and Ar III in a dense and compact region. Based on the photometric multiwavelength analysis, we infer the mass of ${15}_{-5}^{+10}{M}_{\odot }$ for the YSO with a related age of a few 104 yr. Due to this age estimate and the required relaxation timescales for high-mass stars, this finding is an indication of ongoing star formation in the inner parsec. The proper motion and 3D distance imply a relation between X3 and IRS 13. We argue that IRS 13 may serve as a birthplace for young stars that are ejected due to the evaporation of the cluster.

Abstract Copyright: © 2023. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Galactic center - Young stellar objects - Massive stars - Star formation - Young massive clusters - Stellar bow shocks - Supermassive black holes

Simbad objects: 27

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Number of rows : 27
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026
#notes
1 NGC 3372 HII 10 45 02.23 -59 41 59.8           ~ 1071 2
2 * zet Oph Be* 16 37 09.5400587698 -10 34 01.509742704 1.73 2.58 2.56 2.46 2.50 O9.2IVnn 1908 0
3 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
4 GCIRS 13E Cl* 17 45 39.73 -29 00 29.7           WN9 133 0
5 GCIRS 13 Em* 17 45 39.76 -29 00 29.8           ~ 144 0
6 GCIRS 2L * 17 45 39.778 -29 00 32.11           ~ 30 0
7 GCIRS 13E4 WR* 17 45 39.7974 -29 00 29.503           WC9 37 0
8 GCIRS 3 * 17 45 39.80 -29 00 23.9           ~ 154 0
9 GCIRS 13E2 WR* 17 45 39.8006 -29 00 29.819           WN8 50 0
10 GCIRS 13E3 ** 17 45 39.8038 -29 00 29.627           ~ 39 1
11 GCIRS 13E1 s*b 17 45 39.8166 -29 00 29.730           B0/1I 39 0
12 [GKM98] S3-374 * 17 45 39.8260 -29 00 31.013           ~ 11 0
13 [MES2007] X3 flt 17 45 39.8478 -29 00 30.445           ~ 27 0
14 [RGH2007] GEN-0.90-1.46 * 17 45 39.9717 -29 00 29.570           K-M 15 0
15 GCIRS 7 LP* 17 45 39.987 -29 00 22.24           M2 388 0
16 [MES2007] X7 flt 17 45 40.00 -29 00 28.6           ~ 29 0
17 GCIRS 16 Cl* 17 45 40.0 -29 00 28           ~ 387 0
18 NAME Galactic Circumnuclear Disk PoG 17 45 40.0 -29 00 28           ~ 187 0
19 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 4970 3
20 NAME G2 Dust Cloud IR 17 45 40.04 -29 00 28.1           ~ 209 0
21 [EG97] S2 * 17 45 40.0442 -29 00 27.975           B0/2V 420 1
22 [GKM98] S3-373 * 17 45 40.171 -29 00 24.65           ~ 2 0
23 GCIRS 16NE WR* 17 45 40.26 -29 00 27.2           Ofpe/WN9 156 0
24 EM* MWC 297 Ae* 18 27 39.5265500160 -03 49 52.133050776 15.57 14.34 12.31 11.34   B1.5Ve 315 0
25 GAL 028.20-00.04 HII 18 42 58.08 -04 14 04.6           ~ 61 0
26 [CCM2020] G6 flt ~ ~           ~ 12 0
27 [GKM98] S3-375 * ~ ~           ~ 1 0

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