Deep Chandra observations of PLCKG287.0+32.9: A clear detection of a shock front in a heated former cool core

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Volume 697 (May 2025)

A&A, 697 (2025) A72

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Table B.1.

Results of the spectral fit to an absorbed apec model (tbabs*apec) performed in the [0.5-7.0] keV energy band in concentric annular regions extracted up to R₅₀₀.

R_in - R_out	R_in - R_out	Exposure	Net counts (% total)	kT	Z	χ²/dof (χ_red²)
(″)	(kpc)	(ksec)		(keV)	(Z_⊙)
0-20	0-105	131.9	4333 (97.7)	$19 . 58_{- 2.32}^{+ 2.81}$ $19.58_{-2.32}^{+2.81}$	$0 . 62_{- 0.29}^{+ 0.31}$ $0.62_{-0.29}^{+0.31}$	139.00/134 (1.04)
20-30	105-157	131.9	4612 (97.4)	$15 . 71_{- 1.78}^{+ 2.05}$ $15.71_{-1.78}^{+2.05}$	$0 . 64_{- 0.23}^{+ 0.23}$ $0.64_{-0.23}^{+0.23}$	138.93/140 (0.99)
30-38	157-199	131.9	4039 (96.8)	$11 . 90_{- 1.23}^{+ 1.67}$ $11.90_{-1.23}^{+1.67}$	$0 . 34_{- 0.19}^{+ 0.17}$ $0.34_{-0.19}^{+0.17}$	145.12/128 (1.13)
38-45	199-235	131.9	3705 (96.2)	$12 . 94_{- 0.97}^{+ 2.51}$ $12.94_{-0.97}^{+2.51}$	$0 . 48_{- 0.21}^{+ 0.20}$ $0.48_{-0.21}^{+0.20}$	111.63/117 (0.95)
45-52	235-272	131.9	3402 (95.2)	$11 . 72_{- 1.02}^{+ 0.74}$ $11.72_{-1.02}^{+0.74}$	$0 . 32_{- 0.18}^{+ 0.18}$ $0.32_{-0.18}^{+0.18}$	98.36/108 (0.91)
52-59	272-309	131.9	3276 (94.5)	$14 . 12_{- 2.05}^{+ 1.67}$ $14.12_{-2.05}^{+1.67}$	< 0.21	131.24/106 (1.24)
59-67	309-350	131.9	3373 (93.3)	$13 . 96_{- 2.07}^{+ 1.80}$ $13.96_{-2.07}^{+1.80}$	< 0.19	118.59/110 (1.08)
67-76	350-398	131.9	3308 (91.4)	$14 . 33_{- 2.01}^{+ 1.85}$ $14.33_{-2.01}^{+1.85}$	$0 . 42_{- 0.23}^{+ 0.24}$ $0.42_{-0.23}^{+0.24}$	108.91/113 (0.96)
76-87	398-455	131.9	3489 (89.0)	$11 . 95_{- 1.12}^{+ 1.73}$ $11.95_{-1.12}^{+1.73}$	$0 . 45_{- 0.20}^{+ 0.21}$ $0.45_{-0.20}^{+0.21}$	109.89/122 (0.90)
87-100	455-523	175.1	4122 (87.6)	$14 . 47_{- 2.22}^{+ 2.32}$ $14.47_{-2.22}^{+2.32}$	$0 . 37_{- 0.23}^{+ 0.22}$ $0.37_{-0.23}^{+0.22}$	144.75/143 (1.01)
100-115	523-602	193.9	4165 (84.5)	$14 . 97_{- 2.50}^{+ 2.94}$ $14.97_{-2.50}^{+2.94}$	$0 . 37_{- 0.27}^{+ 0.24}$ $0.37_{-0.27}^{+0.24}$	157.42/150 (1.05)
115-135	602-706	244.3	4698 (80.2)	$12 . 56_{- 1.25}^{+ 1.65}$ $12.56_{-1.25}^{+1.65}$	$0 . 31_{- 0.19}^{+ 0.19}$ $0.31_{-0.19}^{+0.19}$	167.54/170 (0.99)
135-160	706-837	350.7	5067 (73.1)	$12 . 85_{- 1.26}^{+ 1.90}$ $12.85_{-1.26}^{+1.90}$	< 0.17	201.42/194 (1.04)
160-191.2	837-1000	350.7	4556 (61.5)	$10 . 05_{- 1.04}^{+ 1.17}$ $10.05_{-1.04}^{+1.17}$	$0 . 15_{- 0.15}^{+ 0.17}$ $0.15_{-0.15}^{+0.17}$	216.94/206 (1.05)
191.2-294.7	1000-1541	350.7	7289 (39.1)	$9 . 40_{- 1.02}^{+ 1.06}$ $9.40_{-1.02}^{+1.06}$	< 0.15	400.60/385 (1.04)

Notes. The temperature (in kiloelectron volts) and metallicity (as a fraction of the solar value, Asplund et al. 2009) were left as free parameters. The absorbing column density was fixed at the Galactic value N_H = 6.93 × 10²⁰ cm⁻² (HI4PI Collaboration 2016) and linked among the different annuli. Column 1: inner and outer radius in arcsec; column 2: inner and outer radius in kiloparsecs ; column 3: combined exposure time; column 4: net counts (and percentage of total counts); column 5: temperature (kiloelectron volts); column 6: abundance (solar fraction); column 7: χ²/dof. The global fit gives χ²/dof= 2390.3/2326 = 1.028.

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