Intracluster globular clusters as tracers of the mass assembly of the Hydra I galaxy cluster

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Volume 708 (April 2026)

A&A, 708 (2026) A80

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Table 1.

Peak of spatial distributions with respect to NGC 3311.

	X (kpc)	Y (kpc)
NGC 3311	0.00	0.00
NGC 3311–NGC 3309 midpoint	−11.90	4.02
bGCs	$1 . 02_{- 1.08}^{+ 1.08}$ $Mathematical equation: $ 1.02_{-1.08}^{+1.08} $$	$3 . 66_{- 1.18}^{+ 1.19}$ $Mathematical equation: $ 3.66_{-1.18}^{+1.19} $$
rGCs	$- 0 . 75_{- 0.88}^{+ 0.88}$ $Mathematical equation: $ -0.75_{-0.88}^{+0.88} $$	$1 . 03_{- 0.58}^{+ 0.59}$ $Mathematical equation: $ 1.03_{-0.58}^{+0.59} $$
Extreme bGCs	$1 . 38_{- 3.94}^{+ 9.71}$ $Mathematical equation: $ 1.38_{-3.94}^{+9.71} $$	$10 . 34_{- 3.99}^{+ 6.84}$ $Mathematical equation: $ 10.34_{-3.99}^{+6.84} $$
Extreme rGCs	$- 0 . 42_{- 1.90}^{+ 1.91}$ $Mathematical equation: $ -0.42_{-1.90}^{+1.91} $$	$1 . 86_{- 1.22}^{+ 1.15}$ $Mathematical equation: $ 1.86_{-1.22}^{+1.15} $$
Extended envelope	$3 . 97_{- 0.36}^{+ 0.36}$ $Mathematical equation: $ 3.97_{-0.36}^{+0.36} $$	$6 . 67_{- 0.45}^{+ 0.45}$ $Mathematical equation: $ 6.67_{-0.45}^{+0.45} $$
X-ray secondary peak	4.87	3.49

Notes. Values for GCs were obtained from a Gaussian KDE model, the extended envelope centre was taken from Barbosa et al. (2018) and adjusted to our distance modulus, and the X-ray peak was obtained visually from the contours. The confidence intervals correspond to the 16th and 84th percentiles estimated from bootstrapping with 10000 resamples. X and Y values increase to the north and east, respectively.

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