Open Access

Table B.2.

Groups retrieved by the algorithm that correspond to a given spiral arm.

Arm Group p-value Nspiral Retrieved % retrieved
Norma [7, 6] 0.98 93 92 98.92
Sct-Cen [4, 5] 1.00 169 168 99.41
Sgr-Car [0] 1.00 167 167 100.00
Local [2] 1.00 158 158 100.00
Perseus [3] 1.00 550 550 100.00
Outer [1] 1.00 362 362 100.00

Notes. The number and percentage of retrieved stars compared to the original number Nspiral of mock stars in the spiral arm is provided, as well as the p-value testing the null hypothesis that the mock and retrieved spiral arms are identical using Hotelling’s t-Squared statistics.

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