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Table 1

Maximum likelihood and Bayesian Information Criteria (BIC) of single- and double-Gaussian models of the LOSVD in the respective PN-samples.

Sample NGauss Nfit BIC
Faint 1 2 −1352 2714
Faint 2 5 −1258 2543
Bright-north 1 2 −834 1678
Bright-north 2 5 −835 1694
Bright-south 1 2 −1009 2028
Bright-south 2 2 −1005 2020

Notes.NGauss denotes the number of Gaussians and Nfit the number of fitted parameters.

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