1 INTRODUCTION

2 DATA

3 TRIPLET IDENTIFICATION

4 SPECTRAL ANALYSIS
4.1 Empirical Spectral Synthesis
4.2 Emission lines measures

5 GENERAL CONFIGURATION OF GALAXY TRIPLETS
5.1 The luminosity extent of triplets
5.2 The stellar mass assembly
5.3 The age - stellar mass relation

6 EMISSION LINES ANALYSIS
6.1 The WHAN diagram
6.2 The mass assembly of WHAN classes
6.3 The combination of WHAN classes according to triplet properties
6.4 Comparison with BPT diagram

7 SUMMARY AND CONCLUSIONS