STELLAR FORMATION IN NGC 2366: SEARCHING FOR CLUSTERS AND ASSOCIATIONS USING UNSUPERVISED ALGORITHMS

C. FEINSTEIN; M.M. VERGNE; G. BAUME; M.J. RODRÍGUEZ

La Plata

Congreso; IX La Plata International School (LAPIS) on Astronomy and Geophysics S-PLUS: The Universe in True Colors; 2020

FCAG (UNLP)

Using the amazing resolution power of the Hubble Space Telescope (HST), weinvestigated the characteristics of the young stellar population in the spiral galaxy NGC 2366. In particular, we focused our attention on its hierarchical clustering distributions and the properties of the groups. As this galaxy shows a prominent He blue sequence, we analyzed these populations and used them to show the spatial distribution of the stellar formation over time. The galaxy was observed in two bands by the HST covering almost the central and intermediate parts of NGC 2366 which includes all the major star formation regions. HST data allowed us to select the blue and young stars and therefore select the young population. Then, through the path linkage criterion (PLC), we found 487 young star groups and estimated their fundamental parameters, such as their stellar densities, sizes, number of members, and luminosity function (LF) slopes. We also performed a fractal analysis to determine the clustering properties of this population. We built a stellar density map and dendrograms corresponding to the galactic young population to detect large structures and depict their main characteristics