Star Formation In Nearby Clouds (SFiNCs): X-ray And Infrared Source Catalogs And Membership

TL;DR

The SFiNCs project provides comprehensive X-ray and infrared catalogs of young stellar objects in 22 nearby star-forming regions, significantly expanding the known member populations for detailed star formation studies.

Contribution

This work offers the first homogeneous analysis and extensive catalogs of X-ray and infrared sources, identifying nearly 8500 probable young stellar members across multiple regions.

Findings

Catalogs include over 15,300 X-ray and 1,630,000 infrared sources.

Membership census increased by 6-200% per region.

Identified 8,500 probable young stellar members.

Abstract

The Star Formation in Nearby Clouds (SFiNCs) project is aimed at providing detailed study of the young stellar populations and star cluster formation in nearby 22 star forming regions (SFRs) for comparison with our earlier MYStIX survey of richer, more distant clusters. As a foundation for the SFiNCs science studies, here, homogeneous data analyses of the Chandra X-ray and Spitzer mid-infrared archival SFiNCs data are described, and the resulting catalogs of over 15300 X-ray and over 1630000 mid-infrared point sources are presented. On the basis of their X-ray/infrared properties and spatial distributions, nearly 8500 point sources have been identified as probable young stellar members of the SFiNCs regions. Compared to the existing X-ray/mid-infrared publications, the SFiNCs member list increases the census of YSO members by 6-200% for individual SFRs and by 40% for the merged sample of all 22 SFiNCs SFRs.