2026-04-06T11:17:13Zivo://CDS.VizieR/J/AJ/135/6932025-06-13T15:25:00ZJ.AJIVOAX-ray and IR sources in RCW 108We report on the results of an approximately 90ks Chandra observation of a complex region that hosts multiple sites of recent and active star formation in ARA OB1a. The field is centered on the embedded cluster RCW 108-IR and includes a large portion of the open cluster NGC 6193. We detect over 420 X-ray sources in the field and combined these data with deep near-IR, Spitzer/IRAC and Midcourse Space Experiment (MSX) mid-IR data. We find about 360 of the X-ray sources have near-IR counterparts. We divide the region into five parts based on the X-ray point source characteristics and extended 8um emission. The most clearly defined regions are the central region, identified by embedded sources with high luminosities in both the near-IR and X-ray as well as high X-ray temperatures (~3keV), and the eastern region, identified by low extinction and ~1keV X-ray temperatures. The cluster members range in X-ray luminosity from 10^29^ to 10^33^erg/s. Over 18% of the cluster members with over 100 counts exhibit flares. All sources with over 350 counts are variable. Overall about 10% (16% in RCW 108-IR) appear to have optically thick disks as derived from their position in the (J-H), (H-K) diagram. The disk fraction becomes much higher when IRAC data are employed. We fit the bulk of the X-ray spectra as absorbed Raymond-Smith-type plasmas, and find that the column to the RCW 108-IR members varies from 10^21^ to 10^23^cm^-2^. We find that the field contains 41 candidate O or B stars, and estimate that the total number of pre-main-sequence stars in the field is about 1600+/-200.h-ii-regionsinfrared-photometryx-ray-sourcescosmologyobservational-astronomyinterstellar-mediumhttps://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/AJ/135/693http://doi.org/10.26093/cds/vizier.51350693https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/135/6932008AJ....135..693Whttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/135/693Cone search capability for table J/AJ/135/693/sources (Bright (X-ray sources in RCW 108 field)Cone search capability for table J/AJ/135/693/table10 (Near-IR observations of X-ray sources)Wolk S.J.Spitzbart B.D.Bourke T.L.Gutermuth R.A.Vigil M.,Comeron F.CDS2010https://cds.unistra.fr/vizier-org/licences_vizier.htmlCDS support team <cds-question@unistra.fr>DatasetAstroObjectsastronomy