2018/06/16 by Virginie Montes, P. Höfner, Montes, Virginie A. +5 · 1 citation
Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics and Star Formation Studies #Astrophysics of Galaxies (astro-ph.GA) #FOS: Physical sciences #Solar and Stellar Astrophysics (astro-ph.SR) #Stellar, planetary, and galactic studies
paper · pdf · doi:10.48550/arxiv.1806.06293
openalex publication_date 2018/06/16 · openalex created_date 2022/10/01 · openalex updated_date 2026/07/28
We present the results from Chandra X-ray observations, and near- and\nmid-infrared analysis, using VISTA/VVV and Spitzer/GLIMPSE catalogs, of the\nhigh-mass star-forming region IRAS 16562-3959, which contains a candidate for a\nhigh mass protostar. We detected 249 X-ray sources within the ACIS-I\nfield-of-view. The majority of the X-ray sources have low count rates (< 0.638\ncts/ks), and hard X-ray spectra. The search for YSOs in the region using\nVISTA/VVV and Spitzer/GLIMPSE catalogs resulted in a total of 799 YSOs, with 66\nClass I and 733 Class II YSOs. The search for near- and mid-infrared\ncounterparts of the X-ray sources led to a total of 165 VISTA/VVV counterparts,\nand a total of 151 Spitzer/GLIMPSE counterparts. The infrared analysis of the\nX-ray counterparts allowed us to add an extra 123 YSOs associated with the\nregion. We conclude that a total of 922 YSOs are associated with the region,\nwith 67 Class I, 764 Class II, and 91 Class III YSOs. We also found that the\nregion is composed of 11 subclusters. In the vicinity of the high-mass\nprotostar, the stellar distribution has a core-halo structure. The subcluster\ncontaining the high-mass protostar is the densest and the youngest in the\nregion, and the high-mass protostar is located at its center. The YSOs in this\ncluster appear to be substantially older than the high mass protostar.\n