Chandra Cygnus OB2 Legacy Survey: X-ray Catalog

DOI

The Cygnus OB2 association is the largest concentration of young and massive stars within 2kpc of the Sun, including an estimated 65 O-type stars and hundreds of OB stars. The Chandra Cygnus OB2 Legacy Survey is a large imaging program undertaken with the Advanced CCD Imaging Spectrometer onboard the Chandra X-ray Observatory. The survey has imaged the central 0.5deg^2^ of the Cyg OB2 association with an effective exposure of 120ks and an outer 0.35 deg^2^ area with an exposure of 60ks. Here we describe the survey design and observations, the data reduction and source detection, and present a catalog of 8,000 X-ray point sources. The survey design employs a grid of 36 heavily (~50%) overlapping pointings, a method that overcomes Chandra's low off-axis sensitivity and produces a highly uniform exposure over the inner 0.5deg^2^. The full X-ray catalog is described here and is made available online.

Cone search capability for table J/ApJS/269/7/table2 (Chandra Cygnus OB2 Legacy Survey Catalog)

Identifier
DOI http://doi.org/10.26093/cds/vizier.22690007
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/ApJS/269/7
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/269/7
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/269/7
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/ApJS/269/7
Provenance
Creator Wright N.J.; Drake J.J.; Guarcello M.G.; Aldcroft T.L.; Kashyap V.L.,Damiani F.; DePasquale J.; Fruscione A.
Publisher CDS
Publication Year 2023
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Cosmology; Natural Sciences; Physics; Stellar Astronomy