VizieR Online Data Catalog: Astrometry & photometry for CMa R1 members (Gregorio-Hetem+, 2021)

Optical imaging in a wide (1.4x1.4°) field-of-view (FoV), covering the Canis Major (CMa) R1 region was performed in 2017 January 17, with the 0.8m telescope T80-South (hereafter T80S) located at Cerro Tololo (Chile), using five broadband SDSS filters (u', g', r', i', z') and seven narrow-band filters centered on features particularly interesting for our study, like CaII H+K (λ=3968.5Å, 3933.7Å), Hα (λ=6562.8Å), and CaII infrared triplets (IRT, {lamda}=8498, 8542, 8662Å), among others.

We previously analyzed the X-ray sources detected by the ROSAT and XMM-Newton satellites in the direction of the nebula Sh 2-296. The characterization of the X-ray sources was based on 2MASS data of their near-infrared counterparts for which mass and age were estimated. For a small part (12%) of the area where the X-ray sources are found, Fernandes+, 2015MNRAS.448...19F obtained medium-resolution optical spectra with GMOS (multi-object spectroscopy) at the Gemini telescopes.

(6 data files).