Young Stellar Objects in NGC 6823

B Riaz,Eduardo L Martin,Ramarao Tata,J L Monin,N Phanbao,H Bouy

Monthly Notices of the Royal Astronomical Society（2012）

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摘要

NGC 6823 is a young open cluster that lies at a distance of ∼2 kpc in the Vulpecula OB1 association. Previous studies using CCD photometry and spectroscopy have identified a Trapezium system of bright O- and B-type stars at its centre, along with several massive O-, B- and A-type stars in the cluster. We present optical VRI and near-infrared JHK photometric observations, complemented with Spitzer/...

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circumstellar matter,stars: low-mass,stars: pre-main-sequence,open clusters and associations: individual: NGC 6823

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