Circumstellar Disk Candidates Identified in NGC 2264

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

Based on an optical and near-infrared study of a 45′x 45' field in NGC 2264, which includes both S Mon and the Cone Nebula, we identify circumstellar disk candidates using three techniques: excess ultraviolet (U-V) emission, excess near-IR (I-K and H-K) emission, and Hα emission line equivalent widths. We find generally good correlation between disk indicators thought to originate from different physical processes. We find little if any evolution of disk fraction with stellar age or mass.

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