Infrared images of the young cluster NGC 2264

Details Infrared images of the young cluster NGC 2264 Infrared images of the young cluster NGC 2264

May 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...408..471l&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 408, no. 2, p. 471-483.

Astronomy and Astrophysics

Astrophysics

85

Infrared Imagery, Infrared Stars, Open Clusters, Star Formation, Color-Color Diagram, Color-Magnitude Diagram, Disk Galaxies, Interstellar Extinction, Molecular Clouds, Radiant Flux Density

Scientific paper

Initial results of an extensive IR imaging survey of the young cluster NGC 2264 and a nearby galactic control field are presented. A large portion of the cluster was imaged in each of the three standard near-IR colors (J, H, and K) with an IR array camera. On the basis of a comparison of these observations, the size of the cluster population is estimated, and the nature of its members is investigated. The cluster is found to contain 360 +/- 130 members. The slope of the K luminosity function of the cluster is significantly steeper than that expected for a cluster of ZAMS stars, and appears to flatten out or turn over at an apparent K magnitude of roughly 13.0-14.0. An analysis of the JHK color-color diagrams of the cluster and control fields shows that approximately 170 sources observed toward the cluster have colors indicative of intrinsic excess IR emission.

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