The pre-main-sequence stars and initial mass function of NGC 2264

Byeong Gon Park*, Hwankyung Sung, Michael S. Bessell, Yong Hee Kang

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    77 Citations (Scopus)

    Abstract

    UBVRI and Hα CCD photometry has been performed in the southern region of NGC 2264 around the Cone Nebula. A nearly complete list of pre-main-sequence (PMS) members in the cluster has been made from the compilation of Hα emission stars identified in this study plus those selected in previous investigations, together with stars with X-ray emission. Using the H-R diagram, we tested a set of four PMS evolution models based on the PMS age and age spread estimate for the cluster and the mass-age relationship among individual stars. The resultant initial mass function (IMF) is in good agreement with the field star IMF of the solar neighborhood, with an IMF slope Γ = -1.7 in the mass range 0.3 ≤ log m ≤ 0.8.

    Original languageEnglish
    Pages (from-to)894-908
    Number of pages15
    JournalAstronomical Journal
    Volume120
    Issue number2
    DOIs
    Publication statusPublished - Aug 2000

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