Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apjs...53..893a&link_type=abstract
Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 53, Dec. 1983, p. 893-936.
Astronomy and Astrophysics
Astrophysics
74
Main Sequence Stars, Star Clusters, Stellar Evolution, Stellar Spectrophotometry, Galactic Clusters, Open Clusters, Protostars, Star Formation Rate, Stellar Luminosity, Stellar Mass
Scientific paper
UBVRI H-alpha photographic photometry was obtained for a sample of low-mass stars in the young open cluster NGC 2264 in order to investigate the star-forming history of this region. A theoretical H-R diagram was constructed for the sample of probable cluster members. Isochrones and evolutionary tracks were adopted from Cohen and Kuhi (1979). Evidence for a significant age spread in the cluster was found amounting to over ten million yr. In addition, the derived star formation rate as a function of stellar mass suggests that the principal star-forming mass range in NGC 2264 has proceeded sequentially in time from the lowest to the highest masses. The low-mass cluster stars were the first cluster members to form in significant numbers, although their present birth rate is much lower now than it was about ten million yr ago. The star-formation rate has risen to a peak at successively higher masses and then declined.
Adams Terrence M.
Strom Karen M.
Strom Stephen E.
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