The luminosity function in NGC 2023

Details The luminosity function in NGC 2023 The luminosity function in NGC 2023

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...356l..55d&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 356, June 20, 1990, p. L55-L58.

Astronomy and Astrophysics

Astrophysics

35

Pre-Main Sequence Stars, Reflection Nebulae, Star Clusters, Star Formation, Stellar Luminosity, Astronomical Photometry, Color-Color Diagram, Interstellar Extinction, Molecular Clouds, Near Infrared Radiation

Scientific paper

Sellgren (1983) has shown that the young stellar cluster within the molecular cloud associated with the reflection nebula NGC 2023 has a luminosity function consistent with the Salpeter IMF for stars brighter than K = 12 mag. Extrapolation predicts that approximately 50 additional stars brighter than K = 15 mag, arguably of spectral types G through K, should be present. However, images of the cluster using a sensitive two-dimensional IR array reveal no additional cluster members, which suggests that either no low-mass stars have formed or that they are still heavily shrouded in molecular 'cocoons' left over from the star formation process. A straightforward experimental resolution of the alternatives is proposed.

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