Key points are not available for this paper at this time.
We report on the first phase of a study of the stellar population comprising the Orion Nebula Cluster (ONC). Approximately 50% of the ~ 3500 stars identified to date within ~ 2. 5 pc of the namesake Trapezium stars are optically visible, and in this paper we focus on that sample with I peak > 10 (4) pc (-3) ) of stars, the wide range in stellar mass (~ 0. 1-50 M_⊙), and the extreme youth (projected stars ~ 900 M_⊙ (probably a factor of < 2 underestimate). A lower limit to the recent star formation rate is ~ 10 (-4) M_⊙ yr (-1). All observational data in this study as well as stellar parameters derived from them are available in electronic format.
Lynne A. Hillenbrand (Thu,) studied this question.