A Photometric Study of the Young Stellar Population throughout the λ Orionis Star-forming Region

  title={A Photometric Study of the Young Stellar Population throughout the $\lambda$ Orionis Star-forming Region},
  author={Christopher J. Dolan and Robert D. Mathieu},
  journal={The Astronomical Journal},
  pages={387 - 403}
We present VRI photometry of 320,917 stars with 11 ≲ R ≲ 18 throughout the λ Ori star-forming region. Using the more spatially limited spectroscopic surveys of Dolan & Mathieu to define the color-magnitude domain of young low-mass members of the association and removing statistically the field stars in this domain, we use our photometry to identify a representative pre–main-sequence (PMS) population throughout the interior of the molecular ring. The spatial distribution of this population shows… 

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