Collinder 69

Number of stars per data source

	Reference  226 :   72 stars
	Reference  380 :  276 stars

References

 226
Dolan C.J., Mathieu R.D.
(1999) Astron. J. 118, 2409
A WIYN lithium survey for young stars in the lambda Orionis star-forming region
1999AJ....118.2409D
 380
Dolan C.J., Mathieu R.D.
(2001) Astron. J. 121, 2124
The spatial distribution of the lambda Orion pre-main-sequence population
2001AJ....121.2124D