Searching for Clustering of Low Mass Pre-main Sequence Stars in the Orion OB1b Sub-Association

Details Searching for Clustering of Low Mass Pre-main Sequence Stars in the Orion OB1b Sub-Association Searching for Clustering of Low Mass Pre-main Sequence Stars in the Orion OB1b Sub-Association

May 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...194.6814s&link_type=abstract

American Astronomical Society, 194th AAS Meeting, #68.14; Bulletin of the American Astronomical Society, Vol. 31, p.933

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We report on a project to map the spatial distribution of low mass pre-main sequence (PMS) stars around and between the stars of Orion's belt. We have UBVRI observations of ~ 3 deg(2) around and between the 3 O and B stars of Orion's belt, zeta , epsilon , and delta Orionis and sigma Orionis. We have found a well defined PMS locus in the color-magnitude diagram around each star. This allows us to select likely PMS stars photometrically. We discuss the spatial distribution of the PMS stars. We also present color-magnitude diagrams of the low mass stars in regions close to each of the O and B stars, and from selected regions between the massive stars. We will discuss the ages of PMS stars in each region.

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