The dashed line roughly indicates the extent of the lamda Ori ring of clouds. P. The Large System of Molecular Clouds in Orion and Monoceros. The image shows how most nebulae seem to be being blown away from Sigma Orionis. Ramesh believes Epsilon Orionis is the star inducing the star formation. Surface distribution of objects in Table 1.
Ticks indicate the directions of their tails.
Remnant Molecular Clouds in the Ori OB 1 Association. The HIC objects have five digit number corresponding to the catalogue number while the TYC objects are arbitrarily numbered. The TYC has larger errors than the HIC, and as of now, this is just a temporary, rough visual of the motions of the objects. It is not known which are foreground, background and NGC1788 region objects. It could be that the cloud is disintegrating.