The formation of blue stragglers

This illustration demonstrates the two ways that blue stragglers in star clusters form. 

The illustration on the left shows the collision model where two low-mass stars in an overcrowded environment experience a head-on collision, combining their fuel and mass to form a single hot star. 

The illustration on the right depicts the "vampire" model consisting of a pair of stars that undergo a transformation, with the lower-mass star draining its larger-mass companion of the hydrogen that fuels its rebirth.

Credit:

ESA/Hubble, M. Kornmesser

About the Image

Id:heic1915c
Type:Artwork
Release date:9 September 2019, 17:00
Related releases:heic1915
Size:7310 x 3109 px

About the Object

Type:Unspecified : Star : Grouping : Cluster
Category:Star Clusters
Stars

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