Primordial Binary Evolution and Blue Stragglers

TL;DR

This paper reviews how primordial binary evolution contributes to the formation of blue stragglers and discusses their impact on stellar population models and observational features.

Contribution

It summarizes the connections between binary evolution channels and blue straggler characteristics, highlighting their effects on population synthesis and observational diagnostics.

Findings

Blue stragglers originate from various binary evolutionary channels.

Binary evolution significantly influences integrated spectral energy distributions.

Blue stragglers affect colour-magnitude diagrams and stellar population parameters.

Abstract

Blue stragglers have been found in all populations. These objects are important in both stellar evolution and stellar population synthesis. Much evidence shows that blue stragglers are relevant to primordial binaries. Here, we summarize the links of binary evolution and blue stragglers, describe the characteristics of blue stragglers from different binary evolutionary channels, and show their consequences for binary population synthesis, such as for the integrated spectral energy distribution, the colour-magnitude diagram, the specific frequency, and the influences on colours etc..