# The tricky line of sight towards Cygnus-X: The [DB2001] CL05 embedded cluster as a pilot case

## TL;DR

This study reveals that key star clusters in Cygnus-X are at different distances, challenging previous assumptions of their interaction and emphasizing the need for precise extinction and distance measurements in star formation research.

## Contribution

It demonstrates the importance of accurate distance and extinction analysis in understanding the true spatial relationships of star clusters in Cygnus-X.

## Key findings

- Berkeley 87 and CL05 are at different distances
- Previous interaction claims are invalidated
- Highlights the need for careful extinction correction

## Abstract

The nearest massive star-forming complex, Cygnus-X, is widely used as a laboratory for star cluster formation and feedback processes, under the implicit assumption that all its components are located roughly at the same distance. We present a multi-wavelength study of a 15' x 15' field in southern Cygnus-X, where different components involving clustered star formation are overlapped. Preliminary results indicate that the Berkeley 87 and [DB2001] CL05 clusters are actually located at very different distances, invalidating previous claims of physical interaction between them. This shows the importance of a careful treatment of extinction and distance calculations for cluster formation studies, particularly in Cygnus-X.