# Abell 2218

> galaxy cluster

**Wikidata**: [Q1195834](https://www.wikidata.org/wiki/Q1195834)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Abell_2218)  
**Source**: https://4ort.xyz/entity/abell-2218


## References

1. SIMBAD
2. Freebase Data Dumps. 2013
3. The L_X_-{sigma} relation for galaxies and clusters of galaxies
4. [Source](https://articles.adsabs.harvard.edu//full/1958ApJS....3..211A/0000255.000.html)
5. [Source](https://ui.adsabs.harvard.edu/link_gateway/1958ApJS....3..211A/ADS_PDF#page=46)
6. Updating the {sigma}-T relationship for galaxy clusters
7. NASA/IPAC Extragalactic Database