# Abell 1991

> Galaxy cluster

**Wikidata**: [Q4666695](https://www.wikidata.org/wiki/Q4666695)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Abell_1991)  
**Source**: https://4ort.xyz/entity/abell-1991


## References

1. SIMBAD
2. Optical emission line nebulae in galaxy cluster cores 1: the morphological, kinematic and spectral properties of the sample
3. A compilation of redshifts and velocity dispersions for Abell clusters
4. The L_X_-{sigma} relation for galaxies and clusters of galaxies