# WZ Hydrae

> RR Lyrae variable star in the constellation Hydra

**Wikidata**: [Q87743210](https://www.wikidata.org/wiki/Q87743210)  
**Source**: https://4ort.xyz/entity/wz-hydrae


## References

1. SIMBAD
2. Delta-S metallicities of 35 field RR Lyrae stars and the nature of BB Virginis and AR Herculis
3. Gaia Data Release 3
4. General Catalogue of Variable Stars, 3rd ed.
5. Mid-infrared period-luminosity relations of RR Lyrae stars derived from the AllWISE Data Release
6. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
7. Gaia Early Data Release 3
8. Gaia Data Release 2
9. On the Use of Field RR Lyrae as Galactic Probes. III. The α-element Abundances
10. On the Use of Field RR Lyrae as Galactic Probes. II. A New ΔS Calibration to Estimate Their Metallicity