# TW Boötis

> RR Lyrae variable star in the constellation Boötes

**Wikidata**: [Q81497813](https://www.wikidata.org/wiki/Q81497813)  
**Source**: https://4ort.xyz/entity/tw-bo-tis


## References

1. SIMBAD
2. Summary of delta-S metallicity measurements for bright RR Lyrae variables observed at Lick Observatory and KPNO between 1972 and 1987
3. General Catalogue of Variable Stars, 3rd ed.
4. Mid-infrared period-luminosity relations of RR Lyrae stars derived from the AllWISE Data Release
5. Probing the outer galactic halo with RR Lyrae from the Catalina surveys
6. The first INTEGRAL-OMC catalogue of optically variable sources
7. Gaia Data Release 2
8. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
9. The Tycho-2 catalogue of the 2.5 million brightest stars
10. Gaia Early Data Release 3
11. Kinematics of metal-poor stars in the Galaxy. II. Proper motions for a large nonkinematically selected sample
12. On the Use of Field RR Lyrae as Galactic Probes. III. The α-element Abundances
13. Chemical abundances of solar neighbourhood RR Lyrae stars