DS Crucis (abbreviated DS Cru) is the variable‑star designation for a stellar object located in the southern constellation Crux (the Southern Cross). The designation follows the International Astronomical Union’s variable‑star naming convention, in which the letters “DS” together with the abbreviated constellation name identify a star whose variability has been recorded and catalogued.
Catalogue entries
- The star is listed in the General Catalogue of Variable Stars (GCVS) under the identifier DS Crucis.
- It is also recorded in other astronomical databases (e.g., SIMBAD) with the same designation.
Observational characteristics
- Constellation: Crux.
- Designation: DS Cru (variable‑star name) and, where applicable, a corresponding Bayer or Henry Draper catalogue number (the exact cross‑identifications depend on the catalogue version).
- Variability: The GCVS confirms that the star exhibits measurable changes in brightness, but the precise variability type (e.g., Cepheid, eclipsing binary, irregular) and magnitude range are not uniformly reported in publicly accessible sources.
Naming convention
Variable stars are named sequentially within each constellation, beginning with the single letters R through Z, then double letters RR through ZZ, and finally the combinations AA through QZ (excluding J). The designation DS therefore indicates that the star was the 273rd variable discovered in Crux under this scheme.
Scientific relevance
Because variable stars provide insight into stellar structure and evolution, objects such as DS Crucis are of interest to astronomers conducting photometric monitoring and spectroscopic studies. However, detailed analyses of DS Crucis (e.g., period, spectral classification, astrophysical parameters) are limited in the accessible literature, and the star does not appear prominently in major review articles.
References
- International Astronomical Union (IAU) – Variable Star Nomenclature.
- General Catalogue of Variable Stars (GCVS), latest edition.
- SIMBAD astronomical database, entry for “DS Cru”.
Note: Specific astrophysical data (e.g., exact coordinates, magnitude range, spectral type) for DS Crucis are not consistently provided in widely cited encyclopedic sources; further investigation of primary observational papers or dedicated stellar catalogues would be required for a comprehensive profile.