# Lambda Cygni

> star system in the constellation Cygnus

**Wikidata**: [Q509606](https://www.wikidata.org/wiki/Q509606)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Lambda_Cygni)  
**Source**: https://4ort.xyz/entity/lambda-cygni


## References

1. Washington Double Star Catalog
2. General Catalogue of Variable Stars
3. SIMBAD
4. The Uppsala spectral classification
5. Space motions and distribution of the apparently bright B-type stars
6. Axial Rotation and Line Broadening in Stars of Spectral Types F0-K5
7. The intensity of certain lines of He I in the B stars
8. Spectral types and rotational velocities of the brighter Be stars and A-F type shell stars
9. Application of convolutional neural networks for stellar spectral classification
10. Catalogue of Stellar Photometry in Johnson's 11-color system
11. VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)
12. Validation of the new Hipparcos reduction
13. Astrophysical supplements to the ASCC-2.5: Ia. Radial velocities of ∼55000 stars and mean radial velocities of 516 Galactic open clusters and associations
14. The atmospheric parameters and spectral interpolator for the MILES stars
15. The IACOB project. III. New observational clues to understand macroturbulent broadening in massive O- and B-type stars
16. Rotational velocities of A-type stars. IV. Evolution of rotational velocities