# Omicron Persei A

> spectroscopic binary in the Omicron Persei trinary

**Wikidata**: [Q66477365](https://www.wikidata.org/wiki/Q66477365)  
**Source**: https://4ort.xyz/entity/omicron-persei-a


## References

1. SIMBAD
2. General Catalogue of Variable Stars
3. MK classifications of some northern hemisphere binary systems
4. Spectral Classification
5. The kinematics of the Gould belt: an expanding group ?
6. The radial velocities of five stars in the zeta Persei aggregate
7. Seven-colour photometry of O, B and A stars
8. Contribution aux recherches de photometrie photoelectrique dans la Galaxie
9. On the precision of the determination of spectral classes and colour excesses of O-A2 stars by the methods of two color diagrams
10. A two-dimensionnal quantitative spectral classification of 283 O5-B7 stars and the construction of a spectrum-absolute magnitude diagram
11. The equivalent widths of absorption lines in the spectra of 109 O5-B7stars
12. Two-dimensional spectral classification by narrow-band photometry for B stars in clusters and associations
13. A system of three-color photometry, with applications to galactic structure in Cygnus
14. Line broadening in the spectra of O and early B-type stars
15. On the H and K emission in dwarf stars
16. Photometry of the Perseus aggregates
17. Photoelectric spectrophotometry. I. Hydrogen line intensities of O, B and A type stars
18. Studies in galactic structure. II. Luminosity classification for 1270 blue giants stars
19. Recherches sur la loi d'absorption de la poussiere interstellaire et sur le spectre continu des etoiles O et B
20. Studies in galactic structure. I. A preliminary determination of the space distribution of the blue giants
21. Fundamental stellar photometry for standards of spectral type on the revised system of the Yerkes spectral atlas
22. Contribution a l'etude de la zone convective des etoiles
23. Absolute Helligkeiten von 115 B-Sternen
24. Revised Standards for Supergiants on the System of the Yerkes Spectral Atlas
25. Dark dust and single-cloud sightlines in the ISM
26. Photoeletric measures of hydrogen-line absorption in early-type stars
27. Washington Double Star Catalog
28. Catalogue of Stellar Photometry in Johnson's 11-color system
29. The Tycho double star catalogue
30. Gaia Data Release 2
31. Gaia Early Data Release 3
32. SB9: The ninth catalogue of spectroscopic binary orbits
33. The interstellar Ca II distance scale
34. VizieR Online Data Catalog: Catalog of Stellar Rotational Velocities (Glebocki+ 2005)
35. Fundamental parameters of B supergiants from the BCD system. I. Calibration of the (λ_1, D) parameters into Teff