# Eta Leonis

> binary star system in the constellation Leo

**Wikidata**: [Q14208](https://www.wikidata.org/wiki/Q14208)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Eta_Leonis)  
**Source**: https://4ort.xyz/entity/eta-leonis


## References

1. SIMBAD
2. A study of the bright A stars. I. A catalogue of spectral classifications
3. Spectral classification of Southern fundamental stars
4. Contribution aux recherches de photometrie photoelectrique dans la Galaxie
5. A spectrophotometric study of hydrogen lines in the spectra of peculiar A0 type stars
6. The equivalent widths of absorption lines in the spectra of 62 B8-F2 type stars
7. Spectral classification of 533 B8-A2 stars and the mean absolute magnitude of A0V stars
8. Spectral types of bright southern stars
9. Line broadening in high-luminosity stars. II. Less luminous supergiants
10. Studies in galactic structure. II. Luminosity classification for 1270 blue giants stars
11. The spectra and rotational velocities of the bright stars of Draper types B8-A2
12. Contribution a l'etude de la zone convective des etoiles
13. Revised Standards for Supergiants on the System of the Yerkes Spectral Atlas
14. Neutral Oxygen in stellar atmospheres
15. An atlas of stellar spectra with an outline of spectral classification
16. Fundamental parameters of B supergiants from the BCD system. I. Calibration of the (λ_1, D) parameters into Teff
17. Ground-based observations of some stars classified in the satellite ultraviolet with spectral particularities
18. The early A type stars: refined MK classification, confrontation with Stromgren photometry, and the effects of rotation
19. Photoeletric measures of hydrogen-line absorption in early-type stars
20. Version 2 of the Hipparcos Input Catalogue
21. Freebase Data Dumps. 2013
22. Catalogue of Stellar Photometry in Johnson's 11-color system
23. Gaia Data Release 3
24. Gaia Early Data Release 3
25. Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system
26. Stellar population models in the UV. I. Characterisation of the New Generation Stellar Library
27. HST Low-resolution Stellar Library
28. Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i
29. The atmospheric parameters and spectral interpolator for the MILES stars