1 2 3 Cousins, A. W. J. (1984), “Standardization of Broadband Photometry of Equatorial Standards”, South African Astronomical Observatory Circulars, 8: 59, Bibcode:1984SAAOC...8...59C
1 2 Lang, Kenneth R. (2006), Astrophysical formulae, Astronomy and astrophysics library, 1 (ấn bản 3), Birkhäuser, ISBN3-540-29692-1. The radius (R*) is given by: 2 ⋅ R ∗ = ( 10 − 3 ⋅ 211 ⋅ 8.17 ) AU 0.0046491 AU / R ⨀ ≈ 370.8 ⋅ R ⨀ {\displaystyle {\begin{aligned}2\cdot R_{*}&={\frac {(10^{-3}\cdot 211\cdot 8.17)\ {\text{AU}}}{0.0046491\ {\text{AU}}/R_{\bigodot }}}\\&\approx 370.8\cdot R_{\bigodot }\end{aligned}}}
1 2 3 4 Smith, Verne V.; Lambert, David L. (tháng 6 năm 1987), “Are the red supergiants Epsilon Peg and 12 PUP victims of mild s-processing?”, Monthly Notices of the Royal Astronomical Society, 226 (3): 563–579, Bibcode:1987MNRAS.226..563S, doi:10.1093/mnras/226.3.563
↑ Bernacca, P. L.; Perinotto, M. (1970). “A catalogue of stellar rotational velocities”. Contributi Osservatorio Astronomico di Padova in Asiago. 239 (1). Bibcode:1970CoAsi.239....1B.
↑ Perryman, M. A. C.; Lindegren, L.; Kovalevsky, J.; và đồng nghiệp (tháng 7 năm 1997), “The Hipparcos Catalogue”, Astronomy and Astrophysics, 323: L49–L52, Bibcode:1997A&A...323L..49P
↑ Richichi, A.; Percheron, I.; Khristoforova, M. (tháng 2 năm 2005), “CHARM2: An updated Catalog of High Angular Resolution Measurements”, Astronomy and Astrophysics, 431 (2): 773–777, Bibcode:2005A&A...431..773R, doi:10.1051/0004-6361:20042039
