2004/11/19 by Cahit Yeşilyaprak, Z. Aslan · 2 citations
Physics and Astronomy · Earth and Planetary Sciences · #Stellar, planetary, and galactic studies #Atmospheric Ozone and Climate #Astrophysics and Star Formation Studies
paper · pdf · doi:10.1111/j.1365-2966.2004.08344.x
openalex publication_date 2004/11/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
We have studied the period–luminosity (P–L) relationships of oxygen-rich semiregular (SR) variables in several wavelength bands using Hipparcos parallaxes with an accuracy of better than 10 per cent. We have shown that there is a clear dependence on period of absolute magnitude in the U, B, V, R, IC, J, H, K, L, M, N, [12], [25], [60] and [100] bands, and that the slope of the linear Mλ– logP relation is a smooth function of wavelength. We point out that this relation can in principle be used to derive absolute bolometric magnitude as a function of period. The behaviour of the second periods of SR variables in the P–L relation in the V and K bands is also discussed.