2007/03/27 by A. Feoli, A. FEOLI, D. Mele +1
Physics and Astronomy · #Astrophysical Phenomena and Observations #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #astro-ph
paper · pdf · doi:10.1142/s0218271807010729
published as Int.J.Mod.Phys.D16:1261-1272,2007 · 17 pages, 3 figures, accepted for publication in IJMPD
arxiv created 2007/03/27 · openalex publication_date 2007/08/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We support, with new fitting instruments and the analysis of more recent experimental data, the proposal of a relationship between the mass of a Supermassive Black Hole (SMBH) and the kinetic energy of random motions in the host elliptical galaxy. The first results obtained in a previous paper with 13 elliptical galaxies are now confirmed by the new data and an enlarged sample. We find M BH ∝ (M G σ 2 /c 2 ) β with 0.8 ≤ β ≤ 1 depending on the different fitting methods and samples used. The meaningful case β = 1 is carefully analyzed. Furthermore, we test the robustness of our relationship, including in the sample also lenticular and spiral galaxies and we show that the result does not change. Finally, we find a stronger correlation between the mass of the galaxy and the corresponding velocity dispersion that allows us to connect our relationship to the M BH ∝ σ α law. With respect to this law, our relationship has the advantage of having a smaller scatter.