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The M•–Σ* Relation Derived From Sphere Of Influence Arguments, Daniel P. Batcheldor
The M•–Σ* Relation Derived From Sphere Of Influence Arguments, Daniel P. Batcheldor
Aerospace, Physics, and Space Science Faculty Publications
The observed relation between supermassive black hole (SMBH) mass (M•) and bulge stellar velocity dispersion (σ*) is described by log M• = α + βlog(σ*/200 km s-1). As this relation has important implications for models of galaxy and SMBH formation and evolution, there continues to be great interest in adding to the M• catalog. The "sphere of influence" (ri) argument uses spatial resolution to exclude some M• estimates and pre-select additional galaxies for further SMBH studies. This Letter quantifies the effects of applying the ri argument to a population of galaxies and SMBHs that do not follow the M•–σ* relation. …