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The supermassive black hole of M 87 and the kinematics of its associated gaseous disk

  • F. Duccio Macchetto
Conference paper
Part of the Lecture Notes in Physics book series (LNP, volume 530)

Abstract

We have carried out the first HST long-slit observations of a gaseous disk around a candidate super-massive black hole. The results of this study on the kinematics of the gaseous disk in M 87 are a considerable improvement in both spatial resolution and accuracy over previous observations and requires a projected mass of MBH (sin i)2=(2.0±0.5)×109 M (MBH=3.2×109 M for a disk inclination i=52°) concentrated within a sphere whose radius is less than 0″.05 (3.5 pc) to explain the observed rotation curve. The kinematics of the ionized gas is well described by a thin disk in Keplerian motion. A lower limit to the mass-to-light ratio of this region is M/LV⋍110, significantly strengthening the claim that this mass is due to the presence of a central black hole in M 87.

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Copyright information

© Springer-Verlag 1999

Authors and Affiliations

  • F. Duccio Macchetto
    • 1
    • 2
  1. 1.Space Telescope Science InstituteBaltimoreUSA
  2. 2.Affiliated to the Astrophysics Division Space Science Department of ESASpace Telescope Science InstituteUSA

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