STIS spectroscopy of the central 10 parsecs of M81: Evidence for a massive black hole

Nick Devereux, Holland Ford, Zlatan Tsvetanov, George Jacoby

Research output: Contribution to journalArticle

67 Citations (Scopus)

Abstract

Spectroscopic observations of the central 10 pc of M81 were obtained with STIS on board the Hubble Space Telescope during Cycle 7. Measurements of the Hα+[N II] blend reveal a velocity field indicative of a rotating disk of gas. The two-dimensional velocity field has been modeled as a thin disk rotating in a spherical gravitational potential. Minimizing the difference between the model and the observations allows useful constraints to be placed on the mass of the black hole in this mini Seyfert 1 galaxy. The data suggest that the mass of the nuclear black hole in M81 is 7.0-1+2 × 107 M and that the normal to the disk is inclined at an angle of 14° ± 2° to the line of sight.

Original languageEnglish
Pages (from-to)1226-1235
Number of pages10
JournalAstronomical Journal
Volume125
Issue number3 1767
DOIs
Publication statusPublished - 1 Mar 2003

    Fingerprint

Keywords

  • Galaxies: Seyfert
  • Galaxies: individual (M81, NGC 3031)

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this