Evidence for a Central Black Hole in Omega Centauri

Eva Noyola, Karl Gebhardt (University of Texas at Austin)& Marcel Bergmann (Gemini Observatory)

ω Centauri’s Surface Brightness Profile

Central logarithmic slope is -0.08

Central field

Reconstructed image from Gemini GMOS IFU

B-band ACS

Acquisition image

Convolved ACS image

Spectra

Data

Template

Convolved template

25 km/s

Models 6x104 Msun BH4x104 Msun BH

• Isotropic models from our deprojected SB profile (assuming a constant M/L).

• Green lines: various central black hole masses.