Structural Parameters of the M 87 Globular Clusters

  title={Structural Parameters of the M 87 Globular Clusters},
  author={Juan Fernando Pinillos Madrid and William E. Harris and John Paul Blakeslee and Mat́ıas G{\'o}mez},
We derive structural parameters for ∼ 2000 globular clusters in the giant Virgo elliptical M87 using extremely deep Hubble Space Telescope images in F606W (V) and F814W (I) taken with the ACS/WFC. The cluster scale sizes (half-light radii rh) and ellipticities are determined from PSF-convolved Kingmodel profile fitting. We find that the rh distribution closely resembles the inner Milky Way clusters, peaking at rh ≃ 2.5 pc and with virtually no clusters more compact than rh ≃ 1 pc. The metal… CONTINUE READING
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