Globular Clusters around Galaxies in Groups
C. Da Rocha, C. Mendes de Oliveira, M. Bolte, B. L. Ziegler, T. H. Puzia
Abstract
We have obtained deep photometry of NGC 1199 (in HCG 22) and NGC 6868 (in the Telescopium group). Both galaxies are the optically brightest galaxies of their groups. Our analysis of B and R images taken with the Keck II and the VLT/ESO telescopes, detected a population of globular clusters around both galaxies, with total specific frequencies SN=1.70.6 for NGC 1199 and SN = 1.30.6 for NGC 6868. The color distributions of the globular cluster systems shows bimodal peaks centered at (B-R)0 = 1.130.10 and 1.420.10 (NGC 1199) and (B-R)0=1.120.10 and 1.420.10 (NGC 6868).
Create a lesson
Related papers
On binary pulsars and the force of gravity
Davor Palle
Tidal torques. A critical review of some techniques
Michael Efroimsky, James G. Williams
Dynamics of a Spherical Accretion Shock with Neutrino Heating and Alpha-Particle Recombination
Rodrigo Fernández, Christopher Thompson
Asymptotically FRW black holes
J. T. Firouzjaee, Reza Mansouri
Reaction of Accretion Disks to Abrupt Mass Loss During Binary Black Hole Merger
Sean M. O'Neill, M. Coleman Miller, Tamara Bogdanovic et al.
A Gamma-Ray Burst/Pulsar for Cosmic-Ray Positrons with a Dark Matter-like Spectrum
Kunihito Ioka