NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-04-23 T16:25:11 PDT
Help | Comment | NED Home

For refcode 2011A&A...525A..19C:
Retrieve 1315 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by European Southern Observatory (ESO). Reproduced by permission
2011A&A...525A..19C An optical/NIR survey of globular clusters in early-type galaxies. I. Introduction and data reduction procedures Chies-Santos, A. L.; Larsen, S. S.; Wehner, E. M.; Kuntschner, H.; Strader, J.; Brodie, J. P. Abstract. Context. The combination of optical and near-infrared (NIR) colours has the potential to break the age/metallicity degeneracy and offers a better metallicity sensitivity than optical colours alone. Previous tudies of extragalactic globular clusters (GCs) with this colour combination, however, have suffered from small samples or have been restricted to a few galaxies. Aims: We compile a homogeneous and representative sample of GC systems with multi-band photometry to be used in subsequent papers where ages and metallicity distributions will be studied. Methods: We acquired deep K-band images of 14 bright nearby early-type galaxies. The images were obtained with the LIRIS near-infrared spectrograph and imager at the William Herschel Telescope (WHT) and combined with optical ACS g and z images from the Hubble Space Telescope public archive. Results: For the first time we present homogeneous GC photometry in this wavelength regime for a large sample of galaxies, 14. We achieved a limiting magnitude of K ~ 20-21. For the majority of the galaxies we detect about 70 GCs each. NGC 4486 and NGC 4649, the cluster-richest galaxies in the sample contain 301 and 167 GCs, respectively. We present tables containing coordinates, photometry and sizes of the GCs. Key words: galaxies: elliptical and lenticular, cD, galaxies: evolution, galaxies: star clusters: general
Retrieve 1315 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home