SIMBAD references

2012MNRAS.426.1475U - Mon. Not. R. Astron. Soc., 426, 1475-1495 (2012/October-3)

The SLUGGS survey: calcium triplet-based spectroscopic metallicities for over 900 globular clusters.

USHER C., FORBES D.A., BRODIE J.P., FOSTER C., SPITLER L.R., ARNOLD J.A., ROMANOWSKY A.J., STRADER J. and POTA V.

Abstract (from CDS):

Although the colour distribution of globular clusters in massive galaxies is well known to be bimodal, the spectroscopic metallicity distribution has been measured in only a few galaxies. After redefining the calcium triplet index-metallicity relation, we use our relation to derive the metallicity of 903 globular clusters in 11 early-type galaxies. This is the largest sample of spectroscopic globular cluster metallicities yet assembled. We compare these metallicities with those derived from Lick indices finding good agreement. In six of the eight galaxies with sufficient numbers of high-quality spectra we find bimodality in the spectroscopic metallicity distribution. Our results imply that most massive early-type galaxies have bimodal metallicity as well as colour distributions. This bimodality suggests that most massive early-type galaxies experienced two periods of star formation.

Menzel Fellow.


Abstract Copyright: © 2012 The Authors Monthly Notices of the Royal Astronomical Society © 2012 RAS

Journal keyword(s): globular clusters: general - galaxies: abundances - galaxies: star clusters: general - galaxies: stellar content

VizieR on-line data: <Available at CDS (J/MNRAS/426/1475): table1.dat table3.dat>

Nomenclature: Table 3: [PFR2013] NGC1407 GCNNN (Nos GC370 to GC373) added.

Simbad objects: 927

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2021.08.04-15:00:27

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