Wide-field study of the peculiar globular cluster system hosted by the field lenticular NGC 1172

Abstract

We present a wide-field study of the globular cluster system (GCS) of the field lenticular galaxy NGC 1172, based on observations from GMOS/Gemini (optical), FourStar/Magellan (NIR), and archival data from ACS/HST (optical). This analysis covers the full extension of the GCS, and results in a value of specific frequency (S_N=8.6 +/- 1.5) peculiarly high for an intermediate-mass galaxy in a low-density environment such as this one. We find that the GCS appears to be bimodal, although the colour distribution is narrow and does not allow for an accurate separation of the subpopulations. However, the combination of optical and NIR filters allows us to obtain an estimation of the metallicity distribution based on the photometry, which supports bimodality. We conclude that the presence of a large fraction of metal-poor globular clusters (GCs) and the high specific frequency point to NGC 1172 having accreted a significant amount of GCs from low-mass satellites in the past.

arXiv comment12 pages, 13 figures, accepted for publication in MNRAS

References in corpus (66)

• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• The Optical and Near-Infrared Properties of Galaxies: I. Luminosity and Stellar Mass Functions
• The u'g'r'i'z' Standard Star Network
• The ACS Virgo Cluster Survey. VI. Isophotal Analysis and the Structure of Early-Type Galaxies
• The ACS Virgo Cluster Survey IX: The Color Distributions of Globular Cluster Systems in Early-Type Galaxies
• The Galactic disk mass-budget : I. stellar mass-function and density
• The formation and assembly history of the Milky Way revealed by its globular cluster population
• Young massive star clusters in nearby galaxies. II.Software tools, data reductions and cluster sizes
• Modeling the Metallicity Distribution of Globular Clusters
• The ACS Virgo Cluster Survey. XII. The Luminosity Function of Globular Clusters in Early Type Galaxies
• Globular clusters as the relics of regular star formation in 'normal' high-redshift galaxies
• GaBoDS: The Garching-Bonn Deep Survey; IV. Methods for the Image reduction of multi-chip Cameras
• A Catalog of Globular Cluster Systems: What Determines the Size of a Galaxy's Globular Cluster Population?
• The Frequency of Tidal Features Associated with Nearby Luminous Elliptical Galaxies from a Statistically Complete Sample
• The globular cluster system of NGC 1399 V. dynamics of the cluster system out to 80 kpc
• The SLUGGS Survey: Kinematics for over 2500 Globular Clusters in Twelve Early-type Galaxies
• Explaining the Color Distributions of Globular Cluster Systems in Elliptical Galaxies
• The ACS Fornax Cluster Survey. VIII. The Luminosity Function of Globular Clusters in Virgo and Fornax Early-Type Galaxies and its Use as a Distance Indicator
• Globular Cluster Systems in Nearby Dwarf Galaxies: III. Formation Efficiencies of Old Globular Clusters
• Galactic Dark Matter Halos and Globular Cluster Populations. III: Extension to Extreme Environments
• THELI -- Convenient reduction of any optical, near- and mid-infrared imaging data
• The HST/ACS Coma Cluster Survey IV. Intergalactic Globular Clusters and the Massive Globular Cluster System at the Core of the Coma Galaxy Cluster
• Large-scale study of the NGC 1399 globular cluster system in Fornax
• Dark Matter Halos in Galaxies and Globular Cluster Populations
• Evidence for Two Phases of Galaxy Formation from Radial Trends in the Globular Cluster System of NGC 1407
• Globular Cluster Systems in Brightest Cluster Galaxies: A Near-Universal Luminosity Function?
• A single population of red globular clusters around the massive compact galaxy NGC 1277
• The connection between globular cluster systems and their host galaxy and environment: a case study of the isolated elliptical NGC 821
• Star cluster formation in cosmological simulations. III. Dynamical and chemical evolution
• Globular Cluster Systems in Brightest Cluster Galaxies. III: Beyond Bimodality
• The ACS Fornax Cluster Survey VII. Half-Light Radii of Globular Clusters in Early-Type Galaxies
• The star formation history of galaxies: the role of galaxy mass, morphology and environment
• Origins of scaling relations of globular cluster systems
• An optical/NIR survey of globular clusters in early-type galaxies III. On the colour bimodality of GC systems
• Star Clusters in Evolving Galaxies
• Dynamical Evolution of Globular Cluster Systems formed in Galaxy Mergers: Deep HST/ACS Imaging of Old and Intermediate-Age Globular Clusters in NGC 3610
• The Globular Cluster Systems of NGC 3258 and NGC 3268 in the Antlia Cluster
• The SLUGGS Survey: Measuring globular cluster ages using both photometry and spectroscopy
• The difference in metallicity distribution functions of halo stars and globular clusters as a function of galaxy type: A tracer of globular cluster formation and evolution
• The Ages of Globular Clusters in NGC 4365 Revisited with Deep HST Observations
• The Fornax Deep Survey with VST. IX. The catalog of sources in the FDS area, with an example study for globular clusters and background galaxies
• Hubble Space Telescope Observations of cD Galaxies and their Globular Cluster Systems
• The ACS Fornax Cluster Survey. III. Globular Cluster Specific Frequencies of Early-Type Galaxies
• Isolated elliptical galaxies in the local Universe
• Globular Cluster Systems of Early-type Galaxies in Low-density Environments
• The globular cluster system of NGC1316. I. Wide-field photometry in the Washington system
• The SLUGGS Survey: Globular cluster system kinematics and substructure in NGC 4365
• Near-Infrared Observations of Globular Clusters in NGC 4472, NGC 4594, NGC 3585 and NGC 5813 and Implications for their Ages and Metallicities
• The complex star cluster system of NGC 1316 (Fornax A)
• Isolated ellipticals and their globular cluster systems III. NGC 2271, NGC 2865, NGC 3962, NGC 4240 and IC 4889
• The SLUGGS survey: Exploring the globular cluster systems of the Leo II group and their global relationships
• Formation, Evolution and Properties of Isolated Field Elliptical Galaxies
• The paucity of globular clusters around the field elliptical NGC 7507
• Globular cluster systems as tracers of the evolutionary history in NGC 3258 and NGC 3268
• Young globular clusters in NGC 1316
• New Constraints on Early-Type Galaxy Assembly from Spectroscopic Metallicities of Globular Clusters in M87
• Scaling relations for globular cluster systems in early-type galaxies
• The merger remnant NGC 3610 and its globular cluster system: a large-scale study
• Multicolour-metallicity Relations from Globular Clusters in NGC 4486 (M87)
• Nonlinear Color-Metallicity Relations of Globular Clusters. VIII. Reproducing Color Distributions of Individual Globular Cluster Systems in the Virgo and Fornax Galaxy Clusters
• The Next Generation Virgo cluster Survey (NGVS). XXVI. The issues of photometric age and metallicity estimates for globular clusters
• Optical-NIR analysis of globular clusters in the IKN dwarf spheroidal: a complex star formation history
• A Wide-field Photometric Survey of Globular Clusters in the Peculiar Early-type Galaxy M85
• A Gemini/GMOS study of the bright elliptical galaxy NGC 3613 and its globular cluster system
• Field/Isolated lenticular galaxies with high $S_N$ values: the case of NGC 4546 and its globular cluster system
• The globular cluster system of the isolated elliptical NGC 6411: An old system in an intermediate-age galaxy?

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• Scaling relations for globular cluster systems in early-type galaxies. II. Is there an environmental dependence?
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