The structure of large-scale stellar disks in cluster lenticular galaxies

Abstract

By obtaining imaging data in two photometric bands for 60 lenticular galaxies - members of 8 southern clusters - with the Las Cumbres Observatory one-meter telescope network, we have analyzed the structure of their large-scale stellar disks. The parameters of radial surface-brightness profiles have been determined (including also disk thickness), and all the galaxies have been classified into pure exponential (Type I) disk surface-brightness profiles, truncated (Type II) and antitruncated (Type III) piecewise exponential disk surface-brightness profiles. We confirm the previous results of some other authors that the proportion of surface-brightness profile types is very different in environments of different density: in the clusters the Type-II profiles are almost absent while according to the literature data, in the field they constitute about one quarter of all lenticular galaxies. The Type-III profiles are equally presented in the clusters and in the field, while following similar scaling relations; but by undertaking an additional structural analysis including the disk thickness determination we note that some Type-III disks may be a combination of a rather thick exponential pseudobulge and an outer Type-I disk. Marginally we detect a shift of the scaling relation toward higher central surface brightnesses for the outer segments of Type-III disks and smaller thickness of the Type-I disks in the clusters. Both effects may be explained by enhanced radial stellar migration during disk galaxy infall into a cluster that in particular represents an additional channel for Type-I disk shaping in dense environments.

arXiv commentThe paper is published in the Astronomical Journal, vol. 156, September issue of 2018; the atlas of 60 S0 galaxies (the results of isophote analysis, color maps, surface-brightness profiles) is added into the ArXiv version

References in corpus (29)

• The Ninth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-III Baryon Oscillation Spectroscopic Survey
• Las Cumbres Observatory Global Telescope Network
• The Atlas3D project -- I. A volume-limited sample of 260 nearby early-type galaxies: science goals and selection criteria
• HyperLEDA. III. The catalogue of extragalactic distances
• Empirical Color Transformations Between SDSS Photometry and Other Photometric Systems
• Quantifying the Fragility of Galactic Disks in Minor Mergers
• The structure of galactic disks: Studying late-type spiral galaxies using SDSS
• A Classical Morphological Analysis of Galaxies in the Spitzer Survey of Stellar Structure in Galaxies (S4G)
• Anti-Truncation of Disks in Early-Type Barred Galaxies
• The Outer Disks of Early-Type Galaxies. I. Surface-Brightness Profiles of Barred Galaxies
• The EFIGI catalogue of 4458 nearby galaxies with detailed morphology
• Photometric scaling relations of lenticular and spiral galaxies
• Antitruncated Stellar Disks via Minor Mergers
• A volume-limited sample of X-ray galaxy groups and clusters - I. Radial entropy and cooling time profiles
• The Outer Disks of Early-Type Galaxies. II. Surface-Brightness Profiles of Unbarred Galaxies and Trends with Hubble Type
• A COMPARATIVE STUDY OF MORPHOLOGICAL CLASSIFICATIONS OF APM GALAXIES
• Morphology and environment of galaxies with disc breaks in the S4G and NIRS0S
• Formation of S0 galaxies through mergers. V. Antitruncated stellar discs resulting from major mergers
• The Relation Between Galaxy Morphology and Environment in the Local Universe: An RC3-SDSS Picture
• Morphological Fractions of Galaxies in WINGS Clusters: revisiting the Morphology-Density Paradigm
• 2MASS photometry of edge-on spiral galaxies. I. Sample and general results
• Decoupled gas kinematics in isolated S0 galaxies
• A Strong Dichotomy in S0 Disk Profiles Between the Virgo Cluster and the Field
• The environmental dependence of the structure of galactic discs in STAGES S0 galaxies: implications for S0 formation
• The effect of environment on the structure of disc galaxies
• The Role of Stellar Radial Motions in Shaping Galaxy Surface Brightness Profiles
• Photometric scaling relations of antitruncated stellar discs in S0-Scd galaxies
• Thickness of Stellar Disks in Early-type Galaxies
• The origin of type-I profiles in cluster lenticulars: An interplay between ram pressure stripping and tidally-induced spiral migration

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• Star formation in outer rings of S0 galaxies. II. NGC 4513 -- a multi-spin ringed S0 galaxy
• The structure of stellar disks in isolated lenticular galaxies
• Using the EAGLE simulations to elucidate the origin of disc surface brightness profile breaks as a function of mass and environment