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Identification and properties of isolated field elliptical galaxies from CFHTLS-W1

Journal Article · · Publications of the Astronomical Society of Australia
DOI:https://doi.org/10.1017/pasa.2022.28· OSTI ID:1981806

We present a catalogue of isolated field elliptical (IfE) galaxies drawn from the W1 field of the Canada-France-Hawaii Telescope Legacy Survey (CFHTLS). 228 IfEs were identified from a flux-limited (r < 21.8) galaxy catalogue which corresponds to a density of 3 IfE/sq.deg. For comparison we consider a sample of elliptical galaxies living in dense environments, based on identification of the brightest cluster galaxies (BGCs) in the same survey. Using the same dataset for the comparison sample ensures a uniform selection, including in the redshift range as IfEs (i.e. 0.1 < z <0.9). A comparison of elliptical galaxies in different environments reveals that IfEs and BCGs have similar behaviours in their colours, star formation activities, and scaling relations of mass–size and size–luminosity. IfEs and BCGs have similar slopes in the scaling relations with respect to cluster ellipticals within the $$ -24 \leq M_{r} \leq -22 $$ magnitude and $$10.2 < \textrm{log}(M_{*}/ \textrm M_\odot)\leq12.0 $$ mass ranges. Three IfEs identified in this study can be associated with fossil groups found in the same survey area which gives clues for future studies.

Research Organization:
US Department of Energy (USDOE), Washington, DC (United States). Office of Science, Sloan Digital Sky Survey (SDSS)
Sponsoring Organization:
USDOE
OSTI ID:
1981806
Journal Information:
Publications of the Astronomical Society of Australia, Journal Name: Publications of the Astronomical Society of Australia Vol. 39; ISSN 1323-3580
Publisher:
CSIROCopyright Statement
Country of Publication:
United States
Language:
English

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