We present the properties of a large sample (12 282) of nearly face‐on low surface brightness (LSB) disc galaxies selected from the main galaxy sample of SDSS‐DR4. These properties include B‐band central surface brightness μ0(B), scalelengths h, integrated magnitudes, colours and distances D. This sample has μ0(B) values from 22 to 24.5 mag arcsec−2 with a median value of 22.42 mag arcsec−2, and disc scalelengths ranging from 2 to 19 kpc. They are quite bright with MB taking values from −18 to −23 mag with a median value of −20.08 mag. There exist clear correlations between log h and MB, log h and log D, log D and MB. However, no obvious correlations are found between μ0(B) and log h, colours, etc. The correlation between colours and log h is weak even though it exists. Both the optical–optical and optical–NIR colour–colour diagrams indicate that most of them have a mixture of young and old stellar populations. They also satisfy colour–magnitude relations, which indicate that brighter galaxies tend generally to be redder. The comparison between the LSBGs and a control sample of nearly face‐on disc galaxies with higher surface brightness (HSB) with μ0(B) from 18.5 to 22 mag arcsec−2 show that, at a given luminosity or distance, the observed LSB galaxies tend to have larger scalelengths. These trends could be seen gradually by dividing both the LSBGs and HSBGs into two subgroups according to surface brightness. A volume‐limited subsample was extracted to check the incompleteness of surface brightness. The only one of the property relations having an obvious change is the relation of log h versus μ0(B), which shows a correlation in this subsample.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.