# Galaxias de bajo brillo superficial: analogas a los sat\'elites de Andr\'omeda en Pegasus I?

## TL;DR

This study investigates the apparent bias in the size distribution of low-surface brightness galaxies across different environments, highlighting observational selection effects that influence galaxy detection at various distances.

## Contribution

It reveals the impact of observational biases on the perceived size distribution of LSB galaxies in different environments, emphasizing the need to account for selection effects.

## Key findings

- Distant groups lack small effective radius LSB galaxies due to detection limits.
- Large LSB systems are absent in the Local Group, possibly due to actual scarcity.
- Detection biases affect the observed size distribution of LSB galaxies.

## Abstract

Here we show the preliminary results of a study where there seems to be a bias effect in the size distributions of the detected low-surface brightness (LSB) galaxies in different environments. In this sense, more distant groups/clusters would lack small effective radius objects, while large systems would not found in the Local Group and nearby environments. While there may be an actual shortage of large LSB galaxies in low-density environments like the Local Group, the non-detection of small (and faint) systems at large distances is clearly a selection effect. As an example, LSB galaxies with similar sizes to those of the satellites of Andromeda in the Local Group, will be certainly missed in a visual identification at the distance of Pegasus I.