# Dwarf Galaxies in the Local Volume

## TL;DR

This paper reviews observational data on about 1000 dwarf galaxies within 11 Mpc, highlighting their properties, distribution, and significance for testing cosmological models and understanding local universe structures.

## Contribution

It provides a comprehensive overview of Local Volume dwarf galaxies, emphasizing their role in testing the $
m f extit{ extLambda CDM}$ paradigm and their use as tracers for mass estimation.

## Key findings

- Dwarf galaxies constitute 5/6 of the Local Volume sample.
- Approximately 40% of these dwarfs have precise distance measurements from Hubble.
- LV dwarfs are crucial for understanding galaxy formation and local mass distribution.

## Abstract

We review observational data about a sample of Local Volume objects containing about 1000 galaxies within 11 Mpc of the Milky Way. Dwarf galaxies with stellar masses $M_*/M_{\odot} < 9$ dex make up 5/6 of the sample. Almost 40% of them have their distances measured with high precision using the Hubble Space Telescope. Currently, the LV is the most representative and least selection-affected sample of dwarf galaxies suitable for testing the standard $\Lambda$CDM paradigm at the shortest cosmological scales. We discuss the H II properties of dwarf galaxies in different environments and the star formation rates in these systems as determined from $FUV$ - and H$\alpha$-survey data. We also pay certain attention to the baryonic Tully-Fisher relation for low-mass dwarf galaxies. We also point out that LV dwarfs are important `tracers' for determining the total masses of nearby groups and the nearest Virgo cluster.