# Does the LFIR-LHCN correlation hold for low LFIR isolated galaxies?

## TL;DR

This study investigates whether low star formation activity isolated galaxies follow the established correlation between HCN luminosity and far-infrared luminosity, which is known for more active galaxies.

## Contribution

The paper tests the applicability of the $L_{HCN}$-$L_{FIR}$ relation to low star formation, isolated galaxies using new HCN(1-0) emission observations.

## Key findings

- Low $L_{FIR}$ IGs show deviations from the established correlation.
- Results suggest the relation may not hold for galaxies with very low star formation.
- Implications for understanding star formation in isolated galaxy environments.

## Abstract

Low $L_{FIR}$ Isolated Galaxies (IGs) from the AMIGA sample have low level of Star Formation (SF) activity. We observed the HCN(1-0) emission in a sample of IGs in order to test whether they follow the tight relation between $L_{HCN}$ and $L_{FIR}$ found for galaxies with more active SF.