# HELP project - a dreamed-of multiwavelength dataset for SED fitting: the influence of used models for the main physical properties of galaxies

## TL;DR

The HELP project provides a comprehensive multiwavelength galaxy dataset to test and improve spectral energy distribution fitting models, focusing on the influence of different modules on physical property estimation.

## Contribution

This work introduces a large multiwavelength galaxy catalog and evaluates the impact of various modeling modules on derived galaxy properties.

## Key findings

- Identified how different modules affect stellar mass estimates.
- Developed a new procedure for selecting peculiar galaxies.
- Provided a valuable dataset for future SED fitting improvements.

## Abstract

The Herschel Extragalactic Legacy Project (HELP) focuses to publish an astronomical multiwavelength catalogue of millions of objects over 1300~deg$^2$ of the Herschel Space Observatory survey fields. Millions of galaxies with ultraviolet--far infrared photometry {make} HELP a perfect sample for testing spectral energy distribution fitting models, and to prepare tools for next-generation data. In the frame of HELP collaboration we estimated the main physical properties of all galaxies from the HELP database and we checked a new procedure to select peculiar galaxies from large galaxy sample and we investigated the influence of used modules for stellar mass estimation.