A deep dive into NGC 604 with Gemini/NIRI imaging

TL;DR

This study uses Gemini/NIRI near-infrared imaging to analyze NGC 604, revealing numerous sources with infrared excess and potential star-forming regions, contributing to understanding massive star formation and stellar populations.

Contribution

First near-infrared deep photometry of NGC 604 with Gemini/NIRI, identifying sources with infrared excess and mapping extinction to study star formation.

Findings

164 sources with infrared excess detected

Identification of potential giant/supergiant stars or clusters

Extinction map of NGC 604 created

Abstract

The giant HII region NGC 604 constitutes a complex and rich population to studying detail many aspects of massive star formation, such as their environments and physical conditions, the evolutionary processes involved, the initial mass function for massive stars and star-formation rates, among many others. Here, we present our first results of a near-infrared study of NGC 604 performed with NIRI images obtained with Gemini North. Based on deep JHK photometry, 164 sources showing infrared excess were detected, pointing to the places where we should look for star-formation processes currently taking place. In addition, the color-color diagram reveals a great number of objects that could be giant/supergiant stars or unresolved, small, tight clusters. A extinction map obtained based on narrow-band images is also shown.