Stellar Populations and Molecular Gas Composition in the Low-Metallicity Environment of WLM
Stellar Populations and Molecular Gas Composition in the Low-Metallicity Environment of WLM
We investigate the stellar populations and molecular gas properties of a star-forming region within the dwarf irregular (dIrr) galaxy WLM. Low-metallicity dIrrs like WLM offer a valuable window into star formation in environments that are unlike those of larger, metal-rich galaxies such as the Milky Way. In these conditions, carbon monoxide (CO), typically used to trace molecular clouds, is more easily photodissociated by ultraviolet (UV) radiation, leading to a larger fraction of CO-dark molecular gas, where H$_2$ exists without detectable CO emission, or CO-dark gas in the form of cold HI. Understanding the molecular gas content and the stellar populations in these star-forming regions provides important information about the role of CO-bright and CO-dark gas in forming stars.
Haylee N. Archer、Deidre A. Hunter、Bruce G. Elmegreen、Leslie K. Hunt、Rosalia O'brien、Elias Brinks、Phil Cigan、Monica Rubio、Rogier A. Windhorst、Rolf A. Jansen、Elijah P. Mathews
School of Earth and Space Exploration, Arizona State University, USALowell Observatory, USAKatonah, USAINAF, Osservatorio Astrofisico di Arcetri, ItalySchool of Earth and Space Exploration, Arizona State University, USACentre for Astrophysics Research, University of Hertfordshire, UKUnited States Naval Observatory, USADepartamento de Astronomia, Universidad de Chile, ChileSchool of Earth and Space Exploration, Arizona State University, USASchool of Earth and Space Exploration, Arizona State University, USADepartment of Astronomy & Astrophysics, The Pennsylvania State University, USA
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Haylee N. Archer,Deidre A. Hunter,Bruce G. Elmegreen,Leslie K. Hunt,Rosalia O'brien,Elias Brinks,Phil Cigan,Monica Rubio,Rogier A. Windhorst,Rolf A. Jansen,Elijah P. Mathews.Stellar Populations and Molecular Gas Composition in the Low-Metallicity Environment of WLM[EB/OL].(2025-03-30)[2025-06-01].https://arxiv.org/abs/2503.23517.点此复制
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