2021/07/06 by Allison H. Costa, Allison H Costa, Kelsey E. Johnson +4 · 2 voices · 11 citations
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysics and Star Formation Studies #Cluster (spacecraft) #Dwarf galaxy #Galaxies: Formation, Evolution, Phenomena #Galaxy #Galaxy cluster #Globular cluster #Star cluster #Star formation #Stars #astro-ph.GA #astro-ph.SR
paper · pdf · doi:10.3847/1538-4357/ac0e93
published in The Astrophysical Journal 918(2), 76 (IOP Publishing) · 24 pages
arxiv created 2021/07/06 · arxiv published 2021/07/06 · openalex created_date 2021/07/19 · openalex publication_date 2021/09/01 · arxiv updated 2021/09/22 · openalex updated_date 2026/08/05
Abstract Henize 2–10 (He 2–10) is a nearby ( D = 9 Mpc) starbursting blue compact dwarf galaxy that boasts a high star formation rate and a low-luminosity active galactic nucleus. He 2–10 is also one of the first galaxies in which embedded super star clusters (SSCs) were discovered. SSCs are massive, compact star clusters that will impact their host galaxies dramatically when their massive stars evolve. Here, we discuss radio, submillimeter, and infrared observations of He 2–10 from 1.87 μ m to 6 cm in high angular resolution (∼0.3″), which allows us to disentangle individual clusters from aggregate complexes as identified at lower resolution. These results indicate the importance of spatial resolution to characterize SSCs, as low resolution studies of SSCs average over aggregate complexes that may host SSCs at different stages of evolution. We explore the thermal, nonthermal, and dust emission associated with the clusters along with dense molecular tracers to construct a holistic review of the natal SSCs that have yet to dramatically disrupt their parent molecular clouds. We assess the production rate of ionizing photons, extinction, total mass, and the star formation efficiency (SFE) associated with the clusters. Notably, we find that the SFE for the some of the natal clusters is high (>70%), which suggests that these clusters could remain bound even after the gas is dispersed from the system from stellar feedback mechanisms. If they remain bound, these SSCs could survive to become objects indistinguishable from globular clusters.