Mapping the Nearest Green Pea Analog and LyC Emitter Candidate NGC 2366/Mrk 71
Abstract
We propose A-configuration VLA observations of the dwarf galaxy NGC 2366, including Mrk 71, the best nearby analog of the Green Peas and Lyman continuum (LyC) emitter candidate. Our goal is to study the physical properties of Knots A and B in Mrk 71, which could not be disentangled by the previous low-resolution VLA observations. A superbubble is produced by energy-driven feedback from Knot B, while a momentum-driven feedback is generated by radiative cooling in Knot A as pointed out by HST/WFC3 and NOEMA observations. The high-angular resolution VLA observations at multiple frequencies will be used to: (1) spatially resolve the thermal and nonthermal features of Knots A and B with the angular separation at scales comparable to HST images; (2) investigate the physical conditions of the ISM surrounding a radiatively cooling region detected in Knot A by the NOEMA observations; (3) determine the physical properties of super stellar clusters in the nearest Green Pea analog such as the ionized density, radii, stellar mass, and optical depth; and (4) estimate the ionizing flux and LyC escape fraction in Knot A, a LyC emitter candidate that may improve significantly our understanding of LyC emitters and their implications for cosmic reionization.
- Publication:
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NRAO Proposal ID VLA/23A-369
- Pub Date:
- June 2023
- Bibcode:
- 2023nrao.prop..369D