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arXiv · 2412.04542

Efficient Ionizers with Low H$\boldsymbol{\beta}$+[OIII] Equivalent Widths: JADES Spectroscopy of a Peculiar High-z Population

Isaac H. Laseter·Michael V. Maseda·Charlotte Simmonds·Ryan Endsley·Daniel Stark·Andrew J. Bunker·Rachana Bhatawdekar·Kristan Boyett·Alex J. Cameron·Stefano Carniani·Mirko Curti·Zhiyuan Ji·Pierluigi Rinaldi·Aayush Saxena·Sandro Tacchella·Chris Willott·Joris Witstok·Yongda Zhu
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Abstract

Early JWST photometric studies discovered a population of UV faint ($\rm 700$\r{A}) exclude the most metal-poor efficient ionizers and favor 1) more chemically enriched systems with comparable extreme radiation fields and 2) older starbursting systems. In contrast, metallicity degeneracies are reduced in H$\alpha$ space, enabling the identification of these metal-poor efficient ionizers by their specific star-formation rate.

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Isaac H. Laseter, Michael V. Maseda, Charlotte Simmonds, Ryan Endsley, Daniel Stark, Andrew J. Bunker, Rachana Bhatawdekar, Kristan Boyett, Alex J. Cameron, Stefano Carniani, Mirko Curti, Zhiyuan Ji, Pierluigi Rinaldi, Aayush Saxena, Sandro Tacchella, Chris Willott, Joris Witstok, Yongda Zhu. 2024-12-05. Efficient Ionizers with Low H$\boldsymbol{\beta}$+[OIII] Equivalent Widths: JADES Spectroscopy of a Peculiar High-z Population. https://arxiv.org/abs/2412.04542

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