Repeating Outbursts from the Young Stellar Object Gaia23bab (= SPICY 97589)

(2) University of Wisconsin-Whitewater; (3) Universit\'e Clermont Auvergne; (4) Universit\'e Paris-Saclay; (5) Instituto Nazionale di Fisica Nucleare Section of Naples); Emille E. O. Ishida (3); Julien Peloton (4); Michael A. Kuhn (1); Michele Delli Veneri (5) ((1) University of Hertfordshire; Rafael S. de Souza (1); Robert A. Benjamin (2)

arxiv: 2303.09409 · v1 · pith:XLRF354Tnew · submitted 2023-03-16 · 🌌 astro-ph.SR

Repeating Outbursts from the Young Stellar Object Gaia23bab (= SPICY 97589)

Michael A. Kuhn (1) , Robert A. Benjamin (2) , Emille E. O. Ishida (3) , Rafael S. de Souza (1) , Julien Peloton (4) , Michele Delli Veneri (5) ((1) University of Hertfordshire , (2) University of Wisconsin-Whitewater , (3) Universit\'e Clermont Auvergne

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(4) Universit\'e Paris-Saclay (5) Instituto Nazionale di Fisica Nucleare Section of Naples)

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keywords accretionbrighteningembeddedemissioneventsgaia23baboutburstssource

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The light curve of Gaia23bab (= SPICY 97589) shows two significant ($\Delta G>2$ mag) brightening events, one in 2017 and an ongoing event starting in 2022. The source's quiescent spectral energy distribution indicates an embedded ($A_V>5$ mag) pre-main-sequence star, with optical accretion emission and mid-infrared disk emission. This characterization is supported by the source's membership in an embedded cluster in the star-forming cloud DOBASHI 1604 at a distance of $900\pm45$~pc. Thus, the brightening events are probable accretion outbursts, likely of EX Lup-type.

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Repeating Outbursts from the Young Stellar Object Gaia23bab (= SPICY 97589)

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