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Large Binocular Telescope observations reveal recurrent EXor bursts in young stellar object Gaia23bab

Published on:

2 April 2024

Primary Category:

Solar and Stellar Astrophysics

Paper Authors:

T. Giannini,

E. Schisano,

P. Abraham,

S. Antoniucci,

K. Biazzo,

F. Cruz-Saenz de Miera,

E. Fiorellino,

M. Gangi,

A. Kospal,

M. Kuhn,

E. Marini,

Z. Nagy,

D. Paris

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Key Details

Gaia23bab underwent 2 mag bursts in 2013, 2017 & 2023 typical of EXor variables

Bursts enabled ~2x more mass accumulation than if source was quiescent

Gaia23bab is a <1 Myr old, G3-K0 Class II source

Its emission lines indicate accretion properties consistent with EXors

EXors may be more efficient than T Tauris at accreting mass, even when quiescent

AI generated summary

Large Binocular Telescope observations reveal recurrent EXor bursts in young stellar object Gaia23bab

The young stellar object Gaia23bab underwent large 2 magnitude bursts in 2013, 2017 and 2023 that are typical of EXor variables. These bursts enabled the accumulation of about twice as much mass than if Gaia23bab had remained quiescent. Analysis indicates Gaia23bab is a G3-K0, <1 Myr old Class II source with properties consistent with known EXors, though it may be even more efficient at accreting mass.

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