The Young Binary DQ Tau Produces Another X-ray Flare Near Periastron
Konstantin V. Getman (1), Vitaly V. Akimkin (2), Nicole Arulanantham, (3), Agnes Kospal (4,5,6), Dmitry A. Semenov (5), Grigorii V., Smirnov-Pinchukov (5), Sierk E. van Terwisga (5) ((1) Pennsylvania State, University, (2) INASAN, (3) Space Telescope Science Institute
TL;DR
This study reports on repeated X-ray flares from the young binary DQ Tau near periastron, providing insights into stellar radiation effects on circumbinary disk chemistry.
Contribution
It presents multi-wavelength observations confirming recurrent flares near periastron in DQ Tau, highlighting its value for studying flare impacts on disk ion chemistry.
Findings
Repeated X-ray flares observed near periastron
Flares influence gas-phase ion chemistry in disks
Supports DQ Tau as a laboratory for flare studies
Abstract
This work is part of a multi-wavelength program to study the effects of X-ray/UV/optical stellar radiation on the chemistry of the circumbinary disk around the young high-eccentricity binary DQ Tau. ALMA observations for near/around December 5, 2021 periastron were postponed due to bad weather, but supporting Swift-XRT-UVOT TOO observations were successful. These Swift observations along with previous X-ray-optical-mm data show that DQ Tau keeps exhibiting powerful flares near periastron, offering a unique laboratory for studies of flare effects on the gas-phase ion chemistry in protoplanetary disks.
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