PreprintCC BY 4.0arXiv
Tidally perturbed pulsations in OO Dra
Abstract
We perform a pulsation analysis of OO Dra using Light Curve data from TESS and present the first identification of six dipole modes as doublets from the primary star in OO Dra. The phases and amplitudes of these pulsation modes were analytically reconstructed. Among the six identified doublets, four are pulsating in Y10x mode with pulsation axis along the tidal axis, and two in Y10y with a pulsation axis orthogonal to tidal axis and the angular momentum axis. Our findings suggest that the primary star in a non-synchronized, post mass-transfer OO Dra could be a tidally tilted δ Scuti pulsator.
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BibTeX
@misc{parthasarathy2026tidally,
title = {{Tidally perturbed pulsations in OO Dra}},
author = {Niveditha Parthasarathy and Mikhail Kovalev and Randa Asa'd},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.08046},
eprint = {2609.08046},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.08046},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Tidally perturbed pulsations in OO Dra
AU - Niveditha Parthasarathy
AU - Mikhail Kovalev
AU - Randa Asa'd
PY - 2026
DA - 2026/09/07
PB - arXiv
DO - 10.48550/arxiv.2609.08046
UR - https://arxiv.org/abs/2609.08046
AB - We perform a pulsation analysis of OO Dra using Light Curve data from TESS and present the first identification of six dipole modes as doublets from the primary star in OO Dra. The phases and amplitudes of these pulsation modes were analytically reconstructed. Among the six identified doublets, four are pulsating in Y_10x mode with pulsation axis along the tidal axis, and two in Y_10y with a pulsation axis orthogonal to tidal axis and the angular momentum axis. Our findings suggest that the primary star in a non-synchronized, post mass-transfer OO Dra could be a tidally tilted δ Scuti pulsator.
ER -