Discovery of the First-Ever Recorded Fading Event of the Wolf-Rayet Star WR 59
Abstract
This paper presents the visual discovery of the first-ever recorded fading event of the Wolf-Rayet star WR 59. Historically documented as a stable star with an approximate magnitude of 13.9, the star underwent a sudden major decline during high-cadence visual monitoring in May 2021. On 11 May 2021 (JD 2459346), I observed the star plunge 1.3 magnitudes to a deep minimum of magnitude 15.2. It remained in this faded state for roughly 1 day before undergoing a structured 14-day recovery back to its baseline. This episode was independently verified by NASA's Transiting Exoplanet Survey Satellite (TESS) during Sector 38. The satellite's calibrated data stream confirms that the timing, structure, and recovery of the fade matched the ground-based observations. While a close 11.7 V companion star masked the true depth of the drop for automated large-pixel survey pipelines, this event firmly establishes WR 59 as an active dust-producing system. It demonstrates how high-magnification visual monitoring can successfully resolve crowded stellar fields.
Related
- Visual Discovery of Fading Events in the Wolf-Rayet Star WR 80
- AT2019aalc: An obscured tidal disruption event candidate in an active galactic nucleus revealed by its first flare?
- The First Model-independent Upper Bound on Microlensing Signature of the Highest-mass Binary Black Hole Event GW231123
- AT2019aalc: An obscured tidal disruption event candidate in an active galactic nucleus revealed by its first flare?
- First Pre-peak Ultraviolet Spectrum of a Tidal Disruption Event: A Fast Outflow Revealed Prior to Maximum Light in TDE2025aarm
BibTeX
@misc{stubbings2026discovery,
title = {{Discovery of the First-Ever Recorded Fading Event of the Wolf-Rayet Star WR 59}},
author = {Rod Stubbings},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.00630},
eprint = {2609.00630},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.00630},
}
RIS
TY - UNPB
TI - Discovery of the First-Ever Recorded Fading Event of the Wolf-Rayet Star WR 59
AU - Rod Stubbings
PY - 2026
DA - 2026/09/01
PB - arXiv
DO - 10.48550/arxiv.2609.00630
UR - https://arxiv.org/abs/2609.00630
AB - This paper presents the visual discovery of the first-ever recorded fading event of the Wolf-Rayet star WR 59. Historically documented as a stable star with an approximate magnitude of 13.9, the star underwent a sudden major decline during high-cadence visual monitoring in May 2021. On 11 May 2021 (JD 2459346), I observed the star plunge 1.3 magnitudes to a deep minimum of magnitude 15.2. It remained in this faded state for roughly 1 day before undergoing a structured 14-day recovery back to its baseline. This episode was independently verified by NASA's Transiting Exoplanet Survey Satellite (TESS) during Sector 38. The satellite's calibrated data stream confirms that the timing, structure, and recovery of the fade matched the ground-based observations. While a close 11.7 V companion star masked the true depth of the drop for automated large-pixel survey pipelines, this event firmly establishes WR 59 as an active dust-producing system. It demonstrates how high-magnification visual monitoring can successfully resolve crowded stellar fields.
ER -