Evidence for Binarity in the Luminous Blue Variable Candidate Hen 3-519
Abstract
Luminous Blue Variables (LBVs) are evolved massive stars that undergo extreme mass loss, influencing their eventual fate as neutron stars or black holes. Among them, Hen 3-519 stands out due to its unusual spectral features. This study presents new polarimetric observations of Hen 3-519, revealing a distinctive loop pattern in the Stokes Q-U diagram, which strongly suggests the presence of a binary companion. Identifying binaries among LBVs is important for understanding how these massive stars evolve. By analyzing archival linear polarization data, we explore the possible orbital properties of Hen 3-519’s companion and its role in shaping the surrounding stellar wind. These findings contribute to the growing evidence that binary interactions play a significant role in the evolution of massive stars, particularly in the transition from LBVs to Wolf-Rayet stars.
Start Time
16-4-2025 1:30 PM
End Time
16-4-2025 2:30 PM
Room Number
219
Presentation Type
Oral Presentation
Presentation Subtype
UG Orals
Presentation Category
Health and STEM
Faculty Mentor
Richard Ignace
Evidence for Binarity in the Luminous Blue Variable Candidate Hen 3-519
219
Luminous Blue Variables (LBVs) are evolved massive stars that undergo extreme mass loss, influencing their eventual fate as neutron stars or black holes. Among them, Hen 3-519 stands out due to its unusual spectral features. This study presents new polarimetric observations of Hen 3-519, revealing a distinctive loop pattern in the Stokes Q-U diagram, which strongly suggests the presence of a binary companion. Identifying binaries among LBVs is important for understanding how these massive stars evolve. By analyzing archival linear polarization data, we explore the possible orbital properties of Hen 3-519’s companion and its role in shaping the surrounding stellar wind. These findings contribute to the growing evidence that binary interactions play a significant role in the evolution of massive stars, particularly in the transition from LBVs to Wolf-Rayet stars.