A Long-term Quasiperiodic Disk Around the Be Star QR Vul
Year: 2025
Type: article
Abstract: Be stars are non-supergiant B stars that rotate rapidly and show evidence of an equatorial decretion disk. The disks are variable in time and strength, but are usually unpredictable. We report on spectra from the Be Star Spectra archive that indicate that the Be star QR Vul has a quasi-periodic property in its disk strength, where the largest disk phases seem to be modulated on a ∼4.36 yr cycle. We speculate on two possible causes.
Source: Research Notes of the AAS
Institutions: Embry-Riddle Aeronautical University Prescott Arizona Campus, Embry–Riddle Aeronautical University, Centre National de la Recherche Scientifique, Université Paris Cité, Université Paris Sciences et Lettres, Observatoire de Paris, Sorbonne Université, CY Cergy Paris Université, DTU Space, Technical University of Denmark
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: hybrid
OpenAlex ID: W4414383135