[en] First massive star reported to display Balmer emission lines, γ Cas has long served as a prototype for the Be category. Its bright and hard X-ray emission, however, makes it atypical amongst Be stars. In 2024-2025, an optical monitoring was undertaken in parallel to an X-ray campaign. Here we report on the results of this monitoring and we also derived refined ephemerides for the system combining > 104 d of radial velocity data.
Research Center/Unit :
STAR - Space sciences, Technologies and Astrophysics Research - ULiège
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Nazé, Yaël ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE)
Rauw, Grégor ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Groupe d'astrophysique des hautes énergies (GAPHE)
