Julieta Sánchez AriasSergey Karpov

Central stars of newly discovered infrared nebulae: eruptive Be stars PY Gem and HD 253659

The presence of a nebula around massive hot stars often works as an indicator that the object is either in an advanced evolutionary stage or a rare product of close binary interaction. Here, we focus on two Be stars – PY Gem and HD 253659 – whose nebulae were detected with the Wide-field Infrared Survey Explorer. We...