[en] We present an analysis of ongoing optical spectroscopic monitoring of the Yellow Hypergiant Rho Cas between 2014 and 2024, with an observation cadence of 7 days since 2018. We discuss the temporal line profile variability observed in Balmer Halpha and the variability of the stellar wind in selected photospheric absorption lines of Fe I and Si II. We combine accurate measurements of various line parameters with multi-band photometric observations during this period and present an analysis of the pulsation periods in this notorious hypergiant star.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Quandt, C.
Lobel, A.
Hold, S.
Gebahrd, G.
Hutsemekers, Damien ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Space sciences, Technologies and Astrophysics Research (STAR)
Martin, J.
Kremser, T.
Vollmann, T.
Language :
English
Title :
Ten years of spectroscopic monitoring of the Yellow Hypergiant rho Cas
