Spectral analysis of AmFm stars observed with HRS SALT

Chemically peculiar (CP) stars usually show significantly enhanced or depleted abundances of chemical elements compared to solar abundance. In CP stars of AmFm type, an underabundance of Ca and Sc, and an enhanced overabundance of other metals is observed everywhere in the stellar atmosphere. Some known AmFm stars observed by TESS clearly show pulsations that one usually finds in d Scuti stars. High-resolution spectra of some AmFm stars have been recently acquired with ESPaDOnS (CFHT) and HRS (SALT) and will be used to carry out abundance analysis. This research will result in a significant amount of new data on average abundances for AmFm stars. It will help validate the stellar classification of the studied targets and origin of the observed pulsations. This internship is a part of an extensive collaboration of the stellar astrophysics group of Université de Moncton aimed to study stratification of chemical abundance in CP stars and refine their classification. This research will help our group to establish a solid collaboration with the colleagues from Poland and other countries of the European Union.

Faculty Supervisor:

Viktor Khalack

Student:

Partner:

University of Wroclaw

Discipline:

Physics

Sector:

Education

University:

Université de Moncton

Program: