000003939 001__ 3939
000003939 005__ 20190128145344.0
000003939 037__ $$aSCART-2019-0079
000003939 100__ $$aIrrgang, A.
000003939 245__ $$aThe evolved slowly pulsating B star 18 Peg: A testbed for upper main sequence stellar evolution
000003939 260__ $$c2017
000003939 520__ $$aThe bright B3 III giant star 18 Peg turns out to be a slowly pulsating B star in a long period binary with a main-sequence star or a neutron star as companion. Given that it is one of the most evolved members of this class of massive pulsating stars, an accurate determination of the location of 18 Peg in the Hertzsprung-Russell (H-R) diagram would provide a lower limit on the width of the upper main sequence and hence would reveal information about the efficiency of the convective overshooting. We explain why long-term space-based observations are needed and how BRITE could play a crucial role in the gathering of the mandatory ingredients to test the models of the upper main sequence evolution. 
000003939 594__ $$aNO
000003939 700__ $$aDe Cat, P.
000003939 700__ $$aTkachenko, A.
000003939 700__ $$aDeshpande, A.
000003939 700__ $$aMoehler, S.
000003939 700__ $$aMugrauer, M.
000003939 700__ $$aJanousch, D.
000003939 773__ $$c145-150$$pProceedings of the Polish Astronomical Society$$v5$$y2017
000003939 8560_ $$fpeter.decat@observatoire.be
000003939 85642 $$ahttps://www.pta.edu.pl/pliki/proc/vol5/v5p145.pdf
000003939 905__ $$apublished in
000003939 980__ $$aNONREF