000005286 001__ 5286
000005286 005__ 20210209144425.0
000005286 037__ $$aSCART-2021-0066
000005286 100__ $$aIrrgang, A.
000005286 245__ $$aThe slowly pulsating B-star 18 Peg: A testbed for upper main sequence stellar evolution
000005286 260__ $$c2020
000005286 520__ $$aThe predicted width of the upper main sequence in stellar evolution models depends on the empirical calibration of the convective overshooting parameter. Despite decades of discussions, its precise value is still unknown and further observational constraints are required to gauge it. In 2016, Irrgang et al. discovered that the mid B-type subgiant 18 Peg is one of the most evolved members of the rare class of slowly pulsating B-stars and, thus, bears some potential to derive a tight lower limit for the width of the upper main sequence. Here we report on new photometric and spectroscopic analyses based on follow-up observations obtained with the BRITE-Heweliusz satellite and the HERMES spectrograph, which, among others, led to a revised oscillation frequency as well as to an updated radial-velocity curve of this single-lined spectroscopic binary system.
000005286 594__ $$aNO
000005286 6531_ $$aBinaries: spectroscopic
000005286 6531_ $$aStars: early-type
000005286 6531_ $$aStars: individual: 18 Peg
000005286 6531_ $$aStars: oscillations 
000005286 700__ $$aDe Cat, P.
000005286 700__ $$aPigulski, A.
000005286 700__ $$aHandler, G.
000005286 700__ $$aTkachenko, A.
000005286 773__ $$c275-280$$pProceedings of the International Conference on Stars and their Variability Observed from Space$$y2020
000005286 8560_ $$fpeter.decat@observatoire.be
000005286 85642 $$ahttps://ui.adsabs.harvard.edu/abs/2020svos.conf..275I/abstract
000005286 8564_ $$s1113656$$uhttp://publi2-as.oma.be/record/5286/files/Irrgang2020_SVOSconf_275.pdf
000005286 8564_ $$s2939$$uhttp://publi2-as.oma.be/record/5286/files/Irrgang2020_SVOSconf_275.jpg?subformat=icon-180$$xicon-180
000005286 8564_ $$s3034$$uhttp://publi2-as.oma.be/record/5286/files/Irrgang2020_SVOSconf_275.gif?subformat=icon$$xicon
000005286 905__ $$apublished in
000005286 980__ $$aNONREF