J/A+A/542/L32ivo://CDS.VizieR/J/A+A/542/L32doi:10.26093/cds/vizier.35429032CDSKraus M.Tomic S.Oksala M.E.Smole M.2012-08-15T14:34:03Z2012-06-07T08:15:47ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frsupergiant-starsob-starsspectroscopyPhotospheric lines of B-type supergiants show variability in their profile shapes. In addition, their widths are much wider than can be accounted for purely by stellar rotation. This excess broadening is often referred to as macroturbulence. Both effects have been linked to stellar oscillations, but B supergiants have not been systematically searched yet for the presence of especially short-term variability caused by stellar pulsations. We have started an observational campaign to investigate the line profile variability of photospheric lines in a sample of Galactic B supergiants. These observations aim to improve our understanding of the physical effects acting in the atmospheres of evolved massive stars.2012A&A...542L..32Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/542/L32CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/542/L32https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/542/L32http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/542/L32https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/542/L32https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/542/L32http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/542/L32GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/542/L32/listList of spectrarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFileNameName of the spectrum file in subdirectory spectrameta.id;meta.filecharsp1plot this spectrummeta.ref.urlcharLineLine name (HeI 6678 or SiII) (1)meta.id;spect.linecharDateObservation datetime.epoch;obsnullablespplot all spectrameta.ref.urlchar