J/A+A/542/A89ivo://CDS.VizieR/J/A+A/542/A89doi:10.26093/cds/vizier.35420089CDSPaunzen E.Netopil M.Rode-Paunzen M.Handler G.Bozic H.Ruzdjak D.,Sudar D.2017-12-05T05:10:29Z2012-06-21T09:48:36ZCDS support team

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

cds-question@unistra.frap-starsvariable-starsccd-photometryThe rapidly oscillating Ap (roAp) stars exhibit short time scale photometric and/or radial velocity variations, which are most important to test current pulsation models as well as our assumptions of the atmospheric structure characteristics. In addition, their chemical peculiarity makes them very interesting for probing stellar formation and evolution in the presence of a global magnetic field. To date, only a limited number of about 45 roAp stars are known. In order to increase the sample, we obtained photometric time series of 20 good roAp candidates to search for pulsations. We present the time series analysis of about 60 hours of CCD photometry taken at the 1 meter Austrian-Croatian Telescope (Hvar Observatory) and derive effective temperatures for the programme objects. The upper amplitude limits of the Fourier spectra are typically below 2mmag in Bessell B with one good candidate for follow-up observations to find possible pulsation. In addition, we present a list of further roAp candidates, worth to be (re)investigated.2012A&A...542A..89Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/542/A89CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIII/260 : General Catalogue of Ap and Am stars (Renson+ 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/542/A89https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/542/A89http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/542/A89https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/542/A89https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/542/A89http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/542/A89GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/542/A89/stars (Studied stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/542/A89/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/542/A89/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/542/A89/stars?GETtext/xml+votable180.050000true18.6666733.001390.0055555555555555566/2229 12917 13260 13275-13276 13299 13812 13989 14035 14241 14252 14301 14304 14502-14503 14550 14640 14736 32621 32656https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/542/A89?format=asciiOpticaldefaultJ/A+A/542/A89/starsStudied starsONameOther namemeta.idcharDEJ2000Declination (J2000)pos.eq.dec;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRensonRenson identification number (Cat. III/260)meta.id;meta.mainintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainLCdisplay light curvemeta.ref.urlcharFile1First photometry table, in "phot" subdirectoryphot;meta.tablecharFile2Second photometry table, in "phot" subdirectoryphot;meta.tablecharSimbadSimbad column added by the CDSmeta.refchar