J/A+A/412/813ivo://CDS.VizieR/J/A+A/412/813doi:10.26093/cds/vizier.34120813CDSReiners A.Schmitt J.H.M.M.2017-11-28T13:21:36Z2004-01-24T17:48:37ZCDS support team

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

cds-question@unistra.frf-starsWe obtained high quality spectra of 135 stars of spectral types F and later and derived "overall" broadening functions in selected wavelength regions utilizing a Least Squares Deconvolution (LSD) procedure. Precision values of the projected rotational velocity vsini were derived from the first zero of the Fourier transformed profiles and the shapes of the profiles were analyzed for effects of differential rotation. The broadening profiles of 70 stars rotating faster than vsini=45km/s show no indications of multiplicity nor of spottedness. In those profiles we used the ratio of the first two zeros of the Fourier transform q2/q1 to search for deviations from rigid rotation. In the vast majority the profiles were found to be consistent with rigid rotation. Five stars were found to have flat profiles probably due to cool polar caps, in three stars cuspy profiles were found. Two out of those three cases may be due to extremely rapid rotation seen pole on, only in one case (vsini=52km/s) solar-like differential rotation is the most plausible explanation for the observed profile. These results indicate that the strength of differential rotation diminishes in stars rotating as rapidly as vsini>50km/s.2003A&A...412..813Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/412/813CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIII/226 : Rotational Velocities of Stars (Glebocki+ 2000)J/A+A/381/105 : Rotational velocities of A-type stars. I. (Royer+, 2002)J/A+A/393/897 : Rotational velocities of A-type stars II. (Royer+, 2002)J/A+AS/118/545 : Rotational velocities of F dwarfs (Groot+, 1996)J/A+A/398/647 : Rotational velocities of F and G stars (Reiners+, 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/412/813https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/412/813http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/412/813https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/412/813https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/412/813http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/412/813GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/412/813/tablea1 (Projected rotational velocities)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/412/813/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/412/813/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/412/813/tablea1?GETtext/xml+votable180.050000true31.28092377.2813410.0055555555555555566/309 351 353 727 1016 1100 1167 1216 2133 3986 4338 4418 4644 4672 5154 5777 5895 6073 6147 6154 6184 6339 6354 6830 7459 7560 7565 8145 8156 8284 8381 8717 8985 9331 9759 9808 9857 10164 10467 10948 11204 11349 11589 12108 12282 20657 20758 20835 21526 21729 21790 22077 22285 22434 22773 22874 23405 23438 23532 23538 23820 23826 24103 24137 24713 24842 24977 25056 25098 25686 25828 25919 26092 26478 26753 26967 27091 28151 28482 28513 28802 29680 29712 29774 29913 30458 30475 30623 31325 32466 33849 34004 34049 34217 34577 36919 36983 37111 37215 37460 37680 38558 39149 39348 39440 39744 39953 41136 41412 41523 41574 41678 41882 42091 42198 42486 42544 42555 42622-42623 42891 42899 43074 43317 43498 43507 43608 43688 43850 44258 44585 45029 47299 47598 47825https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/412/813?format=asciiOpticaldefaultJ/A+A/412/813/tablea1Projected rotational velocitiesONameOther namemeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHDHenry Draper Catalogue (Cat. <III/135>) numbermeta.id;meta.mainintHRBright Star Catalogue (Cat. <V/50>) numbermeta.id;meta.mainintNameNamemeta.idcharB-VB-V colour index (1)magphot.color;em.opt.B;em.opt.Vfloatl_vsiniLimit flag on vsinimeta.code.errorcharvsiniProjected rotational velocitykm/sphys.veloc.rotatfloate_vsiniError on vsinikm/sstat.errorfloatq2/q1? Ratio of second to first Fourier zerosstat.fit.paramfloatnullablee_q2/q1? Error of q2/q1stat.errorfloatnullableNoteFlag on shape (2)meta.notecharSimbadSimbad column added by the CDSmeta.refchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main