J/A+A/531/A143ivo://CDS.VizieR/J/A+A/531/A143doi:10.26093/cds/vizier.35310143CDSDiaz C.G.Gonzalez J.F.Levato H.Grosso M.2017-11-10T11:16:02Z2011-11-28T10:34:06ZCDS support team

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

cds-question@unistra.frWe propose a method for measuring the projected rotational velocity vsini with high precision even in spectra with blended lines. Though not automatic, our method is designed to be applied systematically to large numbers of objects without excessive computational requirement. We calculated the cross correlation function (CCF) of the object spectrum against a zero-rotation template and used the Fourier transform (FT) of the CCF central maximum to measure the parameter vsini taking the limb darkening effect and its wavelength dependence into account. The procedure also improves the definition of the CCF base line, resulting in errors related to the continuum position under 1% even for vsini=280km/s. Tests with high-resolution spectra of F-type stars indicate that an accuracy well below 1% can be attained even for spectra where most lines are blended.2011A&A...531A.143Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/531/A143CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/50 : Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)III/135 : Henry Draper Catalogue and Extension (Cannon+ 1918-1924; ADC 1989)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/531/A143https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/531/A143http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/531/A143https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/531/A143https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/531/A143http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/531/A143GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/531/A143/table1 (Results for 251 A1-A5 stars from the Bright Star Catalogue in the southern hemisphere)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/531/A143/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/531/A143/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/531/A143/table1?GETtext/xml+votable180.050000true1.9454147-22.50856030.0055555555555555566/12355 16587 16611 16629 16689 16942 17085 17691 18210 18737 18766 18781 19092 19192 19318 19386 19590 20507 20702 20835 20940 21036 21076 21165 21289 21388 21399 21462 21526 21538 21815 21833 22104 22114 22154 22576 22759 22919-22920 23071 24592 24615 24645 24782 24796 24918 25019 25259 25272 25414 25789 25873 26024 26145 26276 26736 26765 26798 26806 27010 27282 28741 28987 29091 29242 29374 29572 29660-29661 30274 30419 30505 30623 30872 30897 30914 31121 31154 31745 32288 33191 33193 33316 33361 33547 33694 33722 34456 34536 34607 34624 34680 34724 34789 34799 35061 35149 35226 35293 35440 35723 35842 35973 36049 36082 36096 36130 36245 36351 36691 36757 36850-36851 36886 37063 37108 37154 37290 37293 37298 37312 37338 37463 37723 37732 37765 37957 38074 38087 38296 38374 38489 38588 38722 38742 38749 38831 38833 38893 39137 39204 39254 39261 39364 39372 39519 39608 39611 39640 39768 39860 40035 40133 40136 40162 40208 40465 40477 40606 40652 40659 40782 40826 40838 40859 40882 40906 40984 41018 41352 41361 41371 41446 41471 41759 41939 41942 42047 42072 42406 42434 42465 42579 42678 42719 42861 43127 43130 43141 43165 43226 43365 43469 43539 43809 43959 43971 44227 44304 44441 44454 44544 44643 44768 44833 45041 45144 45253 45308 45363 45374 45672 45746 45784 45835 45927 46096 46217 46436 46507 46510 46800 46830 46845 46901 46939 46982 47031 47188 47518 47595 47714 47740 47769 47775 47777 47796 47820 48037 48088 48124 48186 48210 48709 48872 48876 49047 49049https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/531/A143?format=asciiOpticaldefaultJ/A+A/531/A143/table1Results for 251 A1-A5 stars from the Bright Star Catalogue in the southern hemisphereHDHD number, Cat. <III/135>meta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint<vsini>Mean rotational velocitykm/sphys.veloc.rotatfloaterr1First method rms uncertainty on <vsini> (1)km/sstat.error;stat.fitfloaterr2Second method rms uncertainty on <vsini> (2)km/sstat.error;stat.fitfloatSpTypeMK spectral typesrc.spTypecharSimbadSimbad column added by the CDSchar_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