J/AJ/141/53ivo://CDS.VizieR/J/AJ/141/53doi:10.26093/cds/vizier.51410053CDSSchmidt E.G.Rogalla D.Thacker-Lynn L.2017-10-12T13:00:18Z2012-08-15T11:28:20ZCDS support team

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

cds-question@unistra.frvariable-starsspectroscopyWe present low-resolution spectra for variable stars in the Cepheid period range from the ROTSE-I Demonstration Project and the All Sky Automated Survey, some of which were previously identified as type II Cepheid candidates. We have derived effective temperatures, gravities, and metallicities from the spectra. Based on this, three types of variables were identified: Cepheid strip stars, cool stars that lie along the red subgiant and giant branch, and cool main-sequence stars. Many fewer type II Cepheids were found than expected and most have amplitudes less than 0.4mag. The cool variables include many likely binaries as well as intrinsic variables. Variation among the main-sequence stars is likely to be mostly due to binarity or stellar activity.2011AJ....141...53Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/141/53CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/133/665 : Photometry of type II Cepheid candidates (Schmidt+, 2007)J/AJ/137/4598 : VR light curve of ASAS-North Cepheids (Schmidt+, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/141/53https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/141/53http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/141/53https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/141/53https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/141/53http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/141/53GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/141/53/stars (Star list)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/141/53/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/141/53/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/141/53/stars?GETtext/xml+votable180.050000true251.2608758.00963890.0055555555555555566/29 70 102 158 280 331 375 390 502 619 659 729 798 1411 1421 1432 1556 1808 1829 1938 2075 2087 2093 2186 2684 2799 3022 3052 3060 3131 3276 3285 3459 3662 4252 4266 4275 4376 4392 4617 4619 4641 4659 4698 4766 4813 4816 4820 4821 5009 6178 6276 6472 6489 6825 8292 8365 8442 8452 8458 8555 8558 8571 8734 8857 8890 8938 8950 8951 8988 8989 9083 9124 9186 9194 9266 9300 9301 9365 9381 9431 9447 9461 9466 9480 9494 9495 9497 9505 9545 9562 9569 9571 9605 9622 9669 9672 9676 9712 9763 9765 9780 9794 10038 10039 10047 10055 10060 10062 10307 10345 10356 10379 10382 10401 10439 10464 10476 10497 10501 10528 10534 10803 10811 10816 12321 12424 12450 12615 12688 12715 13814 14321 14324 14328 14767 14884 14892 14921 14927 14941 14949 14958 14979 15004 15010 15027 15043 15046 15070 15156 15178 15232 15272 15461 15698 17775 17863 17883 17969 17994 18041 18127 18176 18283 18341 18348 18405 18413 18769 19285 19415 19480 19577 19580 19665 19666 19701 19791 19805 19859 19860 19896 19911 19912 21491 21845 21889 21898 21901 21954 21964 21979 22114 22149 22180 22207 22296 22331 22377 22385 22394 22396 22510 22830 22844 22896 22957 22979 23000 23007 23039 23096 23170 23195 23234 23332 23339 23686 23720 23726 23727 23841 23925 24021 24059 24062 24094 24110 24117 24122 24153 24229 24357 25051 25444 25842 25954 25967 26029 26161 26257 26280 26289 26401 26558 26879 27089 27113 27223 27362 27457 27671 27710 27738 27871 27889 27911 27937 27949 27951 28173 28217 28541 28664 29758 30108 30181 30553 30646 31120 31173 31208 31229 31281 31339 31351 31356 31375 31482 31496 31512 31521 31524 31526 31527 31530 31581 31585 31589 31591 31600 31613 31650 31799 31828 31862 31874 31905 31910 31913 31918 31946 31966 31971 32012 32135 32191 32251 32287 32324 32334 32352 32354 32356 32387 32390 32423 32427 32441 32447 32460 32462 32471 32497 32531 32558 32566 32567 32638 32643 32695 32699 32703 32713 32720 32722 32733 32734 32752 36705 44542 44786 45046 48880https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/141/53?format=asciiOpticaldefaultJ/AJ/141/53/starsStar listSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar namemeta.id;meta.maincharprimaryNobsNumber of spectra (in table2)meta.numberintnullableRAJ2000SIMBAD right ascension (J2000)pos.eq.ra;meta.mainDEJ2000SIMBAD declination (J2000)pos.eq.dec;meta.mainJ/AJ/141/53/table1Log of observations for 323 starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTypeStar type (Classical Cepheids, Type II Cepheids, Other Stars or Group [1-4]) (1)src.classcharStarStar namemeta.id;meta.maincharPerPeriod of variationdtime.perioddoubleAmpAmplitude of variationmagarith.rate;phot.magfloatHJDHeliocentric Julian Date of mid-exposure minus 2450000 (HJD-2450000)dtime.epochfloatTeff? Effective temperatureKphys.temperature.effectiveintnullablelog(g)? Logarithm of surface gravitylog(cm.s**-2)phys.gravityfloatnullable[Fe/H]? Metallicityphys.abund.ZfloatnullableE(V-R)? The (V-R) color excessmagphot.color.excessfloatnullableNotes[ab] References to notes (2)meta.notecharJ/AJ/141/53/table2LICK/IDS indices for 353 starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar namemeta.id;meta.maincharHJDHeliocentric Julian Date (1)dtime.epochfloatCN1LICK/IDS CN_1_ indexmagspect.indexfloatCN2LICK/IDS CN_2_ indexmagspect.indexfloatCa4227LICK/IDS Ca4227 index0.1nmmeta.code;spect.indexfloatG4300LICK/IDS G4300 index0.1nmmeta.code;spect.indexfloatFe4383LICK/IDS Fe4383 index0.1nmmeta.code;spect.indexfloatCa4455LICK/IDS Ca4455 index0.1nmmeta.code;spect.indexfloatFe4531LICK/IDS Fe4531 index0.1nmmeta.code;spect.indexfloatFe4668LICK/IDS Fe 4668 index0.1nmmeta.code;spect.indexfloatHbLICK/IDS H{beta} index0.1nmspect.index;em.line.HbetafloatFe5015LICK/IDS Fe5015 index0.1nmmeta.code;spect.indexfloatMg1LICK/IDS Mg_1_ indexmagspect.indexfloatMg2LICK/IDS Mg_2_ indexmagspect.indexfloatMgbLICK/IDS Mg_b_ index0.1nmmeta.code;spect.indexfloatFe5270LICK/IDS Fe5270 index0.1nmmeta.code;spect.indexfloatFe5335LICK/IDS Fe5335 index0.1nmmeta.code;spect.indexfloatFe5406LICK/IDS Fe5406 index0.1nmmeta.code;spect.indexfloatFe5709LICK/IDS Fe5709 index0.1nmmeta.code;spect.indexfloatFe5782LICK/IDS Fe5782 index0.1nmmeta.code;spect.indexfloatNaDLICK/IDS Na index0.1nmmeta.code.multip;spect.indexfloatTiO1LICK/IDS TiO_1_ index0.1nmmeta.code;spect.indexfloatTiO2LICK/IDS TiO_2_ index0.1nmmeta.code;spect.indexfloatHdALICK/IDS H{delta}_A_ index0.1nmspect.indexfloatHgALICK/IDS H{gamma}_A_ index0.1nmspect.indexfloatHdFLICK/IDS H{delta}_F_ index0.1nmspect.indexfloatHgFLICK/IDS H{gamma}_F_ index0.1nmspect.indexfloatHaLICK/IDS H{alpha} index0.1nmspect.index;em.line.Halphafloat