J/A+A/669/A60ivo://CDS.VizieR/J/A+A/669/A60doi:10.26093/cds/vizier.36690060CDSPawlak M.2023-01-30T11:34:00Z2023-01-09T07:46:33ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsgiant-starsvariable-starsvisible-astronomyThe long secondary period (LSP) phenomenon, which is commonly observed in pulsating red giants, has not been detected in any Mira yet. The goal of this paper is to verify, if there is a physical reason for this or if it is simply an observational bias. The OGLE-III Sample of Long Period Variables in the Large Magellanic Cloud, containing 1663 Miras, is used to perform a search for secondary periodicity in these objects and identify candidates for the long secondary period stars based on the location on the period-luminosity diagram. Out of 1663 Miras, 108 were identified as potential candidates, with variability broadly consistent with LSP. This makes 7% of the whole Mira sample in the Large Magellanic Cloud. Most, if not all of the Mira LSP candidates are C-rich stars. The results of this analysis suggest that Miras may exhibit long secondary periods. However, the long-term variability can also be related to period and amplitude irregularities that Miras are known to exhibit. Further study will be necessary to draw a definitive conclusion.2023A&A...669A..60Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/669/A60CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AcA/59/239 : VI light curves of LMC long-period variables (Soszynski+, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/669/A60https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/669/A60http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/669/A60https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/669/A60https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/669/A60http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/669/A60GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/669/A60/catalog (The list of the Mira LSP candidates (table 1))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/669/A60/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/669/A60/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/669/A60/catalog?GETtext/xml+votable180.050000true67.7636667-69.57091670.0055555555555555565/8263 8269 8272 8274 6/33047 33080 33084-33085 33092-33094 33100-33102 33120-33121 33124 33128 37506https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/669/A60?format=asciiOpticaldefaultJ/A+A/669/A60/catalogThe list of the Mira LSP candidates (table 1)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDThe OGLE id from Soszynski et al. (2009AcA....59..239S, Cat. J/AcA/59/239), OGLE-LMC-LPV-NNNNNmeta.id;meta.maincharRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainPpulPulsational period from Soszynski et al. (2009AcA....59..239S, Cat. J/AcA/59/239)dtime.periodfloatPlspPuttative long secondary perioddtime.periodfloatSimbadSimbad column added by the CDSmeta.ref.urlchar