J/MNRAS/416/2477ivo://CDS.VizieR/J/MNRAS/416/2477doi:10.26093/cds/vizier.74162477CDSWraight K.T.White G.J.Bewsher D.Norton A.J..2024-07-15T20:16:42Z2012-06-11T09:26:19ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsccd-photometryThe feasibility of using data from the NASA STEREO mission for variable star and asteroseismology studies has been examined. A data analysis pipeline has been developed that is able to apply selected algorithms to the entire database of nearly a million stars to search for signs of variability. An analysis limited to stars of magnitude 10.5 has been carried out, which has resulted in the extraction of 263 eclipsing binaries (EBs), of which 122 are not recorded as such in the SIMBAD online database. The characteristics of the STEREO observations are shown to be extremely well-suited to variable star studies with the ability to provide continuous phase coverage for extended periods as well as repeated visits that allow both short and long term variability to be observed. This will greatly inform studies of particular stars, such as the pre-cataclysmic variable V471 Tau, as well as entire classes of stars, including many forms of rotational variability. The high-precision photometry has also revealed a potentially substellar companion to a bright (R=7.5mag) nearby star (HD 213597), detected with 5 sigma significance. This would provide a significant contribution to exoplanet research if follow-up observations ascertain the mass to be within the planetary domain. Some particularly unusual EBs from the recovered sample are discussed, including a possible reclassification of a well-known star as an EB rather than a rotational variable (HR 7355) and several particularly eccentric systems, including very long-period EBs.2011MNRAS.416.2477Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/416/2477CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/416/2477https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/416/2477http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/416/2477https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/416/2477https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/416/2477http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/416/2477GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/416/2477/tablea1 (Statistics for 263 EBs and the significance of their detection by different algorithms)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/416/2477/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/416/2477/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/416/2477/tablea1?GETtext/xml+votable180.050000true58.30630.19150.005555555555555556STEREO6/55 90 183 185 325 374 436 461 475 478 504 510 528 634 678 716 833 837 1040 1095 1163 1167 1187 1193 4244 4263 4327 4488 4525 4661 4715 4804 4907 4920 6222 6291 6312 6657 6664 6666 17066 17139 17290 17307 17310 17312 17323 17853 17892 17953 17982 18016 18026 18309 18366 18450 18463 18470 18480 18499 18601 18671 18722 18856 18889 18989 19201 19482 19486 19517 19530-19531 19556 19598 22359 22517 22520 23483 23520 23761 23765 23800 23834 23844 23917 23928 23963 23983 23985 24011 24059 24158 24183 24238 24256-24257 24289 24297 24311 24333 24355 24360 24377-24378 24380 24386 24391 24398 24415 24425 24440 24465-24466 24472 24948 25074 25534 25561 25601 25614 25737 25741 25990 26125 26179 26231 26368 26926-26927 26940 26976 27017 27029 27041 27065 27070 27074 27076 27079 27116 27366 27437 27481 27496 27705 27826 28208 28778 28799 28810 28831 28833 28849 28882 28892 28896 28915-28916 28989 29029 29035 29101 29111 29116 29147 29151 29209 29298 29318 29372 29374 29378 29443 29456 29460 29469 29481 29486 29505 29701 29715 29730 29760 30765 42489 42493 42877 44385 44400 44403 44409 44445 44514 44521 44536 44541 44701 44716 44769 44772 44795 44853 44872 44993 45034 47871 47966 47982 47996 48013 48015 48032 48039-48040 48061 48065 48072 48086 48105 48108 48310 48367 48369 48414 48442 48471 48505 48518-48519 48529 48539 48543 48561 48587 48589 48641 48782 48833 48862 48874 48883 48888 48896 48905 48919 48933-48934 48939 48941 48946 48972 48974 49038 49042 49056 49060 49064https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/416/2477?format=asciiOpticaldefaultJ/MNRAS/416/2477/tablea1Statistics for 263 EBs and the significance of their detection by different algorithmsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainPEDPrimary Eclipse Depthmagphot.magfloatPerPerioddtime.perioddoubleWmagWeighted mean magnitude (4)magphot.mag;em.opt.RdoubleBLSBox-Least-Squares variability index (Kovacs et al., 2002A&A...391..369K)src.var.indexdoubleSIDStetson variability indexsrc.var.indexdoubleLSPeak Lomb-Scargle power (1982ApJ...263..835S)src.var.indexfloatecosw? Minimum eccentricity |e*cos({omega})|src.orbital.eccentricityfloatnullablee_ecosw? rms uncertainty on |e*cos({omega})|stat.errorfloatnullableSpTypeMK spectral type (1)src.spTypecharSimIDID of closest star in SIMBAD at RA/DEmeta.idcharSimID2ID of alternative nearby star (2)meta.idcharEB[0,1] 1 = known eclipsing binary flagmeta.codeintMJDmid-eclipse Modified Julian Datedtime.epochdoubleNote[*] Note for CCDM J03295+2107 (3)meta.notechar