J/MNRAS/504/5907ivo://CDS.VizieR/J/MNRAS/504/5907doi:10.26093/cds/vizier.75045907CDSGomel R.Faigler S.Mazeh T.Pawlak M.2024-08-21T20:17:52Z2021-07-25T10:11:05ZCDS support team

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

cds-question@unistra.frsurveysphotometryvariable-starsThis is the third of a series of papers that presents an algorithm to search for close binaries with massive, possibly compact, unseen secondaries. The detection of such a binary is based on identifying a star that displays a large ellipsoidal periodic modulation, induced by tidal interaction with its companion. In the second paper of the series, we presented a simple approach to derive a robust modified minimum mass ratio (mMMR), based on the observed ellipsoidal amplitude, without knowing the primary mass and radius, assuming the primary fills its Roche lobe. The newly defined mMMR is always smaller than the actual mass ratio. Therefore, a binary with an mMMR larger than unity is a good candidate for having a massive secondary, which might be a black hole or a neutron star. This paper considers 10956 OGLE short-period ellipsoidals observed towards the Galactic bulge. We re-analyse their modulation and identify 136 main-sequence systems with mMMR significantly larger than unity as candidates for having compact-object secondaries, assuming their observed periodic modulations reflect indeed the ellipsoidal effect. Obviously, one needs follow-up observations to find out the true nature of these companions.2021MNRAS.504.5907Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/504/5907CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AcA/66/405 : Galactic bulge eclipsing + ellipsoidal binarieshttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/504/5907https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/504/5907http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/504/5907https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/504/5907https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/504/5907http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/504/5907GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/504/5907/tableb1 (OGLE short-period ellipsoidals)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/504/5907/tableb1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/504/5907/tableb1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/504/5907/tableb1?GETtext/xml+votable180.050000true262.4632-28.79160.0055555555555555564/1794-1795 1798 1803 1805-1806 5/7174-7175 7198-7201 7205 7209 7211 7216-7217 7219 7230 7243 7296 7312-7313 7316 10591 10622 6/28683 28685-28687 28744 28746-28747 28750-28751 28756-28757 28759 28784 28786-28787 28790 28808 28811 28814-28817 28819 28828-28829 28831 28833 28835 28841-28843 28872-28873 28875 28914 28916 28926 28928 28966 29056 29058-29059 29064-29066 29188 29201 29203 29205-29207 29256-29257 29259-29261 29268 29270 29272-29273 42349 42351 42357 42359-42360 42362 42452-42453 42455 42461 42492 42495 42837 47869 47871 48015 48033 48035-48036 48038 48040-48042https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/504/5907?format=asciidefaultJ/MNRAS/504/5907/tableb1OGLE short-period ellipsoidalsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDStar's ID (OGLE-BLG-NNN-NNNNNN)meta.id;meta.maincharRAJ2000Right ascension (J2000.0)degpos.eq.ra;meta.mainindexedDEJ2000Declination (J2000.0)degpos.eq.dec;meta.mainindexedPOGLE orbital perioddtime.perioddoubleT0Reference time [JD-2450000]dtime.epochdoublee_T0Reference-time errordstat.errordoubleImagFitted I magnitudemagphot.mag;em.opt.Idoublee_ImagFitted I magnitude errormagstat.error;phot.magdoublea1cCosine coefficient of first harmonicmagstat.fit.paramdoublee_a1ca1c errormagstat.errordoublea2cCosine coefficient of second harmonicmagstat.fit.paramdoublee_a2ca2c errormagstat.errordoublea3cCosine coefficient of third harmonicmagobs.atmos.extinctiondoublee_a3ca3c errormagstat.errordoublea4cCosine coefficient of forth harmonicmagstat.fit.paramdoublee_a4ca4c errormagstat.errordoublea1sSine coefficient of first harmonicmagstat.fit.paramdoublee_a1sa1s errormagstat.errordoublea2sSine coefficient of second harmonicmagstat.fit.paramdoublee_a2sa2s errormagstat.errordoublea3sSine coefficient of third harmonicmagstat.fit.paramdoublee_a3sa3s errormagstat.errordoublea4sSine coefficient of forth harmonicmagstat.fit.paramdoublee_a4sa4s errormagstat.errordoubleNTotal number of analyzed pointsmeta.numberintNsTotal number of analyzed seasonsmeta.numberintTimeRangeLight-curve time rangedtime.intervalintindexedchisReduced chi-square of a four-harmonic modelstat.fit.chi2floatmMMRModified minimum mass ratiophys.mass;arith.ratiofloatmMMR1sigLower-percentile mMMRstat.errorfloatSimbadNameSimbad column added by the CDSmeta.idchar