J/ApJS/203/33ivo://CDS.VizieR/J/ApJS/203/33doi:10.26093/cds/vizier.22030033CDSRichichi A.Fors O.Cusano F.Moerchen M.2018-01-30T07:17:50Z2013-01-28T13:08:51ZCDS support team

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

cds-question@unistra.frinfrared-photometryastronomical-object-identificationvariable-starsinterferometryWe aim to provide a list of sources found to be unresolved from direct observations with high angular resolution and dynamic range, which can be used to choose interferometric calibrators. To this purpose, we have used a large number of lunar occultations recorded with the ISAAC instrument at the Very Large Telescope to select sources found to be unresolved and without close companions. An algorithm has been used to determine the limiting angular resolution achieved for each source, taking into account a noise model built from occulted and unocculted portions of the light curves. We have obtained upper limits on the angular sizes of 556 sources, with magnitudes ranging from Ks~4 to 10, with a median of 7.2mag. The upper limits on possible undetected companions (within ~0.5") range from Ks~8 to 13, with a median of 11.5mag. One-third of the sources have angular sizes <=1mas, and two-thirds have sizes <=2mas. This list of unresolved sources matches well the capabilities of current large interferometric facilities. We also provide available cross-identifications, magnitudes, spectral types, and other auxiliary information. A fraction of the sources are found to be potentially variable. The list covers parts of the Galactic Bulge and in particular the vicinity of the Galactic Center, where extinction is very significant and traditional lists of calibrators are often insufficient.2012ApJS..203...33Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/203/33CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)I/142 : LUNAR OCCULTATIONS OF IRAS POINT SOURCES: 1991-2000J/A+A/532/A101 : Lunar occultations of 184 stellar sources (Richichi+, 2011)J/A+A/522/A65 : Lunar occultations at the ESO VLT (Richichi+, 2010)J/ApJS/176/276 : PTI calibrator catalog (van Belle+, 2008)J/A+A/431/773 : CHARM2, an updated of CHARM catalog (Richichi+, 2005)J/AJ/112/2786 : 1985-1995 lunar occultations at TIRGO (Richichi+ 1996)http://www.andrearichichi.com/work/luna/ : Lunar occultations archive accesshttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/203/33https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/203/33http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/203/33https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/203/33https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/203/33http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/203/33GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/203/33/table1 (List of sources found unresolved by the lunar occultation technique)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/203/33/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/203/33/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/203/33/table1?GETtext/xml+votable180.050000true264.630833-28.2123610.0055555555555555565/115 7223 7266 6/472 1039 4297 4299 4324 4326 4371 4512 6147 6153 18661 18672 18674 18885 19495 19506 19507 23997 24040 24275 24281 26947 26950 27389 27391 27397 27408 27410 27431 27436 27443 27523 27538 27562 28789 28791 28823 28829 28830 28849 28851 28852 28866 28867 28872 28877 28882 28888 28889 28917 28948 28951 28956 28957 28961 28974 28987 28990 29026 29073 29187 29190 29193 29195 29198 29213 29217 29249 29250 29251 29252 29254 42977 44326 44331 44332 44418 44615 44626 44741 44746 44768 48062 48063 48090 48091 48100 48101 48102 48112 48113 48123 48126 48700 48754 48755 48758 48772 48779 488428.650015785639275e-20 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/203/33?format=asciiInfrareddefaultJ/ApJS/203/33/table1List of sources found unresolved by the lunar occultation techniquerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS identifier (HHMMSSss+DDMMSSs; J2000)meta.id;meta.maincharOurIDESO Period number/sequential identifier (1)meta.idcharf_OurID[*] * = sources observed with a narrow band filtermeta.codecharSimbadSimbad identifiermeta.id.crosscharRAJ2000Hour of Right Ascension (J2000) (2)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000) (2)pos.eq.dec;meta.mainBmag? Simbad B band magnitudemagphot.mag;em.opt.BfloatnullableVmag? Simbad V band magnitudemagphot.mag;em.opt.VfloatnullableJmag? 2MASS J band magnitudemagphot.mag;em.IR.JfloatnullableHmag? 2MASS H band magnitudemagphot.mag;em.IR.HfloatnullableKmag? 2MASS Ks band magnitudemagphot.mag;em.IR.KfloatnullableSpTypeMK spectral typesrc.spTypecharNref[1/106]? Number of ADS referencesmeta.numberintnullableOTypeSimbad object type(s)src.classcharSNR[10/378.5] Signal-to-noise ratiostat.snrfloatKlim[8.2/12.8] K-band limiting magnitudemagphot.magfloatRes[0.25/8.1] Limiting angular resolution; see Section 2maspos.angResolutionfloatVar[FS] Variability flag (3)meta.code;src.varchar