J/ApJ/745/24ivo://CDS.VizieR/J/ApJ/745/24doi:10.26093/cds/vizier.17450024CDSRaghavan D.Farrington C.D.ten Brummelaar T.A.McAlister H.A.,Ridgway S.T.Sturmann L.Sturmann J.Turner N.H.2017-10-09T13:33:56Z2013-08-07T12:15:22ZCDS support team

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

cds-question@unistra.frinterferometrymultiple-starsg-starsWe present the results of a comprehensive search for new companions to nearby solar-type stars using the separated fringe packet (SFP) technique at the Center for High Angular Resolution Astronomy (CHARA) Array. Our search included 636 observations of 186 stars, searching for companions with separations of approximately 8-80 mas and moderate brightness ratios ({Delta}K<~1.5). This survey was undertaken to support a comprehensive assessment of companions to solar-type stars within 25 pc. We detected separated fringe companions to two stars (HD 3196 and 79096) and found faint companion signatures to two more stars (HD 98231 and 137763). All of these companions are previously known by spectroscopic methods, and three of them have speckle interferometric observations as well. The faint companion seen to HD 98231 represents the first visual detection of this spectroscopic companion. Our null detection for new companions implies that the presumed gap between spectroscopic and visual techniques has largely been filled for nearby solar-type stars, thanks to systematic radial-velocity observations over multiple decades and a thorough coverage using visual techniques, especially speckle interferometric observations. We also generate simulated fringe packets to derive detection limits for SFP binaries using the CHARA Array.2012ApJ...745...24Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/745/24CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVI/46 : Second Catalog of Interferometric Measurements of Binary StarsJ/ApJ/736/89 : Search for companions around nearby stars (Janson+, 2011)J/ApJS/190/1 : A survey of stellar families (Raghavan+, 2010)J/AJ/139/743 : Speckle interferometry in 2008-09 (Tokovinin+, 2010)J/ApJS/181/62 : Survey of young solar analogs (Metchev+, 2009)J/AJ/135/1334 : Speckle interferometry at the USNO station (Hartkopf+, 2008)J/AJ/136/312 : 2001-2006 WIYN binary stars speckle observations (Horch+, 2008)J/AJ/121/3224 : Speckle interferometry of HIP binaries (Mason+, 2001)J/A+A/323/139 : K magnitude of Pleiades low-mass binaries (Bouvier+ 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/745/24https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/745/24http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/745/24https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/745/24https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/745/24http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/745/24GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/745/24/stars (List of the 186 stars observed (table added by CDS))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/745/24/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/745/24/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/745/24/stars?GETtext/xml+votable180.050000true1.6532729.02150110.0055555555555555566/60 100 137 309 684 742 815 819 824 1098 1530 1875 2051 2167 2491 2622 2652 2697 3313 3363 3372 3509 3639 3809 3979 4316 4591 4670 4766 4808 4942 5309 5377 5413 5488 5498 5670 5726 5772 6217 6226 6273 6385 6409 6926 6953 8109 8156 8224 8357 8424 8466 8591 8663 8746 9442 9492 9662 9679 9843 9873 10004 10598 10914 11103 11126 11142 11150 11314 11405 11412 11633 11713 12228 12232 12654 12846 12856 12890 12983 13025 13036 13215 13487 13547 13568 13749 13763 13778 13791 14180 14252 14278 14290 14342 14502 14539 14650 15154 15221 15227 15373 16069 16213 16220 16342 17266 17314 17576 17605 17731 17752 17944 17965 18115 18139 18614 18641 18821 19109 19912 20127 20328 20402 21477 21484 22981 23096 23140 23177 23201 23342 23583 23774 24016 24102 24212 24558 25407 25766 25869 25880 25906 26133 26183 26379 26906 26924 27088 27462 27973 28180 28400 29784 30015 30878 30965 31029 31073 31101 31145 31393 31399 31416 31425 31742 31768 32067 32211 32318 32372 32561 32757 36697 36762 44879 44891 49060https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/745/24?format=asciiOpticaldefaultJ/ApJ/745/24/starsList of the 186 stars observed (table added by CDS)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHD[166/224465] HD numbermeta.id;meta.mainintprimaryNsepNumber of Separated Fringe Packet detectionsmeta.numberintNSimbad column added by the CDSmeta.numberintnullableR10Link to Raghavan et al. 2010 (Cat. J/ApJS/190/1)meta.numberintnullableSimbadSimbad column added by the CDSmeta.refchar_RAPositions from SIMBAD database (right ascension part)degpos.eq.ra;meta.main_DEPositions from SIMBAD database (declination part)degpos.eq.dec;meta.mainJ/ApJ/745/24/table1Separated Fringe Packet ObservationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHDHD numbermeta.id;meta.mainintMJD[54125.2/54674.5] Modified Julian Date of mid-exposure observationdtime.epochdoubleBaseThe two-telescope baseline configurationinstr.setupcharFreq[65/150] Fringe frequencyHzem.freqintNg[65/358] Number of good fringe scansmeta.numberintNtot[137/1016] Number of total fringe scansmeta.numberintSFP?[Yes/ ] Detection of Separated Fringe Packet?meta.codechar