J/MNRAS/415/1061ivo://CDS.VizieR/J/MNRAS/415/1061doi:10.26093/cds/vizier.74151061CDSMickaelian A.M.Mikayelyan G.A.Sinamyan P.K.2024-07-14T20:15:24Z2011-08-03T17:34:18ZCDS support team

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

cds-question@unistra.frvisible-astronomyphotographic-photometrycataclysmic-variable-starswhite-dwarf-starsA new method for combined calculations of magnitudes based on accurate measurements of POSS1 and POSS2 epoch plates is given. The photometric accuracy of various surveys and catalogs has been estimated and established and statistical weights for each of them have been calculated. To achieve the best possible magnitudes, weighted averaging of data from USNO-A2.0, APM, MAPS, USNO-B1.0, and GSC 2.3.2 catalogs have been used. The rms accuracy of magnitudes achieved for POSS1 is 0.184 mag for B and 0.173 mag for R and for POSS2 is 0.138 mag for B and 0.128 mag for R. We have derived the best POSS1 and POSS2 magnitudes for the FBS blue stellar objects. We have refined the transformation formulae between the POSS1 and POSS2 magnitudes and SDSS ones and standard UBV system. Using these accurate magnitudes, we have estimated the variability of the FBS blue stellar objects and revealed probable and possible variables. We have worked out methods to control and exclude accidental errors that appear in any survey. We have compared and combined our results with those given in NSVS database and obtained better candidates for variability. Having excluded variables, we have combined POSS1 and POSS2 data for the rest of objects to achieve even better magnitudes and colors; the rms being smaller than 0.1 mag both in B and R and for the B-R colors. This approach has been applied to the First Byurakan Survey blue stellar objects containing significant number of white dwarfs, cataclysmic variables, as well as extragalactic objects (quasars, Seyferts, BL Lac objects). Altogether 336 variable objects have been revealed with POSS2-POSS1 >= 3{sigma} of the errors. An electronic table of these objects is given. Candidate variables are divided into 4 classes: extreme, strong, probable and possible variables. For a more reliable sample of variable objects we excluded possible ones from the list and were left with 161 objects. Analyzing radio and X-ray properties of these objects, we have revealed their nature and re-discovered or revealed candidate AGN, CVs, WDs and other objects.2011MNRAS.415.1061Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/415/1061CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/223 : First Byurakan Survey (FBS), 2nd Program (Abrahamian+, 1990-96)III/258 : Revised and updated First Byurakan Survey (FBS) (Mickaelian, 2008)J/MNRAS/407/681 : Proper motions of FBS blue stellar objects (Mickaelian+ 2010)J/A+A/426/367 : FBS blue stellar objects DSS1/DSS2 astrometry (Mickaelian 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/415/1061https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/415/1061http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/415/1061https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/415/1061https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/415/1061http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/415/1061GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/415/1061/table8 (Accurate photometry of FBS blue stellar objects)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/415/1061/table8?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/415/1061/table8?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/415/1061/table8?GETtext/xml+votable180.050000true5.597166740.43088890.0055555555555555565/1534 1901 2460 3425 6/894 955-956 976 989 1002 1004 1009 1011 1014 1019 1021 1568 1570 1572 1668 1672 1697 1701 1705 1708 2014 2039 2046 2236 2251 2254 2257 2262-2263 2269 2277 2281-2282 2292 2297 2303 2316 2319-2320 2328 2330 2332 2346 2349 2358 2363 2366 2371 2385 2399 2419 2424-2425 2439 2443-2444 2463 2477 2479 2498 2506 2572 2575 2577 2581 2584-2586 2588 2591 2593 2599 2603 2606 2616 2621 2625-2626 2631 2636 2641 2651 2653-2654 2660 2664-2665 2669-2670 2672 2674 2703-2704 2714 2717 2730 2739 2753 2756 2760 3076 3082 3416 3452 3527 3531 3539 3553 3561 3566 3569 3583 3909 3911 3928 3933 3954 3959 4061 4063 4082 4990 5047 5068 5082 5084 5091 5100 5109 5113 5115 5117-5118 5244 5308 5327 5373 5388 5392-5393 5396 5399-5400 5406 5409-5410 5420 5429 5434 5437-5439 5453 5458 5463 5466 5470-5471 5481 5489-5492 5514 5521 5537 5539 5544 5546 5550 5553 5569 5572-5573 5576 5578 5643 5648-5650 5652 5654-5655 5658 5682 5687 5690-5691 5698 5700 5705 5710 5713 5720 5722 5724 5738 5746 5760-5761 5780 5789 5791 5802 5809 5826-5828 5832-5833 5890 5893 6103 6108 6110 6125-6126 6129-6130 6141-6143 6267 6342 6349 6365 6380 6385 6391 6415-6416 6425 6452 6461 6471 6477 6486 6493 6503 6507 6523 6536 6539-6540 6547 6560 6579 6593-6594 6676-6677 6684-6685 6706 6710 6713 6724 6727 6733 6737 6748 6754 6757 6759 6808 6814 6834 6848 6851-6853 7149 7155 7157 7160 7164 7171 7390 7403-7404 7410 7412-7413 7415 7417 7423 7474 7479 7483 7486 7488-7489 7498-7499 7503 7508 7510-7511 7513 7518 7520 7526-7527 7530-7531 7536 7544 7552 7555 7557 7559 7567 7576-7577 7579 7581-7583 7587-7588 7594 7596 7601-7602 7608-7609 7614 7622-7623 7626 7631 7636 7639 7644-7645 7655 7657 7663 7668 7670 7672 7675 7719 7725-7726 7729 7734 7740 7750-7752 7755-7756 7765 7771-7773 7777-7779 7795 7799 7801 7808 7811 7815 7818 7825 7830 7836 7839 7845 7848 7881-7883 7887 7893-7894 7899 7903 7908 7916 7928 7932-7933 7935 7943 7946 7958 7963-7964 7971 7974 7977 7981-7982 7998 8002 8004 8006 8016-8017 8023 8034 8044 8049-8050 8055 8063 8071 8073-8074 8077 8080 8082 8096 8103 8108 8112 8114 8119 8126 8128 8131 8135 8137 8139 8147 8152 8154-8155 8158 8160 8163 8182 8184 8190 9078 9083 9086 9141 9159 9165 9169 9176 9180-9181 9186 9189 9202 9211 9215 9340 9343 9424 9426 9429 9433 9436 9454-9455 9457 9461 9463-9465 9470 9484 9497 9501 9505-9506 9510 9512 9516 9521 9526 9533 9535 9537 9539 9544 9547 9552 9554 9556-9557 9561-9562 9567 9573 9578 9585 9587 9593 9600 9602 9610 9612 9614 9617 9620 9624 9630 9633 9638 9640 9643 9651 9664 9747 9751 9762-9763 9765 9770 9775 9786 9790 9793-9794 9798 9800 9806 9811-9812 9818-9820 9826-9827 9832 9839 9859 9869 9881-9883 9886 9894-9895 9899 9901 9903 9905 9907-9909 9928-9929 9993 10220 10226 10233 10357 10428 10441 10445 10458 10462 10471-10472 10474 10489 10495 10514 10519 10525-10526 10529 10536 10543 10552-10553 10561 10563 10572 10578 10584 10589 10593 10599 10602 10604 10624 10628-10630 10636-10637 10640 10642-10645 10653 10655 10659 10665 10671 10675 10677 10680 10691 10759 10764 10768-10769 10782-10784 10794 10799-10800 10802 10807 10810 10815 10833 10845 10854 10860 10863 10873 10881 10888 10890 10903 10905 10911 10919 10923 10926 10929 10936-10937 10945 10947-10948 10950 11014 11016 11230-11231 11244-11245 11250 11256 11264 11272 11479 11483 11486 11511 11514-11516 11518 11541 11550 11565 11576-11578 11582-11583 11593 11598-11599 11605 11608 11610 11612 11616 11627 11636-11637 11642 11648 11650 11652-11653 11665-11667 11678 11680 11683-11684 11686 11689-11690 11694 11698 11704 11712-11713 11721 11723-11724 11735 11738-11739 11746 11748 11755 11768 11770 11799 11805 11823 11827 11829 11835 11838-11839 11844 11861-11862 11867 11873 11875 11882-11884 11887 11898 11902 11907 11918 11920-11921 11924 11926 11929 11934-11935 11941-11942 11944 11946-11947 11951 11954 11957 11959 11963 11970 11973 11984 11988 12002 12022-12024 12037 12048 12053 12062 12070 12083 12086 12088 12092-12093 12100 12102 12104 12110 12114 12120 12126 12133 12135 12141-12142 12150 12156-12158 12163-12166 12171-12172 12177 12192-12193 12200 12204 12207 12212-12213 12222 12228 12233-12234 12236 12238 12244 12252 12254 12259 12262-12263 12273 12278-12280 12282-12284 13437 13502 13521 13524 13532 13534 13538 13542 13544 13546 13555 13561 13563-13564 13581-13582 13585-13586 13589 13592 13601 13609 13613 13615 13623 13630 13646-13647 13650-13651 13654 13659 13665 13668 13673 13676 13678 13681-13682 13688 13704-13705 13707-13708 13718-13720 13726 13730 13732-13733 13745-13746 13748 13752 13754 13760 13768 13770 13840 13847 13853 13855 13888 13896-13897 13900 13910 13915 13922-13923 13926 13931 13944 14085 14089 14890 14939 14948 14961 14970 14984 14986 14991 15002 15015 15021-15023 15042-15043 15049 15340 15342 15348 15351 16032 16046 16296 16303 16314 16316 16379 20343 20345 20351 20411 20414 20423 20472 20474 28543 28615 28618 28620 28622 28637-28638 28646 28663 28666 32639 32711 32719 32724 32729 32731 32733 32736 32746 32749 32754 32758 32762 32764https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/415/1061?format=asciiOpticaldefaultJ/MNRAS/415/1061/table8Accurate photometry of FBS blue stellar objectsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_SeqSimbad column added by the CDSmeta.code;src.varcharSeq[1,1103] FBS blue stellar objects numbermeta.idintprimaryFBSFBS BSOs object name (HHMM+DDMMA)meta.id;meta.maincharB1mag? POSS1 best blue magnitudemagphot.mag;em.UV.100-200nmfloatnullablee_B1mag? Errors of POSS1 best blue magnitudemagstat.error;phot.mag;em.opt.Bfloatnullabler_B1mag[MAU ] Used measurements for POSS1 B (1)meta.ref;pos.framecharR1mag? POSS1 best red magnitudemagphot.mag;em.opt.Rfloatnullablee_R1mag? Errors of POSS1 best red magnitudemagstat.error;phot.mag;em.opt.Rfloatnullabler_R1mag[MAU ] Used measurements for POSS1 R (1)meta.ref;pos.framecharB-R? POSS1 best B-R color indexmagphot.color;em.opt.B;em.opt.RfloatnullableEpoch1Date of observation (yyyy.yyy) for POSS1yrtime.epochdoubleB2mag? POSS2 best blue magnitudemagphot.mag;em.opt.Bfloatnullablee_B2mag? Errors of POSS2 best blue magnitudemagstat.error;phot.mag;em.opt.Bfloatnullabler_B2mag[GU ] Used measurements for POSS2 B (1)meta.ref;pos.framecharR2mag? POSS2 best red magnitudemagphot.mag;em.opt.Rfloatnullablee_R2mag? Errors of POSS2 best red magnitudemagstat.error;phot.mag;em.opt.Rfloatnullabler_R2mag[GU ] Used measurements for POSS2 R (1)meta.ref;pos.framecharI2mag? POSS2 best infrared magnitudemagphot.mag;em.opt.Ifloatnullabler_I2mag[GU ] Used measurements for POSS2 I (1)meta.ref;pos.framecharFBSdatDetails from the FBS blue stellar objects (Mickaelian 2008, Cat. III/258)meta.ref.urlchar_RAPosition from the FBS (Cat. III/258) (right ascension part)degpos.eq.ra;meta.main_DEPosition from the FBS (Cat. III/258) (declination part)degpos.eq.dec;meta.mainEpoch2Date of observation (yyyy.yyy) for POSS2yrtime.epochdoubleJ/MNRAS/415/1061/table13Variability of FBS blue stellar objectsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1,1103] FBS blue stellar objects numbermeta.idintFBSFBS BSOs object name (HHMM+DDMMA)meta.id;meta.maincharB1mag? POSS1 best blue magnitudemagphot.mag;em.UV.100-200nmfloatnullablee_B1mag? Errors of POSS1 best blue magnitudemagstat.error;phot.mag;em.opt.BfloatnullableR1magPOSS1 best red magnitudemagphot.mag;em.opt.Rfloate_R1magErrors of POSS1 best red magnitudemagstat.error;phot.mag;em.opt.RfloatEpoch1Date of observation (yyyy.yyy) for POSS1yrtime.epochdoubleB2magPOSS2 best blue magnitudemagphot.mag;em.opt.Bfloate_B2magErrors of POSS2 best blue magnitudemagstat.error;phot.mag;em.opt.BfloatR2magPOSS2 best red magnitudemagphot.mag;em.opt.Rfloate_R2magErrors of POSS2 best red magnitudemagstat.error;phot.mag;em.opt.RfloatI2magPOSS2 best infrared magnitudemagphot.mag;em.opt.IfloatEpoch2Date of observation (yyyy.yyy) for POSS2yrtime.epochdoubleBdiff? POSS2 bestB-POSS1 bestB magnitude differencemagphot.mag;arith.difffloatnullableRdiffPOSS2 bestR-POSS1 bestR magnitude differencemagphot.mag;arith.difffloatBvarVariability class based on B magnitude (2)meta.code;src.varcharRvarVariability class based on R magnitude (2)meta.code;src.varcharVarCombined variability from B+R magnitudes (2)meta.code;src.varcharRnsvs? NSVS median R magnitudemagphot.mag;em.opt.Rfloatnullablee_Rnsvs? NSVS R magnitude errormagstat.errorfloatnullableRsct? NSVS R magnitude scattermagstat.errorfloatnullableTypeObjects type and subtypesrc.classchar