J/A+A/622/A60ivo://CDS.VizieR/J/A+A/622/A60doi:10.26093/cds/vizier.36220060CDSClementini G.Ripepi V.Molinaro R.Garofalo A.Muraveva T.,Rimoldini L.Guy L. P.Jevardat de Fombelle G.Nienartowicz K.,Marchal O.Audard M.Holl B.Leccia S.Marconi M.Musella I.,Mowlavi N.Lecoeur-Taibi I.Eyer L.De Ridder J.Regibo S.,Sarro L.M.Szabados L.Evans D.W.Riello M.2019-02-01T11:40:17Z2019-01-28T08:00:33ZCDS support team

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

cds-question@unistra.frvariable-starsThe Gaia second Data Release (DR2) presents a first mapping of full-sky RR Lyrae stars and Cepheids observed by the spacecraft during the initial 22 months of science operations. The Specific Object Study (SOS) pipeline, developed to validate and fully characterise Cepheids and RR Lyrae stars (SOS Cep&RRL) observed by Gaia, has been presented in the documentation and papers accompanying the Gaia first Data Release. Here we describe how the SOS pipeline was modified to allow for processing the Gaia multi-band (G, GBP, and GRP) time-series photometry of all-sky candidate variables and produce specific results for confirmed RR Lyrae stars and Cepheids that are published in the DR2 catalogue. The SOS Cep&RRL processing uses tools such as the period-amplitude and the period-luminosity relations in the G band. For the analysis of the Gaia DR2 candidates we also used tools based on the GBP and GRP photometry, such as the period-Wesenheit relation in (G,GRP). Multi-band time-series photometry and characterisation by the SOS Cep&RRL pipeline are published in Gaia DR2 for 150359 such variables (9575 classified as Cepheids and 140784 as RR Lyrae stars) distributed throughout the sky. The sample includes variables in 87 globular clusters and 14 dwarf galaxies (the Magellanic Clouds, 5 classical and 7 ultra-faint dwarfs). To the best of our knowledge, as of 25 April 2018, variability of 50570 of these sources (350 Cepheids and 50,220 RR Lyrae stars) has not been reported before in the literature, therefore they are likely new discoveries by Gaia. An estimate of the interstellar absorption is published for 54272 fundamental-mode RR Lyrae stars from a relation based on the G-band amplitude and the pulsation period. Metallicities derived from the Fourier parameters of the light curves are also released for 64,932 RR Lyrae stars and 3,738 fundamental-mode classical Cepheids with period shorter than 6.3 days.2019A&A...622A..60Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/622/A60CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/622/A60https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/622/A60http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/622/A60https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/622/A60https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/622/A60http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/622/A60GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/622/A60/tablec1 (Gaia DR2 identification number for 983 sources misclassified as RR Lyrae stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/622/A60/tablec1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/622/A60/tablec1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/622/A60/tablec1?GETtext/xml+votable180.050000true308.176849410.82632140.0055555555555555565/8412 6/228 2568 4157 4301 4339 4348 4513 4522 4525-4526 4534 4556 4870 4877 4889 4945 4947 4956 4977 5037 5080 5085 5092-5093 5290 5345 5423 5464 5553 5594 5603 5665 5671 5705 5767 5777 5900 5916 5933 5935 5970 5981 6051-6052 6057 6061 6073-6074 6090 6109-6110 6114 6122 6141 6450 6461 6494 6501 6506 6621 7198 7223 7232 7264 7269 7332 7337 7365 7376 7379-7380 7389 7434-7435 7465 7467 7472 7481 7486 7498 7500 7511 7513 7516 7532 7539 7545 7547 7550-7551 7558 7575 7596 7614 7622 7634 7636-7637 7653 7678 7686 7689 7698 7735 7754 7765 7804 7807 7965 7967 7976 7982 7984 7989 7997 8002 8016 8030 8128 8156 8466 8514 8670 8693 8726 8809 8847-8848 8856 8859 8877 8883 8893 8897 8900 8919 8934 8944 8955 9020 9030 9051 9135 9138 9201 9204 9275 9308 9332 9351 9443 9462 9470 9475 9482-9483 9489 9530 9582-9583 9592 9595 9607 9612 9619 9622 9657 9670 9674 9678 9680 9682 9684 9688 9694 9696 9706 9726 9741 9767 9811 9813-9814 9820 9827 9843 9872 9911 9917 9922 9926 9958-9959 9965 9974-9975 9981 10002 10009-10010 10018 10024 10031 10039 10052-10054 10058 10075 10082-10083 10087 10100 10120 10123 10128 10134 10140 10151-10152 10154 10159 10170-10171 10176-10177 10187-10188 10191 10196 10214 10218 10230 10233 10235 10283 10419 10444 10470 10583 10587 10589 10641 10679 10684 10878 10886 10904 10920 10928 10943 11035 11058 11085 11097 11121 11147 11155 11164 11168 11180 11183 11188 11192 11227 11229 11234 11248 11250 11252 11255 11258 11261 11279 11287 11324 11334 11352 11359 11395 11424 11427 11439 11452 11509 11514 11522 11537 11540 11549 11591 11601 11604 11613 11615 11628 11636 11641 11647 11678 11682 11686 11693 11697-11698 11714 11722 11747-11748 11752 11769-11770 11789 11805 11809 11819 11826 11834-11835 11853 11856 11859 11866 11870 11873 11884 11886-11887 11889 11892 11896 11899 11911 11915 11919 11923 11928 11930 11932 11942 11946-11948 11950 11955 11957 11961 11963 11965 11969 11974-11975 11980 11986 11988 11992 12010 12030 12034 12038 12041 12046 12048 12050 12055-12056 12058 12062 12064 12068 12073-12074 12082 12098 12102-12103 12114 12126 12129 12133 12136 12142 12161-12162 12179 12189 12203 12205 12212 12221 12235 12241 12256 12263 12466 16400 16432 16447 16476 16492 16596 16598 16600 16631 16710 16803 17178 17317 17567 17840 18084 19566 19599 19665 19703 19848 19873 19940-19941 20073 20086 20100 20159 20179 20181 20235 20245 20302 20324 20369 20610 20616 20650 21001-21002 21125 21130 21150 21159 22568 22687 23052 24684 24690 24725 24882 25079 25252 25344 25371 25410 25432 25438 25460 25516 25541 26141 26184 26266 26279 26374 26409 26508 26569 26714 27664 27675 27715 27741 27762 27765 27947 28078 28091 28434 28524 28615 31353 31359 31472 31481 31491 31606 32503 32507 32509 32702 32781-32782 32794 32798 32802 32805 32817-32818 32828 32840 32846 32867 32880 32888 32895 32901 32907 32910 32915 32925 32939 32973 32977 32981 32986-32988 32990 32996 33000 33006 33011 33014-33015 33018 33023 33037 33141-33142 33149 33152 33154 33157 33160 33171 33190 33235 33237-33238 33246 33249 33280 33288 33300 33311 33315 33350 33362 33365 33371 33387 33391 33397 33407 33419 33423 33425 33441 33444 33459-33460 33467 33473 33478 33482 33512 33515 33522 33542 33566 33590 33620-33621 33624 33626-33628 33630-33631 33657 33708 33714 33744 33748 33755-33756 33767 33769 33779 33781 33783 33785 33795 33798 33802-33803 33815 33825 33827-33829 33832 33837 33842 33890 33896 33898 33913 33921 33924 33932 33947 33949-33950 33955 33957 33959 33962 33974 33976-33977 33981 33983 33985 33990-33991 33998 34006-34007 34016 34019 34021 34025 34033 34035 34039-34040 34044 34061 34073 34079-34082 34088 34091 34094 34103 34106 34121 34126-34127 34149 34154-34156 34158 34162 34169-34170 34178 34183 34189 34197 34201 34211 34216 34226-34227 34229 34233 34235 34241-34242 34249 34254 34272-34273 34280 34295 34304-34305 34309 34313 34315 34325 34328 34334 34338 34343 34351 34358 34362 34366 34371-34372 34374-34375 34381-34383 34385-34386 34388 34391-34392 34400 34402 34405 34409 34411-34413 34423 34430 34433 34437 34442 34464-34466 34478 34480 34495-34496 34506 34513 34530 34540 34550 34565-34566 34571 34574 34589 34594 34596 34626-34627 34631 34638 34650 34653 34658 34663 34668 34677 34689 34692 34694-34695 34707 34714 34724 34740 34754 34826 34828 34915 34937 34946-34947 34954 34975 34991 34994 35006 35034 35070 35094 35096 35118-35119 35124 35130 35144 35152 35154-35156 35161 35171 35175 35200 35220 35232 35237 35289 35330 35468 35485 35598 35700 35827 35838 35842 35847 35852-35853 35930 35953 35966 35998 36058 36065 36213 36269 36287 36391 36409 36495 36518 36528 36672 36690 36700 36706 43771 44490 44495 45061 45076 45086 45104 45128 45142 45153 45157 45176 45181 45183 45254 45269 45275 45284 45286 45320 45322 45325 45364 45375 45377 45397 45425 45428 45439 45445 45507 45560 45671 45779 45828 45893 45896 45925 45927 45937 45950 45962 45967 45976 45979 45984 45986 45997 46000 46009 46106 46113 46120 46124-46125 46132 46219 46221 46223 46264 46318 46377 46401 46421 46526 46534 46597 46605 46613 46626 46638 46662 46688 46856 47436 47472 47555 47562 48209 48228 48267 48338-48339 48520 48707 48752 48909 48944https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/622/A60?format=asciidefaultJ/A+A/622/A60/tablec1Gaia DR2 identification number for 983 sources misclassified as RR Lyrae starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceGaia DR2 identification number (source_id)meta.id;meta.mainNoteNotemeta.notechar_RAPositinos form Gaia DR2 (right ascension part)degpos.eq.ra;meta.main_DEPositinos form Gaia DR2 (declination part)degpos.eq.dec;meta.main