J/ApJS/244/32ivo://CDS.VizieR/J/ApJS/244/32doi:10.26093/cds/vizier.22440032CDSPlachy E.Molnar L.Bodi A.Skarka M.Szabo P.Szabo R.Klagyivik P.,Sodor A.Pope B.J.S.2021-09-09T12:26:53Z2020-04-15T11:51:59ZCDS support team

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

cds-question@unistra.frvariable-starspopulation-ii-starsphotometryvisible-astronomyThe Kepler Space Telescope observed thousands of RR Lyrae stars in the K2 mission. In this paper, we present our photometric solutions using extended apertures in order to conserve the flux of the stars to the highest possible extent. With this method, we are able to avoid most of the problems that RR Lyrae light curves produced by other pipelines suffer from. For post-processing, we apply the K2SC pipeline to our light curves. We provide the EAP (Extended Aperture Photometry) of 432 RR Lyrae stars observed in campaigns 3, 4, 5, and 6. We also provide subclass classifications based on Fourier parameters. We investigated in particular the presence of the Blazhko effect in the stars and found it to be 44.7% among the RRab stars, in agreement with results from independent samples. We found that the amplitude and phase modulation in the Blazhko stars may behave rather differently, at least over the length of a K2 Campaign. We also identified four anomalous Cepheid candidates in the sample, one of which is potentially the first Blazhko-modulated member of its class.2019ApJS..244...32Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/244/32CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/133 : Kepler Input Catalog (Kepler, 2009)IV/34 : K2 Ecliptic Plane Input Catalog (EPIC) (Huber+, 2017)J/ApJ/598/597 : Frequency analysis of fundamental-mode RRL (Alcock+, 2003)J/A+A/430/1049 : RR Gem BV(RI)c differential photometry (Jurcsik+, 2005)J/MNRAS/391/164 : MW Lyr BV(RI)c light curves (Jurcsik+, 2008)J/MNRAS/415/1577 : CoRoT 105288363 Blazhko modulation (Guggenberger+, 2011)J/AcA/61/1 : VI LCs of Galactic Bulge RR Lyrae (Soszynski+, 2011)J/ApJS/213/31 : Blazhko effect from 4yr of Kepler data (Benko+, 2014)J/AcA/64/177 : VI LCs of Galactic Bulge RR Lyrae (Soszynski+, 2014)J/A+A/579/A19 : K2 Variable Catalogue (Armstrong+, 2015)J/MNRAS/452/4283 : 33 RR Lyrae observed in Pisces with K2-E2 (Molnar+, 2015)J/AcA/65/233 : OGLE Magellanic Clouds anomalous Cepheids (Soszynski+, 2015)J/MNRAS/456/2260 : K2 Variability Catalogue II (Armstrong+, 2016)J/A+A/594/A100 : K2 new planetary and EB candidates (Barros+, 2016)J/MNRAS/466/2602 : Blazhko effect in Galactic RR Lyrae (Prudil+, 2017)J/AcA/67/297 : OGLE Gal. center Cepheids and RR Lyrae (Soszynski+, 2017)J/A+A/620/A127 : Cassification of RR Lyrae and Cepheid (Molnar+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/244/32https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/244/32http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/244/32https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/244/32https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/244/32http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/244/32GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/244/32/table2 (RR Lyrae stars processed with the Extended Aperture Photometry (EAP) method)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/244/32/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/244/32/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/244/32/table2?GETtext/xml+votable180.050000true338.887895-17.971128060.005555555555555556Cone search capability for table J/ApJS/244/32/table3 (Non RR Lyrae stars in the sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/244/32/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/244/32/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/244/32/table3?GETtext/xml+votable180.050000true337.98471-12.355543890.0055555555555555565/4634 6406 6407 6424 6448 6452 6454 6/261 270 274 276 280 281 284 285 289 295 301 303 307 314 317 319 322 328 335 339 340 341 342 346 353 354 355 360 363 364 366 368 369 371 375 381 383 388 391 400 403 404 409 415 437 448 449 451 454 464 467 468 469 470 473 474 1058 1065 1066 4247 4252 4253 4255 4286 4287 4297 4301 4313 4314 4328 4333 4335 4346 4347 4349 4351 4514 4521 4522 4613 4622 4623 4624 4626 4628 4632 4634 4638 4656 4657 4661 4662 4663 4675 4677 4678 4684 4687 4691 4692 4695 4696 4700 4701 4704 4705 4707 4708 4710 4712 4714 4719 4720 4725 4726 4727 4728 4730 4731 4733 4734 4757 4800 4801 4805 4816 4873 4876 4896 18433 18435 18436 18441 18444 18449 18451 18452 18457 18459 18466 18469 18474 18477 18480 18481 18484 18486 18488 18489 18492 18493 18495 18499 18509 18511 18522 18561 18566 18571 18573 18578 18579 18580 18582 18585 18586 18589 18599 18610 18616 18621 18627 18630 18633 18635 18636 18648 18652 18656 18660 18665 18668 18669 23470 23471 23482 23484 23485 23486 23529 25602 25605 25606 25607 25610 25611 25614 25615 25616 25619 25633 25637 25641 25644 25646 25647 25648 25649 25653 25655 25656 25657 25659 25660 25663 25672 25673 25674 25676 25677 25683 25686 25690 25692 25694 25701 25702 25703 25704 25706 25707 25708 25709 25711 25712 25713 25716 25718 25719 25721 25723 25725 25726 25727 25728 25729 25741 25744 25746 25747 25748 25749 25751 25752 25753 25755 25756 25757 25759 25781 25796 25797 25799 25800 25801 25802 25805 25806 25807 25812 25813 25824 25829 25896 44719 44722 44723 44726 44731 44732 44769 44770 44771 44777 44779 44780 48502 48503 48510 48511 48597 48607https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/244/32?format=asciiOpticaldefaultJ/ApJS/244/32/table2RR Lyrae stars processed with the Extended Aperture Photometry (EAP) methodrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEPIC[205905693/229228121] K2 EPIC identifiermeta.id;meta.mainlongRAJ2000[52.3/343.8] Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-18.1/24.5] Declination (J2000)degpos.eq.dec;meta.mainKpmag[11.2/21.3] Kepler magnitudemagphot.mag;em.optfloatCamK2 campaignmeta.id;obscharTypeRR Lyrae subtypemeta.notecharPer-FM[0.45/0.9]? Fundamental perioddtime.perioddoublenullablePer-O1[0.25/0.5]? 1st overtone perioddtime.perioddoublenullableJ/ApJS/244/32/table3Non RR Lyrae stars in the samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEPIC[206090129/229228122] K2 EPIC identifiermeta.id;meta.mainlongRAJ2000[53.5/338.8] Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-17.3/24.6] Declination, decimal degrees (J2000)degpos.eq.dec;meta.mainKpmag[9.6/20.1] Kepler magnitudemagphot.mag;em.optfloatCamK2 campaignmeta.id;obscharOTNon-RR Lyrae type ("EB", "ROT", "ROT/W Vir" or "?")src.classcharSimbadSimbad column added by the CDSmeta.ref.urlchar