J/ApJ/781/22ivo://CDS.VizieR/J/ApJ/781/22doi:10.26093/cds/vizier.17810022CDSZinn R.Horowitz B.Vivas A.K.Baltay C.Ellman N.Hadjiyska E.,Rabinowitz D.Miller L.2025-02-07T20:11:09Z2015-12-10T13:55:52ZCDS support team

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

cds-question@unistra.frsurveysvariable-starshalo-starsvisible-astronomybroad-band-photometryA search for RR Lyrae stars (RRLSs) in ~840deg^2^ of the sky in right ascension 150{deg}-210{deg} and declination -10{deg} to + 10{deg} yielded 1013 type ab and 359 type c RRLS. This sample is used to study the density profile of the Galactic halo, halo substructures, and the Oosterhoff type of the halo over distances (d_{sun}_) from ~5 to ~80kpc. The halo is flattened toward the Galactic plane, and its density profile steepens in slope at galactocentric distances greater than ~25kpc. The RRLS in the stellar stream from the Sagittarius dwarf spheroidal (dSph) galaxy match well the model of Law & Majewski for the stars that were stripped 1.3-3.2Gyr ago, but not for the ones stripped 3.2-5.0Gyr ago. Over densities are found at the locations of the Virgo Overdensity and the Virgo Stellar Stream. Within 1{deg} of 1220-1, which Jerjen et al. identify as a halo substructure at d_{sun}_~24kpc, there are four RRLS that are possibly members. Away from substructures, the RRLS are a mixture of Oosterhoff types I and II, but mostly OoI (~73%). The accretion of galaxies resembling in RRLS content the most massive Milky Way satellites (LMC, SMC, For, Sgr) may explain this preponderance of OoI. Six new RRLS and three new anomalous Cepheids were found in the Sextans dSph galaxy.2014ApJ...781...22Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/781/22CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/765/154 : RR Lyrae stars in the Catalina Sky Survey (Drake+, 2013)J/MNRAS/425/1459 : RR Lyrae in M32 (Sarajedini+, 2012)J/ApJ/756/23 : V-band photometry of RR Lyrae from SEKBO (Akhter+, 2012)J/ApJ/708/717 : Light curve templates of RR Lyrae stars (Sesar+, 2010)J/AcA/60/165 : VI light curves of SMC RR Lyrae (Soszynski+, 2010)J/AcA/59/1 : VI light curves of LMC RR Lyrae stars (Soszynski+, 2009)J/ApJ/691/306 : RR Lyrae candidates photometry in Virgo stream (Prior+, 2009)J/ApJ/678/865 : LONEOS-I RR Lyrae stars (Miceli+, 2008)J/ApJ/678/851 : RR Lyrae survey in the Galactic Halo (Keller+, 2008)J/AJ/132/1361 : RR Lyrae variables in M33 (Sarajedini+, 2006)J/AJ/132/1202 : RR Lyrae in Northern Sky Variability Survey (Kinemuchi+, 2006)J/AJ/132/714 : QUEST RR Lyrae survey. II. Halo overdensities (Vivas+, 2006)J/AJ/130/1640 : Photometry of candidate RR Lyrae stars in the SDSS (Wu+, 2005)J/AJ/127/1158 : QUEST RR Lyrae Survey first catalog (Vivas+, 2004)J/AJ/115/193 : RR Lyrae V light curves (Layden, 1998)J/AJ/110/2166 : Variables in Sextans dSph galaxy (Mateo+ 1995)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/781/22https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/781/22http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/781/22https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/781/22https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/781/22http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/781/22GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/781/22/table1 (RR Lyrae stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/781/22/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/781/22/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/781/22/table1?GETtext/xml+votable180.050000true150.17071.36820.005555555555555556Cone search capability for table J/ApJ/781/22/table2 (Anomalous Cepheids in the Sextans dSph galaxy)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/781/22/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/781/22/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/781/22/table2?GETtext/xml+votable180.050000true152.994-2.03790.0055555555555555564/1639 5/6461-6462 6497-6499 6504-6505 6507-6509 6511 6522 6540 6543 6546 6548 6550 6554 6569 6572-6573 6575 6582-6583 6585 6587 6589 6593-6597 6599 6601-6602 6604 6606 6608-6609 6616 6626 6632 6725 6739 6741 6747 6765 6777 6848 6913 6917 6920 6923 6931-6932 6934 6936 6945 6947 6/25429 25431 25511 25513 25515 25517 25519 25528 25531 25534-25535 25564-25565 25567 25581 25583 25585-25588 25590-25593 25596-25598 25716 25718-25719 25725-25727 25770 25812-25813 25815 25821 25823 25838-25839 25841 25843 25853-25855 25896 25984 25986-25987 26008 26010-26011 26014 26025-26027 26041-26043 26094 26112 26114-26116 26120 26123-26125 26136 26138 26141 26157-26159 26166-26168 26170 26177-26181 26189-26191 26196-26197 26199 26205-26209 26211-26212 26215 26221-26223 26241 26243-26244 26246-26249 26251 26253-26255 26257-26259 26261 26263-26264 26266-26267 26269-26274 26280-26282 26285-26286 26297 26304-26305 26307-26310 26313-26315 26317-26322 26325-26327 26336 26338-26339 26344-26346 26354-26355 26360-26362 26364 26366-26367 26369-26371 26393-26395 26400 26402-26403 26412-26414 26420-26422 26429-26431 26440 26442 26445-26447 26450 26456 26458 26468 26470 26472-26474 26497-26499 26501-26503 26508-26509 26511-26513 26515-26517 26522 26532-26534 26536-26537 26540 26544 26847 26867-26868 26871-26873 26875 26877 26879 26899 26909 26911 26941 26943 26945-26948 26950-26951 26953-26955 26969-26970 26973-26977 26981-26982 26985-26986 26993-26994 26996-26998 27001-27002 27004-27005 27011-27012 27015 27017-27019 27021-27022 27026-27027 27029-27030 27032-27033 27038-27040 27047-27049 27051 27053-27056 27058-27059 27065 27067-27068 27071 27074 27078 27080 27082-27084 27086 27090-27091 27093-27095 27097 27099 27104-27105 27113-27114 27116-27117 27120-27121 27125-27127 27129-27133 27135 27203-27204 27206-27207 27212 27216-27217 27221 27223-27225 27229 27239 27245 27249-27250 27253 27256-27257 27259 27263 27351 27396-27398 27403-27406 27408 27410 27413-27416 27421-27422 27426-27428 27430-27433 27435 27437 27439 27441-27443 27446-27448 27451 27455-27457 27459-27460 27462 27464-27466 27470-27471 27473 27476 27480 27483 27491 27495-27496 27498 27521 27527-27528 27532-27533 27535-27536 27538 27556 27648 27651 27659-27662 27664 27666-27667 27673 27675 27677-27679 27684-27685 27688-27689 27691 27697 27700 27702-27703 27706-27707 27710-27712 27714-27718 27720-27721 27723 27732-27734 27749-27750 27752-27754 27777 27779 27786-27787 27792 27794-27797 27802 27804 27810-27812 27814 278183.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/781/22?format=asciiOpticaldefaultJ/ApJ/781/22/table1RR Lyrae starsLCLight Curvemeta.ref.urlchar<Vmag>[13.7/20.6] Intensity averaged mean magnitude in the V bandmagphot.mag;em.opt.VfloatAmp[0.1/1.5] Amplitude in the V bandmagphot.magfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStar[1/1378] Running identification number of the RR Lyrae star (RRLS) in order of increasing RAdeg (1)meta.id;meta.mainintprimaryRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainNobs[11/311] Number of observations used in template fitmeta.numberintNpNumber of photometry measurements for this star (link to Table 3)meta.numberintnullablePer[0.2/0.9] Perioddtime.perioddoubleSimbadSimbad column added by the CDSmeta.ref.urlcharTypeType of RR Lyrae variable (ab, c)meta.code;src.varcharHJDmax[55258.5/55347.6] Heliocentric Julian Date of maximum brightness (HJD-2400000.0)dtime.epochdoubleC[0/1] Photometric calibration (0=good, 1=poor) (2)instr.calibintMmRRLS that is suspected to be member of Sextans dSph galaxy (Sex dSph)meta.code.member;src.class.starGalaxycharONameVariable star number in Sextans (Mateo et al. 1995, cat. J/AJ/110/2166), if availablemeta.idcharJ/ApJ/781/22/table2Anomalous Cepheids in the Sextans dSph galaxySimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarIdentification number of the Cepheid in order of increasing RAdegmeta.id;meta.mainintprimaryRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainNobsNumber of observations used in template fitmeta.numberint<Vmag>Intensity averaged mean magnitude in the V bandmagphot.mag;em.opt.VfloatAmpAmplitude in the V bandmagphot.magfloatPerPerioddtime.perioddoubleHJDmaxHeliocentric Julian Date of maximum brightness (HJD-2400000.0)dtime.epochdoubleVMagAbsolute V-band magnitudephys.magAbsfloatr_ONameReference for OName (1)meta.ref;pos.framecharOName? Other identification number of the variablemeta.idintnullableLCLight Curvemeta.ref.urlcharJ/ApJ/781/22/table3The observationsStarStar number in Tables 1 or 2meta.id;meta.maininte_VmagStandard deviation of Vmag (based on photon statistics) (1)magstat.error;phot.magfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Date of observation (HJD-2400000.0)dtime.epochdoubleindexedVmagThe observed V-band magnitude transformed to the standard systemmagphot.mag;em.opt.Vfloat