J/AJ/145/159ivo://CDS.VizieR/J/AJ/145/159doi:10.26093/cds/vizier.51450159CDSHuo Z.-Y.Liu X.-W.Xiang M.-S.Yuan H.-B.Huang Y.Zhang H.-H.,Yan L.Bai Z.-R.Chen J.-J.Chen X.-Y.Chu J.-R.Chu Y.-Q.Cui X.-Q.,Du B.Hou Y.-H.Hu H.-Z.Hu Z.-W.Jia L.Jiang F.-H.Lei Y.-J.,Li A.-H.Li G.-W.Li G.-P.Li J.Li X.-N.Li Y.Li Y.-P.Liu G.-R.,Liu Z.-G.Lu Q.-S.Luo A.-L.Luo Y.Men L.Ni J.-J.Qi Y.-J.,Qi Z.-X.Shi J.-R.Shi H.-M.Sun S.-W.Tang Z.-H.Tian Y.Tu L.-P.,Wang D.Wang F.-F.Wang G.Wang J.-N.Wang L.Wang S.-Q.Wang Y.,Wang Y.-F.Wei M.-Z.Wu Y.Xue X.-X.Yao Z.-Q.Yu Y.Yuan H.,Zhai C.Zhang E.-P.Zhang H.-T.Zhang J.-N.Zhang W.Zhang Y.-X.,Zhang Y.Zhang Z.-C.Zhao G.Zhao M.Zhao Y.-H.Zhou F.Zhou X.-L.,Zhu Y.-T.Zou S.-C.2014-06-27T15:36:35Z2014-06-02T13:40:34ZCDS support team

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

cds-question@unistra.frsurveysquasarsinfrared-photometryvisible-astronomybroad-band-photometryredshiftedextinctionWe present new quasars discovered in the vicinity of the Andromeda and Triangulum galaxies with the Large Sky Area Multi-Object Fiber Spectroscopic Telescope, also named the Guoshoujing Telescope, during the 2010 and 2011 observational seasons. Quasar candidates are selected based on the available Sloan Digital Sky Survey, Kitt Peak National Observatory 4m telescope, Xuyi Schmidt Telescope Photometric Survey optical, and Wide-field Infrared Survey Explorer near-infrared photometric data. We present 509 new quasars discovered in a stripe of ~135deg^2^ from M31 to M33 along the Giant Stellar Stream in the 2011 pilot survey data sets, and also 17 new quasars discovered in an area of ~100 deg^2^ that covers the central region and the southeastern halo of M31 in the 2010 commissioning data sets. These 526 new quasars have i magnitudes ranging from 15.5 to 20.0, redshifts from 0.1 to 3.2. They represent a significant increase of the number of identified quasars in the vicinity of M31 and M33. There are now 26, 62, and 139 known quasars in this region of the sky with i magnitudes brighter than 17.0, 17.5, and 18.0, respectively, of which 5, 20, and 75 are newly discovered. These bright quasars provide an invaluable collection with which to probe the kinematics and chemistry of the interstellar/intergalactic medium in the Local Group of galaxies. A total of 93 quasars are now known with locations within 2.5{deg} of M31, of which 73 are newly discovered. Tens of quasars are now known to be located behind the Giant Stellar Stream, and hundreds are behind the extended halo and its associated substructures of M31. The much enlarged sample of known quasars in the vicinity of M31 and M33 can potentially be utilized to construct a perfect astrometric reference frame to measure the minute proper motions (PMs) of M31 and M33, along with the PMs of substructures associated with the Local Group of galaxies. Those PMs are some of the most fundamental properties of the Local Group.2013AJ....145..159Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/145/159CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/139 : The SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012)VII/260 : The SDSS-DR7 quasar catalog (Schneider+, 2010)J/AJ/131/2478 : M31 and M33 UBVRI photometry (Massey+, 2006)J/AJ/144/49 : Quasars from SDSS-DR7, WISE and UKIDSS surveys (Wu+, 2012)J/AJ/130/873 : Properties of BQS objects in the SDSS DR3 area (Jester+, 2005)J/AJ/121/2308 : Sloan Digital Sky Survey quasar photometry (Richards+, 2001)J/AJ/114/2353 : AGNs and QSOs behind nearby galaxies (Crampton+, 1997)http://www.lamost.org/ : LAMOST public Web sitehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/145/159https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/145/159http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/145/159https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/145/159https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/145/159http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/145/159GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/145/159/table1 (Catalog of new quasars in the vicinity of M31 and M33 discovered by LAMOST in fields observed in 2010 and 2011)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/145/159/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/145/159/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/145/159/table1?GETtext/xml+votable180.050000true8.2321288939.772018060.0055555555555555564/134 163 5/525 527 551 556 558 559 560 562 644 645 647 659 664 677 6/2065 2066 2067 2068 2069 2072 2073 2075 2076 2078 2079 2097 2099 2105 2107 2122 2123 2126 2127 2160 2162 2168 2197 2198 2199 2221 2223 2228 2229 2230 2244 2246 2252 2253 2254 2272 2274 2280 2565 2586 2587 2599 2625 2626 2627 2629 2631 2633 2634 2635 2653 2661 2664 2665 2666 2675 2676 2678 2704 2705 2707 27522.040811542443644e-19 6.090060298487514e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/145/159?format=asciiOpticalInfrareddefaultJ/AJ/145/159/table1Catalog of new quasars in the vicinity of M31 and M33 discovered by LAMOST in fields observed in 2010 and 2011SloanDisplay the SDSS data for this quasarmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameTarget identifier (JHHMMSS.ss+DDMMSS.s) (1)meta.id;meta.maincharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainz[0.093/3.204] LAMOST redshiftsrc.redshiftfloatumag? Best SDSS u-band PSF magnitude if available (2)magphot.mag;em.opt.UfloatnullablegmagBest SDSS g-band PSF magnitude (2)magphot.mag;em.opt.BfloatrmagBest SDSS r-band PSF magnitude (2)magphot.mag;em.opt.RfloatimagBest SDSS i-band PSF magnitude (2)magphot.mag;em.opt.Ifloatzmag? Best SDSS z-band PSF magnitude if available (2)magphot.mag;em.opt.IfloatnullableAi[0.08/0.29] Galactic extinction in the i band (3)magphys.absorption.galfloatSelSelection criteria (W, S, M) (4)meta.codecharSDSSDisplay the data from the photometric SDSS-DR9 catalog within 1.5"meta.ref.urlchar