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dc.contributor.authorLuque Canaza, Elmer Fidelpt_BR
dc.contributor.authorQueiroz, Anna Bárbara de Andradept_BR
dc.contributor.authorSantiago, Basilio Xavierpt_BR
dc.contributor.authorPieres, Adrianopt_BR
dc.contributor.authorBalbinot, Eduardopt_BR
dc.contributor.authorBechtol, Keithpt_BR
dc.contributor.authorDrlica-Wagner, Alexpt_BR
dc.contributor.authorFausti Neto, Angelopt_BR
dc.contributor.authorCosta, Luiz N. dapt_BR
dc.contributor.authorMaia, Marcio Antonio Geimbapt_BR
dc.contributor.authorYanny, Brianpt_BR
dc.contributor.authorAbbott, Timothy M. C.pt_BR
dc.contributor.authorAllam, Sahar S.pt_BR
dc.contributor.authorBenoit-Lévy, Aurélienpt_BR
dc.contributor.authorBertin, Emmanuelpt_BR
dc.contributor.authorBrooks, D.pt_BR
dc.contributor.authorBuckley-Geer, Elizabethpt_BR
dc.contributor.authorBurke, David Lylept_BR
dc.contributor.authorCarnero Rosell, Aureliopt_BR
dc.contributor.authorCarrasco Kind, Matíaspt_BR
dc.contributor.authorCarretero Palacios, Jorgept_BR
dc.contributor.authorCunha, Carlos Eduardopt_BR
dc.contributor.authorDesai, S.pt_BR
dc.contributor.authorDiehl, H. Thomaspt_BR
dc.contributor.authorDietrich, Jörg P.pt_BR
dc.contributor.authorEifler, Timpt_BR
dc.contributor.authorFinley, David A.pt_BR
dc.contributor.authorFlaugher, Brennapt_BR
dc.contributor.authorFosalba Vela, Pablopt_BR
dc.contributor.authorFrieman, Joshua A.pt_BR
dc.contributor.authorGerdes, David W.pt_BR
dc.contributor.authorGruen, Danielpt_BR
dc.contributor.authorGutierrez, Gaston R.pt_BR
dc.contributor.authorHonscheid, K.pt_BR
dc.contributor.authorJames, David J.pt_BR
dc.contributor.authorKuehn, Kylerpt_BR
dc.contributor.authorKuropatkin, Nikolay P.pt_BR
dc.contributor.authorLahav, Oferpt_BR
dc.contributor.authorLi, T. S.pt_BR
dc.contributor.authorMarch, Marisa Cristinapt_BR
dc.contributor.authorMarshall, Jennifer L.pt_BR
dc.contributor.authorMartini, Paulpt_BR
dc.contributor.authorMiquel, Ramonpt_BR
dc.contributor.authorNeilsen, Eric H.pt_BR
dc.contributor.authorNichol, Robert C.pt_BR
dc.contributor.authorNord, Brian Dennispt_BR
dc.contributor.authorOgando, Ricardo L.C.pt_BR
dc.contributor.authorPlazas Malagón, Andrés Alejandropt_BR
dc.contributor.authorRomer, Anita K.pt_BR
dc.contributor.authorRoodman, Aaronpt_BR
dc.contributor.authorSanchez-Alvaro, Eusebiopt_BR
dc.contributor.authorScarpine, Victor Emanuelpt_BR
dc.contributor.authorSchubnell, Michaelpt_BR
dc.contributor.authorSevilla Noarbe, Ignaciopt_BR
dc.contributor.authorSmith, Robert Christopherpt_BR
dc.contributor.authorSoares-Santos, Marcellept_BR
dc.contributor.authorSobreira, Fláviapt_BR
dc.contributor.authorSuchyta, Ericpt_BR
dc.contributor.authorSwanson, Molly E. C.pt_BR
dc.contributor.authorTarle, Gregorypt_BR
dc.contributor.authorThaler, Jon J.pt_BR
dc.contributor.authorTucker, Douglas L.pt_BR
dc.contributor.authorWalker, Alistairpt_BR
dc.contributor.authorZhang, Y.pt_BR
dc.contributor.authorDES Collaborationpt_BR
dc.date.accessioned2016-10-15T02:14:27Zpt_BR
dc.date.issued2016pt_BR
dc.identifier.issn0035-8711pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/149058pt_BR
dc.description.abstractWe use the first-year Dark Energy Survey (DES) data down to previously unprobed photometric depths to search for stellar systems in the Galactic halo, therefore complementing the previous analysis of the same data carried out by our group earlier this year. Our search is based on a matched filter algorithm that produces stellar density maps consistent with stellar population models of various ages, metallicities, and distances over the survey area. The most conspicuous density peaks in these maps have been identified automatically and ranked according to their significance and recurrence for different input models. We report the discovery of one additional stellar system besides those previously found by several authors using the same first-year DES data. The object is compact, and consistent with being dominated by an old and metal-poor population. DES 1 is found at high significance and appears in the DES images as a compact concentration of faint blue point sources. Assuming different spatial profile parameterizations, the best-fitting heliocentric distance and total absolute magnitude in the range of 77.6–87.1 kpc and −3.00 MV −2.21, respectively. The half-light radius of this object, rh ∼ 10 pc and total luminosity are consistent with it being a low-mass halo cluster. It is also found to have a very elongated shape ( ∼ 0.57). In addition, our deeper probe of DES first-year data confirms the recently reported satellite galaxy candidate Horologium II as a significant stellar overdensity. We also infer its structural properties and compare them to those reported in the literature.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofMonthly notices of the Royal Astronomical Society. Oxford. Vol. 458, no. 1 (May 2016), p. 603-612pt_BR
dc.rightsOpen Accessen
dc.subjectGlobular clusters: generalen
dc.subjectAglomerados globularespt_BR
dc.subjectGlobular clusters: individual (DES 1)en
dc.subjectMapeamentos astronômicospt_BR
dc.subjectGalaxies: dwarfen
dc.subjectGaláxiaspt_BR
dc.subjectEnergia escurapt_BR
dc.titleDigging deeper into the Southern skies : a compact Milky Way companion discovered in first-year Dark Energy Survey datapt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb001002684pt_BR
dc.type.originEstrangeiropt_BR


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