The Multiwavelength Survey by Yale-Chile (MUSYC)

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dc.contributor.authorBlanc, Guillermo A.
dc.contributor.authorLira, Paulina
dc.contributor.authorBarrientos, L. Felipe
dc.contributor.authorAguirre, Paula
dc.contributor.authorFrancke, Harold
dc.contributor.authorTaylor, Edward N.
dc.contributor.authorQuadri, Ryan
dc.contributor.authorMarchesini, Danilo
dc.contributor.authorInfante, Leopoldo
dc.contributor.authorGawiser, Eric
dc.contributor.authorHall, Patrick B.
dc.contributor.authorWillis, Jon P.
dc.contributor.authorHerrera, David
dc.contributor.authorMaza, Jose
dc.date.accessioned2025-01-21T01:05:02Z
dc.date.available2025-01-21T01:05:02Z
dc.date.issued2008
dc.description.abstractWe present K-band imaging of two similar to 30' x 30' fields covered by the Multiwavelength Survey by Yale-Chile (MUSYC) Wide NIR Survey. The SDSS 1030+05 and Cast 1255 fields were imaged with the Infrared Side Port Imager (ISPI) on the 4 m Blanco telescope at the Cerro Tololo Inter-American Observatory (CTIO) to a 5 sigma point-source limiting depth of K similar to 20 (Vega). Combining these data with the MUSYC optical UBVRIz imaging, we created multiband K-selected source catalogs for both fields. These catalogs, together with the MUSYC K-band catalog of the Extended Chandra Deep Field South (ECDF-S) field, were used to select K 20 BzK galaxies over an area of 0.71 deg(2). This is the largest area ever surveyed for BzK galaxies. We present number counts, redshift distributions, and stellar masses for our sample of 3261 BzK galaxies (2502 star-forming [sBzK] and 759 passively evolving [pBzK]), as well as reddening and star formation rate estimates for the star-forming BzK systems. We also present two-point angular correlation functions and spatial correlation lengths for both sBzK and pBzK galaxies and show that previous estimates of the correlation function of these galaxies were affected by cosmic variance due to the small areas surveyed. We have measured correlation lengths r(0) of 8.89 +/- 2.03 and 10.82 +/- 1.72 Mpc for sBzK and pBzK galaxies, respectively. This is the first reported measurement of the spatial correlation function of passive BzK galaxies. In the Lambda CDM scenario of galaxy formation, these correlation lengths at z similar to 2 translate into minimum masses of similar to 4 x 10(12) and similar to 9 x 10(12) M-circle dot for the dark matter halos hosting sBzK and pBzK galaxies, respectively. The clustering properties of the galaxies in our sample are consistent with their being the descendants of bright Lyman break galaxies at z similar to 3, and the progenitors of present-day > 1L* galaxies.
dc.fuente.origenWOS
dc.identifier.eissn1538-4357
dc.identifier.issn0004-637X
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95788
dc.identifier.wosidWOS:000257516000026
dc.issue.numero2
dc.language.isoen
dc.pagina.final1115
dc.pagina.inicio1099
dc.revistaAstrophysical journal
dc.rightsacceso restringido
dc.subjectcatalogs
dc.subjectgalaxies : evolution
dc.subjectgalaxies : high-redshift
dc.subjectgalaxies : statistics
dc.subjectlarge-scale structure of universe
dc.subjectsurveys
dc.titleThe Multiwavelength Survey by Yale-Chile (MUSYC)
dc.typeartículo
dc.volumen681
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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