Clustering Properties of restframe UV selected galaxies I: the correlation length derived from GALEX data in the local Universe - AstrophysicsReportar como inadecuado




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Abstract: We present the first measurements of the angular correlation function ofgalaxies selected in the far 1530 A and near 2310 A Ultraviolet from theGALEX survey fields overlapping SDSS DR5 in low galactic extinction regions.The area used covers 120 sqdeg GALEX - MIS down to magnitude AB = 22,yielding a total of 100,000 galaxies. The mean correlation length is ~ 3.7 \pm0.6 Mpc and no significant trend is seen for this value as a function of thelimiting apparent magnitude or between the GALEX bands. This estimate is closeto that found from samples of blue galaxies in the local universe selected inthe visible, and similar to that derived at z ~ 3 for LBGs with similar restframe selection criteria. This result supports models that predict anti-biasingof star forming galaxies at low redshift, and brings an additional clue to thedownsizing of star formation at z<1.



Autor: Bruno Milliard, Sebastien Heinis, Jeremy Blaizot, Stephane Arnouts, David Schiminovich, Tamas Budavari, Jose Donas, Marie Treyer,

Fuente: https://arxiv.org/







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