Weak lensing magnification in the Dark Energy Survey Science Verification data

Abstract In this paper, the effect of weak lensing magnification on galaxy number counts is studied by cross-correlating the positions of two galaxy samples, separated by redshift, using the Dark Energy Survey Science Verification data set. This analysis is carried out for galaxies that are selected...

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Veröffentlicht in:	Monthly notices of the Royal Astronomical Society 2018-05, Vol.476 (1), p.1071-1085
Hauptverfasser:	Garcia-Fernandez, M, Sanchez, E, Sevilla-Noarbe, I, Suchyta, E, Huff, E M, Gaztanaga, E, Aleksić, J, Ponce, R, Castander, F J, Hoyle, B, Abbott, T M C, Abdalla, F B, Allam, S, Annis, J, Benoit-Lévy, A, Bernstein, G M, Bertin, E, Brooks, D, Buckley-Geer, E, Burke, D L, Carnero Rosell, A, Carrasco Kind, M, Carretero, J, Crocce, M, Cunha, C E, D'Andrea, C B, da Costa, L N, DePoy, D L, Desai, S, Diehl, H T, Eifler, T F, Evrard, A E, Fernandez, E, Flaugher, B, Fosalba, P, Frieman, J, García-Bellido, J, Gerdes, D W, Giannantonio, T, Gruen, D, Gruendl, R A, Gschwend, J, Gutierrez, G, James, D J, Jarvis, M, Kirk, D, Krause, E, Kuehn, K, Kuropatkin, N, Lahav, O, Lima, M, MacCrann, N, Maia, M A G, March, M, Marshall, J L, Melchior, P, Miquel, R, Mohr, J J, Plazas, A A, Romer, A K, Roodman, A, Rykoff, E S, Scarpine, V, Schubnell, M, Smith, R C, Soares-Santos, M, Sobreira, F, Tarle, G, Thomas, D, Walker, A R, Wester, W, (The DES Collaboration)
Format:	Artikel
Sprache:	eng
Schlagworte:	ASTRONOMY AND ASTROPHYSICS Astrophysics gravitational lensing: weak large-scale structure of Universe methods: data analysis Physics techniques: photometric
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Beschreibung
Zusammenfassung:	Abstract In this paper, the effect of weak lensing magnification on galaxy number counts is studied by cross-correlating the positions of two galaxy samples, separated by redshift, using the Dark Energy Survey Science Verification data set. This analysis is carried out for galaxies that are selected only by its photometric redshift. An extensive analysis of the systematic effects, using new methods based on simulations is performed, including a Monte Carlo sampling of the selection function of the survey.
ISSN:	0035-8711 1365-2966
DOI:	10.1093/mnras/sty282