Fig. 8 from Faint Galaxies in Deep Advanced Camera for Surveys Observations

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Faint Galaxies in Deep Advanced Camera for Surveys Observations

Authors: N. Benítez, H. Ford, R. Bouwens, F. Menanteau, J. Blakeslee, C. Gronwall, G. Illingworth, G. Meurer, T. J. Broadhurst, M. Clampin, M. Franx, G. F. Hartig, D. Magee, M. Sirianni, D. R. Ardila, F. Bartko, R. A. Brown, C. J. Burrows, E. S. Cheng, N. J. G. Cross, P. D. Feldman, D. A. Golimowski, L. Infante, R. A. Kimble, J. E. Krist, M. P. Lesser, Z. Levay, A. R. Martel, G. K. Miley, M. Postman, P. Rosati, W. B. Sparks, H. D. Tran, Z. I. Tsvetanov, R. L. White, and W. Zheng

Benítez et al. 2004 The Astrophysical Journal Supplement Series 150 1.

Provider: AAS Journals

Caption: Fig. 8.

Dependence of the number of spurious and undetected objects due to deblending errors as a function of magnitude for the optimal values of the SExtractor parameters DEBLEND_MINCONT = 0.025 and DEBLEND_NTHRESH = 16 (see text). We also show how using different values, e.g., DEBLEND_MINCONT = 0.01 and DEBLEND_NTHRESH = 32 leaves almost unaffected the number of undetected galaxies, but more than doubles the number of spurious objects, significantly changing the normalization and shape of the number count distribution.

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