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GLACiAR, an Open-Source Python Tool for Simulations of Source Recovery and Completeness in Galaxy Surveys

  • D. Carrasco (a1), M. Trenti (a1) (a2), S. Mutch (a1) (a2) and P. A. Oesch (a3)

The luminosity function is a fundamental observable for characterising how galaxies form and evolve throughout the cosmic history. One key ingredient to derive this measurement from the number counts in a survey is the characterisation of the completeness and redshift selection functions for the observations. In this paper, we present GLACiAR, an open python tool available on GitHub to estimate the completeness and selection functions in galaxy surveys. The code is tailored for multiband imaging surveys aimed at searching for high-redshift galaxies through the Lyman-break technique, but it can be applied broadly. The code generates artificial galaxies that follow Sérsic profiles with different indexes and with customisable size, redshift, and spectral energy distribution properties, adds them to input images, and measures the recovery rate. To illustrate this new software tool, we apply it to quantify the completeness and redshift selection functions for J-dropouts sources (redshift z ~ 10 galaxies) in the Hubble Space Telescope Brightest of Reionizing Galaxies Survey. Our comparison with a previous completeness analysis on the same dataset shows overall agreement, but also highlights how different modelling assumptions for the artificial sources can impact completeness estimates.

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Atek, H., et al. 2015, ApJ, 800, 1810.1088/0004-637X/800/1/182015ApJ...800...18A
Beckwith, S. V. W., et al. 2006, AJ, 132, 172910.1086/5073022006AJ....132.1729B
Bernard, S. R., et al. 2016, ApJ, 827, 7610.3847/0004-637X/827/1/762016ApJ...827...76B
Bershady, M. A., Lowenthal, J. D., & Koo, D. C. 1998, ApJ, 505, 5010.1086/3061301998ApJ...505...50B
Bertin, E., & Arnouts, S. 1996, A&AS, 117, 39310.1051/aas:19961641996A&AS..117..393B
Bouwens, R. J., et al. 2014, ApJ, 793, 11510.1088/0004-637X/793/2/1152014ApJ...793..115B
Bouwens, R. J., et al. 2015, ApJ, 803, 3410.1088/0004-637X/803/1/342015ApJ...803...34B
Bouwens, R. J., et al. 2016, ApJ, 830, 6710.3847/0004-637X/830/2/672016ApJ...830...67B
Bowler, R. A. A., et al. 2014, MNRAS, 440, 281010.1093/mnras/stu4492014MNRAS.440.2810B
Bowler, R. A. A., et al. 2015, MNRAS, 452, 181710.1093/mnras/stv14032015MNRAS.452.1817B
Bradley, L. D., et al. 2012, ApJ, 760, 10810.1088/0004-637X/760/2/1082012ApJ...760..108B
Bradley, L., et al. 2016, astropy/photutils: v0.3, doi:10.5281/zenodo. 16498610.5281/zenodo.164986,
Calvi, V., et al. 2016, ApJ, 817, 12010.3847/0004-637X/817/2/1202016ApJ...817..120C
Ciotti, L. 1991, A&A, 249, 991991A&A...249...99C
Coe, D., Benítez, N., Sánchez, S. F., Jee, M., Bouwens, R., & Ford, H. 2006, AJ, 132, 92610.1086/5055302006AJ....132..926C
Coe, D., et al. 2013, ApJ, 762, 3210.1088/0004-637X/762/1/322013ApJ...762...32C
Cristóbal-Hornillos, D., et al. 2009, ApJ, 696, 155410.1088/0004-637X/696/2/15542009ApJ...696.1554C
de Vaucouleurs, G. 1948, AnAp, 11, 2471948AnAp...11..247D
Egami, E., et al. 2010, A&A, 518, L1210.1051/0004-6361/2010146962010A&A...518L..12E
Giavalisco, M., et al. 2004, ApJ, 600, L9310.1086/3792322004ApJ...600L..93G
Graham, A. W., & Driver, S. P. 2005, PASA, 22, 11810.1071/AS050012005PASA...22..118G
Hathi, N. P., et al. 2010, ApJ, 720, 170810.1088/0004-637X/720/2/17082010ApJ...720.1708H
Häussler, B., et al. 2007, ApJS, 172, 61510.1086/5188362007ApJS..172..615H
Häußler, B., et al. 2013, MNRAS, 430, 33010.1093/mnras/sts6332013MNRAS.430..330H
Imai, K., Matsuhara, H., Oyabu, S., Wada, T., Takagi, T., Fujishiro, N., Hanami, H., & Pearson, C. P. 2007, AJ, 133, 241810.1086/5135132007AJ....133.2418I
Ishigaki, M., Kawamata, R., Ouchi, M., Oguri, M., & Shimasaku, K. 2017, ApJ, 854, 73
Jiang, L., et al. 2011, ApJ, 743, 6510.1088/0004-637X/743/1/652011ApJ...743...65J
Koekemoer, A. M., Fruchter, A. S., Hook, R. N., & Hack, W. 2003, in HST Calibration Workshop: Hubble after the Installation of the ACS and the NICMOS Cooling System, eds. Arribas, S., Koekemoer, A., & Whitmore, B. (Baltimore, MD: Space Telescope Science Institute), 337
Koekemoer, A. M., et al. 2011, ApJS, 197, 3610.1088/0067-0049/197/2/362011ApJS..197...36K
Lotz, J. M., et al. 2017, ApJ, 837, 9710.3847/1538-4357/837/1/972017ApJ...837...97L
Mobasher, B., et al. 2005, ApJ, 635, 83210.1086/4976262005ApJ...635..832M
Oesch, P. A., et al. 2014, ApJ, 786, 10810.1088/0004-637X/786/2/1082014ApJ...786..108O
Oesch, P. A., et al. 2016, ApJ, 819, 12910.3847/0004-637X/819/2/1292016ApJ...819..129O
Peng, C. Y., Ho, L. C., Impey, C. D., & Rix, H.-W. 2002, AJ, 124, 26610.1086/3409522002AJ....124..266P
Postman, M., et al. 2012, ApJS, 199, 2510.1088/0067-0049/199/2/252012ApJS..199...25P
Schmidt, K. B., et al. 2014, ApJ, 786, 5710.1088/0004-637X/786/1/572014ApJ...786...57S
Sérsic, J. L. 1968, Atlas de galaxias australes (Cordoba, Argentina: Observatorio Astronomico)
Stanway, E. R., Bremer, M. N., & Lehnert, M. D. 2008, MNRAS, 385, 49310.1111/j.1365-2966.2008.12853.x2008MNRAS.385..493S
Steidel, C. C., Giavalisco, M., Dickinson, M., & Adelberger, K. L. 1996, AJ, 112, 35210.1086/1180191996AJ....112..352S
Trenti, M., Stiavelli, M., Bouwens, R. J., Oesch, P., Shull, J. M., Illingworth, G. D., Bradley, L. D., & Carollo, C. M. 2010, ApJ, 714, L20210.1088/2041-8205/714/2/L2022010ApJ...714L.202T
Trenti, M., et al. 2011, ApJ, 727, L3910.1088/2041-8205/727/2/L392011ApJ...727L..39T
Trenti, M., et al. 2012, ApJ, 746, 5510.1088/0004-637X/746/1/552012ApJ...746...55T
Williams, R. E., et al. 1996a, AJ, 112, 133510.1086/1181051996AJ....112.1335W
Williams, R. E., et al. 1996b, AJ, 112, 133510.1086/1181051996AJ....112.1335W
Yan, H., et al. 2011, ApJ, 728, L2210.1088/2041-8205/728/1/L222011ApJ...728L..22Y
Zitrin, A., et al. 2014, ApJ, 793, L1210.1088/2041-8205/793/1/L122014ApJ...793L..12Z
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Publications of the Astronomical Society of Australia
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