Cosmic voids and void lensing in the Dark Energy Survey Science Verification data
Abstract
Usually, cosmic voids are identified in spectroscopic galaxy surveys, where 3D information about the large-scale structure of the Universe is available. Although an increasing amount of photometric data is being produced, its potential for void studies is limited since photometric redshifts induce line-of-sight position errors of ≥50 Mpc h-1 which can render many voids undetectable. We present a new void finder designed for photometric surveys, validate it using simulations, and apply it to the high-quality photo-z redMaGiC galaxy sample of the DES Science Verification data. The algorithm works by projecting galaxies into 2D slices and finding voids in the smoothed 2D galaxy density field of the slice. Fixing the line-of-sight size of the slices to be at least twice the photo-z scatter, the number of voids found in simulated spectroscopic and photometric galaxy catalogues is within 20 per cent for all transverse void sizes, and indistinguishable for the largest voids (Rv ≥ 70 Mpc h-1). Furthermore, the positions, radii, and projected galaxy profiles of photometric voids accurately match the spectroscopic void sample. Applying the algorithm to the DES-SV data in the redshift range 0.2 < z < 0.8, we identify 87 voids with comoving radii spanning the range 18–120 Mpcmore »
- Authors:
- more »
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Org.:
- The DES Collaboration
- OSTI Identifier:
- 1337861
- Alternate Identifier(s):
- OSTI ID: 1324275; OSTI ID: 1334785; OSTI ID: 1353173
- Report Number(s):
- BNL-112544-2016-JA; FERMILAB-PUB-16-173-AE; arXiv:1605.03982
Journal ID: ISSN 0035-8711; KJ0402000; KJ0503000; ERKJ311; ERKJEPM; TRN: US1701330
- Grant/Contract Number:
- AC05-00OR22725; SC0012704; AC02-07CH11359; SEV-2012-0234; AST-1138766; AYA2012-39559; ESP2013-48274; FPA2013-47986; 240672; 291329; 306478; PF5-160138; FP7/2007-2013; AC02-76SF00515
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Monthly Notices of the Royal Astronomical Society
- Additional Journal Information:
- Journal Volume: 465; Journal Issue: 1; Journal ID: ISSN 0035-8711
- Publisher:
- Royal Astronomical Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 79 ASTRONOMY AND ASTROPHYSICS; gravitational lensing: weak; cosmology: observations; large-scale structure of Universe
Citation Formats
Sánchez, C., Clampitt, J., Kovacs, A., Jain, B., García-Bellido, J., Nadathur, S., Gruen, D., Hamaus, N., Huterer, D., Vielzeuf, P., Amara, A., Bonnett, C., DeRose, J., Hartley, W. G., Jarvis, M., Lahav, O., Miquel, R., Rozo, E., Rykoff, E. S., Sheldon, E., Wechsler, R. H., Zuntz, J., Abbott, T. M. C., Abdalla, F. B., Annis, J., Benoit-Lévy, A., Bernstein, G. M., Bernstein, R. A., Bertin, E., Brooks, D., Buckley-Geer, E., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., Crocce, M., Cunha, C. E., D'Andrea, C. B., da Costa, L. N., Desai, S., Diehl, H. T., Dietrich, J. P., Doel, P., Evrard, A. E., Neto, A. Fausti, Flaugher, B., Fosalba, P., Frieman, J., Gaztanaga, E., Gruendl, R. A., Gutierrez, G., Honscheid, K., James, D. J., Krause, E., Kuehn, K., Lima, M., Maia, M. A. G., Marshall, J. L., Melchior, P., Plazas, A. A., Reil, K., Romer, A. K., Sanchez, E., Schubnell, M., Sevilla-Noarbe, I., Smith, R. C., Soares-Santos, M., Sobreira, F., Suchyta, E., Tarle, G., Thomas, D., Walker, A. R., and Weller, J. Cosmic voids and void lensing in the Dark Energy Survey Science Verification data. United States: N. p., 2016.
Web. doi:10.1093/mnras/stw2745.
Sánchez, C., Clampitt, J., Kovacs, A., Jain, B., García-Bellido, J., Nadathur, S., Gruen, D., Hamaus, N., Huterer, D., Vielzeuf, P., Amara, A., Bonnett, C., DeRose, J., Hartley, W. G., Jarvis, M., Lahav, O., Miquel, R., Rozo, E., Rykoff, E. S., Sheldon, E., Wechsler, R. H., Zuntz, J., Abbott, T. M. C., Abdalla, F. B., Annis, J., Benoit-Lévy, A., Bernstein, G. M., Bernstein, R. A., Bertin, E., Brooks, D., Buckley-Geer, E., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., Crocce, M., Cunha, C. E., D'Andrea, C. B., da Costa, L. N., Desai, S., Diehl, H. T., Dietrich, J. P., Doel, P., Evrard, A. E., Neto, A. Fausti, Flaugher, B., Fosalba, P., Frieman, J., Gaztanaga, E., Gruendl, R. A., Gutierrez, G., Honscheid, K., James, D. J., Krause, E., Kuehn, K., Lima, M., Maia, M. A. G., Marshall, J. L., Melchior, P., Plazas, A. A., Reil, K., Romer, A. K., Sanchez, E., Schubnell, M., Sevilla-Noarbe, I., Smith, R. C., Soares-Santos, M., Sobreira, F., Suchyta, E., Tarle, G., Thomas, D., Walker, A. R., & Weller, J. Cosmic voids and void lensing in the Dark Energy Survey Science Verification data. United States. https://doi.org/10.1093/mnras/stw2745
Sánchez, C., Clampitt, J., Kovacs, A., Jain, B., García-Bellido, J., Nadathur, S., Gruen, D., Hamaus, N., Huterer, D., Vielzeuf, P., Amara, A., Bonnett, C., DeRose, J., Hartley, W. G., Jarvis, M., Lahav, O., Miquel, R., Rozo, E., Rykoff, E. S., Sheldon, E., Wechsler, R. H., Zuntz, J., Abbott, T. M. C., Abdalla, F. B., Annis, J., Benoit-Lévy, A., Bernstein, G. M., Bernstein, R. A., Bertin, E., Brooks, D., Buckley-Geer, E., Rosell, A. Carnero, Kind, M. Carrasco, Carretero, J., Crocce, M., Cunha, C. E., D'Andrea, C. B., da Costa, L. N., Desai, S., Diehl, H. T., Dietrich, J. P., Doel, P., Evrard, A. E., Neto, A. Fausti, Flaugher, B., Fosalba, P., Frieman, J., Gaztanaga, E., Gruendl, R. A., Gutierrez, G., Honscheid, K., James, D. J., Krause, E., Kuehn, K., Lima, M., Maia, M. A. G., Marshall, J. L., Melchior, P., Plazas, A. A., Reil, K., Romer, A. K., Sanchez, E., Schubnell, M., Sevilla-Noarbe, I., Smith, R. C., Soares-Santos, M., Sobreira, F., Suchyta, E., Tarle, G., Thomas, D., Walker, A. R., and Weller, J. Wed .
"Cosmic voids and void lensing in the Dark Energy Survey Science Verification data". United States. https://doi.org/10.1093/mnras/stw2745. https://www.osti.gov/servlets/purl/1337861.
@article{osti_1337861,
title = {Cosmic voids and void lensing in the Dark Energy Survey Science Verification data},
author = {Sánchez, C. and Clampitt, J. and Kovacs, A. and Jain, B. and García-Bellido, J. and Nadathur, S. and Gruen, D. and Hamaus, N. and Huterer, D. and Vielzeuf, P. and Amara, A. and Bonnett, C. and DeRose, J. and Hartley, W. G. and Jarvis, M. and Lahav, O. and Miquel, R. and Rozo, E. and Rykoff, E. S. and Sheldon, E. and Wechsler, R. H. and Zuntz, J. and Abbott, T. M. C. and Abdalla, F. B. and Annis, J. and Benoit-Lévy, A. and Bernstein, G. M. and Bernstein, R. A. and Bertin, E. and Brooks, D. and Buckley-Geer, E. and Rosell, A. Carnero and Kind, M. Carrasco and Carretero, J. and Crocce, M. and Cunha, C. E. and D'Andrea, C. B. and da Costa, L. N. and Desai, S. and Diehl, H. T. and Dietrich, J. P. and Doel, P. and Evrard, A. E. and Neto, A. Fausti and Flaugher, B. and Fosalba, P. and Frieman, J. and Gaztanaga, E. and Gruendl, R. A. and Gutierrez, G. and Honscheid, K. and James, D. J. and Krause, E. and Kuehn, K. and Lima, M. and Maia, M. A. G. and Marshall, J. L. and Melchior, P. and Plazas, A. A. and Reil, K. and Romer, A. K. and Sanchez, E. and Schubnell, M. and Sevilla-Noarbe, I. and Smith, R. C. and Soares-Santos, M. and Sobreira, F. and Suchyta, E. and Tarle, G. and Thomas, D. and Walker, A. R. and Weller, J.},
abstractNote = {Usually, cosmic voids are identified in spectroscopic galaxy surveys, where 3D information about the large-scale structure of the Universe is available. Although an increasing amount of photometric data is being produced, its potential for void studies is limited since photometric redshifts induce line-of-sight position errors of ≥50 Mpc h-1 which can render many voids undetectable. We present a new void finder designed for photometric surveys, validate it using simulations, and apply it to the high-quality photo-z redMaGiC galaxy sample of the DES Science Verification data. The algorithm works by projecting galaxies into 2D slices and finding voids in the smoothed 2D galaxy density field of the slice. Fixing the line-of-sight size of the slices to be at least twice the photo-z scatter, the number of voids found in simulated spectroscopic and photometric galaxy catalogues is within 20 per cent for all transverse void sizes, and indistinguishable for the largest voids (Rv ≥ 70 Mpc h-1). Furthermore, the positions, radii, and projected galaxy profiles of photometric voids accurately match the spectroscopic void sample. Applying the algorithm to the DES-SV data in the redshift range 0.2 < z < 0.8, we identify 87 voids with comoving radii spanning the range 18–120 Mpc h-1, and carry out a stacked weak lensing measurement. With a significance of 4.4σ, the lensing measurement confirms that the voids are truly underdense in the matter field and hence not a product of Poisson noise, tracer density effects or systematics in the data. Also, it demonstrates, for the first time in real data, the viability of void lensing studies in photometric surveys.},
doi = {10.1093/mnras/stw2745},
journal = {Monthly Notices of the Royal Astronomical Society},
number = 1,
volume = 465,
place = {United States},
year = {Wed Oct 26 00:00:00 EDT 2016},
month = {Wed Oct 26 00:00:00 EDT 2016}
}
Web of Science
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