A catalogue of structural and morphological measurements for DES Y1

F. Tarsitano; W. G. Hartley; A. Amara; A. Bluck; C. Bruderer; M. Carollo; C. Conselice; P. Melchior; B. Moraes; A. Refregier; I. Sevilla-Noarbe; J. Woo; T. M.C. Abbott; S. Allam; J. Annis; S. Avila; M. Banerji; E. Bertin; D. Brooks; D. L. Burke; A. Carnero Rosell; M. Carrasco Kind; J. Carretero; C. E. Cunha; C. B. D'Andrea; L. N. da Costa; C. Davis; J. De Vicente; S. Desai; P. Doel; J. Estrada; J. Frieman; J. García-Bellido; D. Gruen; R. A. Gruendl; G. Gutierrez; D. Hollowood; K. Honscheid; D. J. James; T. Jeltema; E. Krause; K. Kuehn; N. Kuropatkin; O. Lahav; M. A.G. Maia; F. Menanteau; R. Miquel; A. A. Plazas; A. K. Romer; A. Roodman; E. Sanchez; B. Santiago; R. Schindler; M. Smith; R. C. Smith; M. Soares-Santos; F. Sobreira; E. Suchyta; M. E.C. Swanson; G. Tarle; D. Thomas; V. Vikram; A. R. Walker

doi:10.1093/MNRAS/STY1970

A catalogue of structural and morphological measurements for DES Y1

F. Tarsitano, W. G. Hartley, A. Amara, A. Bluck, C. Bruderer, M. Carollo, C. Conselice, P. Melchior, B. Moraes, A. Refregier, I. Sevilla-Noarbe, J. Woo, T. M.C. Abbott, S. Allam, J. Annis, S. Avila, M. Banerji, E. Bertin, D. Brooks, D. L. BurkeA. Carnero Rosell, M. Carrasco Kind, J. Carretero, C. E. Cunha, C. B. D'Andrea, L. N. da Costa, C. Davis, J. De Vicente, S. Desai, P. Doel, J. Estrada, J. Frieman, J. García-Bellido, D. Gruen, R. A. Gruendl, G. Gutierrez, D. Hollowood, K. Honscheid, D. J. James, T. Jeltema, E. Krause, K. Kuehn, N. Kuropatkin, O. Lahav, M. A.G. Maia, F. Menanteau, R. Miquel, A. A. Plazas, A. K. Romer, A. Roodman, E. Sanchez, B. Santiago, R. Schindler, M. Smith, R. C. Smith, M. Soares-Santos, F. Sobreira, E. Suchyta, M. E.C. Swanson, G. Tarle, D. Thomas, V. Vikram, A. R. Walker

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Abstract

© 2018 The Author(s). We present a structural and morphological catalogue for 45 million objects selected from the first year data of the Dark Energy Survey (DES). Single Sérsic fits and non-parametric measurements are produced for g, r, and i filters. The parameters from the best-fitting Sérsic model (total magnitude, half-light radius, Sérsic index, axis ratio, and position angle) are measured with GALFIT; the non-parametric coefficients (concentration, asymmetry, clumpiness, Gini, M20) are provided using the Zurich Estimator of Structural Types (ZEST+). To study the statistical uncertainties, we consider a sample of state-of-the-art image simulations with a realistic distribution in the input parameter space and then process and analyse them as we do with real data: this enables us to quantify the observational biases due to PSF blurring and magnitude effects and correct themeasurements as a function ofmagnitude, galaxy size, Sérsic index (concentration for the analysis of the non-parametric measurements) and ellipticity. We present the largest structural catalogue to date: we find that accurate and complete measurements for all the structural parameters are typically obtained for galaxies with SEXTRACTOR MAG AUTO I ≤ 21. Indeed, the parameters in the filters i and r can be overall well recovered up to MAG AUTO ≤ 21.5, corresponding to a fitting completeness of ~90 per cent below this threshold, for a total of 25million galaxies. The combination of parametric and non-parametric structural measurements makes this catalogue an important instrument to explore and understand how galaxies form and evolve. The catalogue described in this paper will be publicly released alongside the DES collaboration Y1 cosmology data products at the following URL: https://des.ncsa.illinois.edu/releases.

Original language	English
Pages (from-to)	2018-2040
Journal	Monthly Notices of the Royal Astronomical Society
Volume	481
DOIs	https://doi.org/10.1093/MNRAS/STY1970
Publication status	Published - 1 Dec 2018

Keywords

Catalogues
Galaxies: general
Galaxy evolution
Galaxy structure
Surveys

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10.1093/MNRAS/STY1970

Cite this

Tarsitano, F., Hartley, W. G., Amara, A., Bluck, A., Bruderer, C., Carollo, M., Conselice, C., Melchior, P., Moraes, B., Refregier, A., Sevilla-Noarbe, I., Woo, J., Abbott, T. M. C., Allam, S., Annis, J., Avila, S., Banerji, M., Bertin, E., Brooks, D., ... Walker, A. R. (2018). A catalogue of structural and morphological measurements for DES Y1. Monthly Notices of the Royal Astronomical Society, 481, 2018-2040. https://doi.org/10.1093/MNRAS/STY1970

@article{8729fcd27c8e4aea807266986fed76a8,

title = "A catalogue of structural and morphological measurements for DES Y1",

abstract = "{\textcopyright} 2018 The Author(s). We present a structural and morphological catalogue for 45 million objects selected from the first year data of the Dark Energy Survey (DES). Single S{\'e}rsic fits and non-parametric measurements are produced for g, r, and i filters. The parameters from the best-fitting S{\'e}rsic model (total magnitude, half-light radius, S{\'e}rsic index, axis ratio, and position angle) are measured with GALFIT; the non-parametric coefficients (concentration, asymmetry, clumpiness, Gini, M20) are provided using the Zurich Estimator of Structural Types (ZEST+). To study the statistical uncertainties, we consider a sample of state-of-the-art image simulations with a realistic distribution in the input parameter space and then process and analyse them as we do with real data: this enables us to quantify the observational biases due to PSF blurring and magnitude effects and correct themeasurements as a function ofmagnitude, galaxy size, S{\'e}rsic index (concentration for the analysis of the non-parametric measurements) and ellipticity. We present the largest structural catalogue to date: we find that accurate and complete measurements for all the structural parameters are typically obtained for galaxies with SEXTRACTOR MAG AUTO I ≤ 21. Indeed, the parameters in the filters i and r can be overall well recovered up to MAG AUTO ≤ 21.5, corresponding to a fitting completeness of ~90 per cent below this threshold, for a total of 25million galaxies. The combination of parametric and non-parametric structural measurements makes this catalogue an important instrument to explore and understand how galaxies form and evolve. The catalogue described in this paper will be publicly released alongside the DES collaboration Y1 cosmology data products at the following URL: https://des.ncsa.illinois.edu/releases.",

keywords = "Catalogues, Galaxies: general, Galaxy evolution, Galaxy structure, Surveys",

author = "F. Tarsitano and Hartley, {W. G.} and A. Amara and A. Bluck and C. Bruderer and M. Carollo and C. Conselice and P. Melchior and B. Moraes and A. Refregier and I. Sevilla-Noarbe and J. Woo and Abbott, {T. M.C.} and S. Allam and J. Annis and S. Avila and M. Banerji and E. Bertin and D. Brooks and Burke, {D. L.} and {Carnero Rosell}, A. and {Carrasco Kind}, M. and J. Carretero and Cunha, {C. E.} and D'Andrea, {C. B.} and {da Costa}, {L. N.} and C. Davis and {De Vicente}, J. and S. Desai and P. Doel and J. Estrada and J. Frieman and J. Garc{\'i}a-Bellido and D. Gruen and Gruendl, {R. A.} and G. Gutierrez and D. Hollowood and K. Honscheid and James, {D. J.} and T. Jeltema and E. Krause and K. Kuehn and N. Kuropatkin and O. Lahav and Maia, {M. A.G.} and F. Menanteau and R. Miquel and Plazas, {A. A.} and Romer, {A. K.} and A. Roodman and E. Sanchez and B. Santiago and R. Schindler and M. Smith and Smith, {R. C.} and M. Soares-Santos and F. Sobreira and E. Suchyta and Swanson, {M. E.C.} and G. Tarle and D. Thomas and V. Vikram and Walker, {A. R.}",

year = "2018",

month = dec,

day = "1",

doi = "10.1093/MNRAS/STY1970",

language = "English",

volume = "481",

pages = "2018--2040",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

}

Tarsitano, F, Hartley, WG, Amara, A, Bluck, A, Bruderer, C, Carollo, M, Conselice, C, Melchior, P, Moraes, B, Refregier, A, Sevilla-Noarbe, I, Woo, J, Abbott, TMC, Allam, S, Annis, J, Avila, S, Banerji, M, Bertin, E, Brooks, D, Burke, DL, Carnero Rosell, A, Carrasco Kind, M, Carretero, J, Cunha, CE, D'Andrea, CB, da Costa, LN, Davis, C, De Vicente, J, Desai, S, Doel, P, Estrada, J, Frieman, J, García-Bellido, J, Gruen, D, Gruendl, RA, Gutierrez, G, Hollowood, D, Honscheid, K, James, DJ, Jeltema, T, Krause, E, Kuehn, K, Kuropatkin, N, Lahav, O, Maia, MAG, Menanteau, F, Miquel, R, Plazas, AA, Romer, AK, Roodman, A, Sanchez, E, Santiago, B, Schindler, R, Smith, M, Smith, RC, Soares-Santos, M, Sobreira, F, Suchyta, E, Swanson, MEC, Tarle, G, Thomas, D, Vikram, V & Walker, AR 2018, 'A catalogue of structural and morphological measurements for DES Y1', Monthly Notices of the Royal Astronomical Society, vol. 481, pp. 2018-2040. https://doi.org/10.1093/MNRAS/STY1970

TY - JOUR

T1 - A catalogue of structural and morphological measurements for DES Y1

AU - Tarsitano, F.

AU - Hartley, W. G.

AU - Amara, A.

AU - Bluck, A.

AU - Bruderer, C.

AU - Carollo, M.

AU - Conselice, C.

AU - Melchior, P.

AU - Moraes, B.

AU - Refregier, A.

AU - Sevilla-Noarbe, I.

AU - Woo, J.

AU - Abbott, T. M.C.

AU - Allam, S.

AU - Annis, J.

AU - Avila, S.

AU - Banerji, M.

AU - Bertin, E.

AU - Brooks, D.

AU - Burke, D. L.

AU - Carnero Rosell, A.

AU - Carrasco Kind, M.

AU - Carretero, J.

AU - Cunha, C. E.

AU - D'Andrea, C. B.

AU - da Costa, L. N.

AU - Davis, C.

AU - De Vicente, J.

AU - Desai, S.

AU - Doel, P.

AU - Estrada, J.

AU - Frieman, J.

AU - García-Bellido, J.

AU - Gruen, D.

AU - Gruendl, R. A.

AU - Gutierrez, G.

AU - Hollowood, D.

AU - Honscheid, K.

AU - James, D. J.

AU - Jeltema, T.

AU - Krause, E.

AU - Kuehn, K.

AU - Kuropatkin, N.

AU - Lahav, O.

AU - Maia, M. A.G.

AU - Menanteau, F.

AU - Miquel, R.

AU - Plazas, A. A.

AU - Romer, A. K.

AU - Roodman, A.

AU - Sanchez, E.

AU - Santiago, B.

AU - Schindler, R.

AU - Smith, M.

AU - Smith, R. C.

AU - Soares-Santos, M.

AU - Sobreira, F.

AU - Suchyta, E.

AU - Swanson, M. E.C.

AU - Tarle, G.

AU - Thomas, D.

AU - Vikram, V.

AU - Walker, A. R.

PY - 2018/12/1

Y1 - 2018/12/1

N2 - © 2018 The Author(s). We present a structural and morphological catalogue for 45 million objects selected from the first year data of the Dark Energy Survey (DES). Single Sérsic fits and non-parametric measurements are produced for g, r, and i filters. The parameters from the best-fitting Sérsic model (total magnitude, half-light radius, Sérsic index, axis ratio, and position angle) are measured with GALFIT; the non-parametric coefficients (concentration, asymmetry, clumpiness, Gini, M20) are provided using the Zurich Estimator of Structural Types (ZEST+). To study the statistical uncertainties, we consider a sample of state-of-the-art image simulations with a realistic distribution in the input parameter space and then process and analyse them as we do with real data: this enables us to quantify the observational biases due to PSF blurring and magnitude effects and correct themeasurements as a function ofmagnitude, galaxy size, Sérsic index (concentration for the analysis of the non-parametric measurements) and ellipticity. We present the largest structural catalogue to date: we find that accurate and complete measurements for all the structural parameters are typically obtained for galaxies with SEXTRACTOR MAG AUTO I ≤ 21. Indeed, the parameters in the filters i and r can be overall well recovered up to MAG AUTO ≤ 21.5, corresponding to a fitting completeness of ~90 per cent below this threshold, for a total of 25million galaxies. The combination of parametric and non-parametric structural measurements makes this catalogue an important instrument to explore and understand how galaxies form and evolve. The catalogue described in this paper will be publicly released alongside the DES collaboration Y1 cosmology data products at the following URL: https://des.ncsa.illinois.edu/releases.

AB - © 2018 The Author(s). We present a structural and morphological catalogue for 45 million objects selected from the first year data of the Dark Energy Survey (DES). Single Sérsic fits and non-parametric measurements are produced for g, r, and i filters. The parameters from the best-fitting Sérsic model (total magnitude, half-light radius, Sérsic index, axis ratio, and position angle) are measured with GALFIT; the non-parametric coefficients (concentration, asymmetry, clumpiness, Gini, M20) are provided using the Zurich Estimator of Structural Types (ZEST+). To study the statistical uncertainties, we consider a sample of state-of-the-art image simulations with a realistic distribution in the input parameter space and then process and analyse them as we do with real data: this enables us to quantify the observational biases due to PSF blurring and magnitude effects and correct themeasurements as a function ofmagnitude, galaxy size, Sérsic index (concentration for the analysis of the non-parametric measurements) and ellipticity. We present the largest structural catalogue to date: we find that accurate and complete measurements for all the structural parameters are typically obtained for galaxies with SEXTRACTOR MAG AUTO I ≤ 21. Indeed, the parameters in the filters i and r can be overall well recovered up to MAG AUTO ≤ 21.5, corresponding to a fitting completeness of ~90 per cent below this threshold, for a total of 25million galaxies. The combination of parametric and non-parametric structural measurements makes this catalogue an important instrument to explore and understand how galaxies form and evolve. The catalogue described in this paper will be publicly released alongside the DES collaboration Y1 cosmology data products at the following URL: https://des.ncsa.illinois.edu/releases.

KW - Catalogues

KW - Galaxies: general

KW - Galaxy evolution

KW - Galaxy structure

KW - Surveys

U2 - 10.1093/MNRAS/STY1970

DO - 10.1093/MNRAS/STY1970

M3 - Article

SN - 0035-8711

VL - 481

SP - 2018

EP - 2040

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

ER -

A catalogue of structural and morphological measurements for DES Y1

Abstract

Keywords

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