Galaxy–Galaxy lensing in HSC: Validation tests and the impact of heterogeneous spectroscopic training sets
Galaxy–Galaxy lensing in HSC: Validation tests and the impact of heterogeneous spectroscopic training sets
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Galaxy - HSC 中的 Galaxy 透镜:验证测试和异构光谱训练集的影响
DOI:
10.1093/mnras/stz2968
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发表时间:
2019
影响因子:
4.8
通讯作者:
More, Surhud
中科院分区:
文献类型:
--
作者:
Speagle, Joshua S.;Leauthaud, Alexie;Huang, Song;Bradshaw, Christopher P.;Ardila, Felipe;Capak, Peter L.;Eisenstein, Daniel J.;Masters, Daniel C.;Mandelbaum, Rachel;More, Surhud
Although photometric redshifts (photo-z’s) are crucial ingredients for current and upcoming large-scale surveys, the high-quality spectroscopic redshifts currently available to train, validate, and test them are substantially non-representative in both magnitude and colour. We investigate the nature and structure of this bias by tracking how objects from a heterogeneous training sample contribute to photo-zpredictions as a function of magnitude and colour, and illustrate that the underlying redshift distribution at fixed colour can evolve strongly as a function of magnitude. We then test the robustness of the galaxy–galaxy lensing signal in 120 deg2of HSC–SSP DR1 data to spectroscopic completeness and photo-zbiases, and find that their impacts are sub-dominant to current statistical uncertainties. Our methodology provides a framework to investigate how spectroscopic incompleteness can impact photo-z-based weak lensing predictions in future surveys such as LSST andWFIRST.
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DOI:
--
发表时间:
2013-03
期刊:
arXiv: Cosmology and Nongalactic Astrophysics
影响因子:
--
作者:
B. M'enard;R. Scranton;S. Schmidt;C. Morrison;D. Jeong;T. Budavári;Mubdi Rahman
通讯作者:
B. M'enard;R. Scranton;S. Schmidt;C. Morrison;D. Jeong;T. Budavári;Mubdi Rahman
DOI:
10.3847/0067-0049/224/2/24
发表时间:
2016-04
期刊:
The Astrophysical Journal Supplement Series
影响因子:
--
作者:
C. Laigle;H. McCracken;O. Ilbert;B. Hsieh;I. Davidzon;P. Capak;G. Hasinger;J. Silverman;C. Pi
通讯作者:
C. Laigle;H. McCracken;O. Ilbert;B. Hsieh;I. Davidzon;P. Capak;G. Hasinger;J. Silverman;C. Pi
影响因子:
4.8
作者:
C. Hikage;R. Mandelbaum;A. Leauthaud;E. Rozo;E. Rykoff
通讯作者:
E. Rykoff
DOI:
--
发表时间:
--
期刊:
影响因子:
--
作者:
通讯作者:
--
影响因子:
2.3
作者:
Y. Komiyama;Y. Obuchi;H. Nakaya;Y. Kamata;S. Kawanomoto;Y. Utsumi;S. Miyazaki;F. Uraguchi;H. Furusawa;T. Morokuma;T. Uchida;H. Miyatake;S. Mineo;Hiroki Fujimori;H. Aihara;H. Karoji;J. Gunn;Shiang‐Yu Wang
通讯作者:
Y. Komiyama;Y. Obuchi;H. Nakaya;Y. Kamata;S. Kawanomoto;Y. Utsumi;S. Miyazaki;F. Uraguchi;H. Furusawa;T. Morokuma;T. Uchida;H. Miyatake;S. Mineo;Hiroki Fujimori;H. Aihara;H. Karoji;J. Gunn;Shiang‐Yu Wang