The VIPERS Multi-Lambda Survey. I. UV and near-IR observations, multi-colour catalogues, and photometric redshifts

T. Moutard; S. Arnouts; O. Ilbert; J. Coupon; P. Hudelot; D. Vibert; V. Comte; S. Conseil; I. Davidzon; L. Guzzo; A. Llebaria; C. Martin; H. J. McCracken; B. Milliard; G. Morrison; D. Schiminovich; M. Treyer; L. Van Werbaeke

doi:10.1051/0004-6361/201527945

The VIPERS Multi-Lambda Survey. I. UV and near-IR observations, multi-colour catalogues, and photometric redshifts

T. Moutard, S. Arnouts, O. Ilbert, J. Coupon, P. Hudelot, D. Vibert, V. Comte, S. Conseil, I. Davidzon, L. Guzzo, A. Llebaria, C. Martin, H. J. McCracken, B. Milliard, G. Morrison, D. Schiminovich, M. Treyer, L. Van Werbaeke

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

76 Citationer (Scopus)

Abstract

We present observations collected in the CFHTLS-VIPERS region in the ultraviolet with the GALEX satellite (far- and near-ultraviolet channels) and in the near-infrared with the CFHT/WIRCam camera (Ks band) over an area of 22 and 27 deg2, respectively. The depth of the photometry was optimised to measure the physical properties (e.g., star formation rate, stellar masses) of all the galaxies in the VIPERS spectroscopic survey. The large volume explored by VIPERS will enable a unique investigation of the relationship between the galaxy properties and their environment (density field and cosmic web) at high redshift (0.5 ≤ z ≤ 1.2). In this paper, we present the observations, the data reductions, and the build-up of the multi-colour catalogues. The CFHTLS-T0007 (gri-χ2) images are used as reference to detect and measure the Ks-band photometry, while the T0007 u∗-selected sources are used as priors to perform the GALEX photometry based on a dedicated software (EMphot). Our final sample reaches NUVAB ~ 25 (at 5σ) and KAB ~ 22 (at 3σ). The large spectroscopic sample (~51 000 spectroscopic redshifts) allows us to highlight the robustness of our star/galaxy separation and the reliability of our photometric redshifts with a typical accuracy of σz ≤ 0.04 and a fraction of catastrophic failures η ≤ 2% down to I ~ 23. We present various tests on the Ks-band completeness and photometric redshift accuracy by comparing our results with existing overlapping deep photometric catalogues. Finally, we discuss the BzK sample of passive and active galaxies at high redshift and the evolution of galaxy morphology in the (NUV-r) vs. (r-Ks) diagram at low redshift (z ≤ 0.25) based on the high image quality of the CFHTLS. The catalogue is available at the CDS via anonymous ftp to http://cdsarc.u-strasbg.fr (http://130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/590/A102The images, catalogues, and photometric redshifts for 1.5 million sources (down to NUV ≤ 25∪Ks ≤ 22) are released and available at: http://cesam.lam.fr/vipers-mls/

Originalsprog	Engelsk
Tidsskrift	Astronomy & Astrophysics
Vol/bind	590
ISSN	0004-6361
DOI	https://doi.org/10.1051/0004-6361/201527945
Status	Udgivet - 1 maj 2016
Udgivet eksternt	Ja

Adgang til dokumentet

10.1051/0004-6361/201527945

http://adsabs.harvard.edu/abs/2016A%26A...590A.102M

Citationsformater

Moutard, T., Arnouts, S., Ilbert, O., Coupon, J., Hudelot, P., Vibert, D., Comte, V., Conseil, S., Davidzon, I., Guzzo, L., Llebaria, A., Martin, C., McCracken, H. J., Milliard, B., Morrison, G., Schiminovich, D., Treyer, M., & Van Werbaeke, L. (2016). The VIPERS Multi-Lambda Survey. I. UV and near-IR observations, multi-colour catalogues, and photometric redshifts. Astronomy & Astrophysics, 590. https://doi.org/10.1051/0004-6361/201527945

Moutard, T, Arnouts, S, Ilbert, O, Coupon, J, Hudelot, P, Vibert, D, Comte, V, Conseil, S, Davidzon, I, Guzzo, L, Llebaria, A, Martin, C, McCracken, HJ, Milliard, B, Morrison, G, Schiminovich, D, Treyer, M & Van Werbaeke, L 2016, 'The VIPERS Multi-Lambda Survey. I. UV and near-IR observations, multi-colour catalogues, and photometric redshifts', Astronomy & Astrophysics, bind 590. https://doi.org/10.1051/0004-6361/201527945

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title = "The VIPERS Multi-Lambda Survey. I. UV and near-IR observations, multi-colour catalogues, and photometric redshifts",

abstract = "We present observations collected in the CFHTLS-VIPERS region in the ultraviolet with the GALEX satellite (far- and near-ultraviolet channels) and in the near-infrared with the CFHT/WIRCam camera (Ks band) over an area of 22 and 27 deg2, respectively. The depth of the photometry was optimised to measure the physical properties (e.g., star formation rate, stellar masses) of all the galaxies in the VIPERS spectroscopic survey. The large volume explored by VIPERS will enable a unique investigation of the relationship between the galaxy properties and their environment (density field and cosmic web) at high redshift (0.5 ≤ z ≤ 1.2). In this paper, we present the observations, the data reductions, and the build-up of the multi-colour catalogues. The CFHTLS-T0007 (gri-χ2) images are used as reference to detect and measure the Ks-band photometry, while the T0007 u∗-selected sources are used as priors to perform the GALEX photometry based on a dedicated software (EMphot). Our final sample reaches NUVAB ~ 25 (at 5σ) and KAB ~ 22 (at 3σ). The large spectroscopic sample (~51 000 spectroscopic redshifts) allows us to highlight the robustness of our star/galaxy separation and the reliability of our photometric redshifts with a typical accuracy of σz ≤ 0.04 and a fraction of catastrophic failures η ≤ 2% down to I ~ 23. We present various tests on the Ks-band completeness and photometric redshift accuracy by comparing our results with existing overlapping deep photometric catalogues. Finally, we discuss the BzK sample of passive and active galaxies at high redshift and the evolution of galaxy morphology in the (NUV-r) vs. (r-Ks) diagram at low redshift (z ≤ 0.25) based on the high image quality of the CFHTLS. The catalogue is available at the CDS via anonymous ftp to http://cdsarc.u-strasbg.fr (http://130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/590/A102The images, catalogues, and photometric redshifts for 1.5 million sources (down to NUV ≤ 25∪Ks ≤ 22) are released and available at: http://cesam.lam.fr/vipers-mls/",

keywords = "galaxies: photometry, galaxies: distances and redshifts, galaxies: evolution",

author = "T. Moutard and S. Arnouts and O. Ilbert and J. Coupon and P. Hudelot and D. Vibert and V. Comte and S. Conseil and I. Davidzon and L. Guzzo and A. Llebaria and C. Martin and McCracken, {H. J.} and B. Milliard and G. Morrison and D. Schiminovich and M. Treyer and {Van Werbaeke}, L.",

year = "2016",

month = may,

day = "1",

doi = "10.1051/0004-6361/201527945",

language = "English",

volume = "590",

journal = "Astronomy & Astrophysics",

issn = "0004-6361",

publisher = "E D P Sciences",

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TY - JOUR

T1 - The VIPERS Multi-Lambda Survey. I. UV and near-IR observations, multi-colour catalogues, and photometric redshifts

AU - Moutard, T.

AU - Arnouts, S.

AU - Ilbert, O.

AU - Coupon, J.

AU - Hudelot, P.

AU - Vibert, D.

AU - Comte, V.

AU - Conseil, S.

AU - Davidzon, I.

AU - Guzzo, L.

AU - Llebaria, A.

AU - Martin, C.

AU - McCracken, H. J.

AU - Milliard, B.

AU - Morrison, G.

AU - Schiminovich, D.

AU - Treyer, M.

AU - Van Werbaeke, L.

PY - 2016/5/1

Y1 - 2016/5/1

N2 - We present observations collected in the CFHTLS-VIPERS region in the ultraviolet with the GALEX satellite (far- and near-ultraviolet channels) and in the near-infrared with the CFHT/WIRCam camera (Ks band) over an area of 22 and 27 deg2, respectively. The depth of the photometry was optimised to measure the physical properties (e.g., star formation rate, stellar masses) of all the galaxies in the VIPERS spectroscopic survey. The large volume explored by VIPERS will enable a unique investigation of the relationship between the galaxy properties and their environment (density field and cosmic web) at high redshift (0.5 ≤ z ≤ 1.2). In this paper, we present the observations, the data reductions, and the build-up of the multi-colour catalogues. The CFHTLS-T0007 (gri-χ2) images are used as reference to detect and measure the Ks-band photometry, while the T0007 u∗-selected sources are used as priors to perform the GALEX photometry based on a dedicated software (EMphot). Our final sample reaches NUVAB ~ 25 (at 5σ) and KAB ~ 22 (at 3σ). The large spectroscopic sample (~51 000 spectroscopic redshifts) allows us to highlight the robustness of our star/galaxy separation and the reliability of our photometric redshifts with a typical accuracy of σz ≤ 0.04 and a fraction of catastrophic failures η ≤ 2% down to I ~ 23. We present various tests on the Ks-band completeness and photometric redshift accuracy by comparing our results with existing overlapping deep photometric catalogues. Finally, we discuss the BzK sample of passive and active galaxies at high redshift and the evolution of galaxy morphology in the (NUV-r) vs. (r-Ks) diagram at low redshift (z ≤ 0.25) based on the high image quality of the CFHTLS. The catalogue is available at the CDS via anonymous ftp to http://cdsarc.u-strasbg.fr (http://130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/590/A102The images, catalogues, and photometric redshifts for 1.5 million sources (down to NUV ≤ 25∪Ks ≤ 22) are released and available at: http://cesam.lam.fr/vipers-mls/

AB - We present observations collected in the CFHTLS-VIPERS region in the ultraviolet with the GALEX satellite (far- and near-ultraviolet channels) and in the near-infrared with the CFHT/WIRCam camera (Ks band) over an area of 22 and 27 deg2, respectively. The depth of the photometry was optimised to measure the physical properties (e.g., star formation rate, stellar masses) of all the galaxies in the VIPERS spectroscopic survey. The large volume explored by VIPERS will enable a unique investigation of the relationship between the galaxy properties and their environment (density field and cosmic web) at high redshift (0.5 ≤ z ≤ 1.2). In this paper, we present the observations, the data reductions, and the build-up of the multi-colour catalogues. The CFHTLS-T0007 (gri-χ2) images are used as reference to detect and measure the Ks-band photometry, while the T0007 u∗-selected sources are used as priors to perform the GALEX photometry based on a dedicated software (EMphot). Our final sample reaches NUVAB ~ 25 (at 5σ) and KAB ~ 22 (at 3σ). The large spectroscopic sample (~51 000 spectroscopic redshifts) allows us to highlight the robustness of our star/galaxy separation and the reliability of our photometric redshifts with a typical accuracy of σz ≤ 0.04 and a fraction of catastrophic failures η ≤ 2% down to I ~ 23. We present various tests on the Ks-band completeness and photometric redshift accuracy by comparing our results with existing overlapping deep photometric catalogues. Finally, we discuss the BzK sample of passive and active galaxies at high redshift and the evolution of galaxy morphology in the (NUV-r) vs. (r-Ks) diagram at low redshift (z ≤ 0.25) based on the high image quality of the CFHTLS. The catalogue is available at the CDS via anonymous ftp to http://cdsarc.u-strasbg.fr (http://130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/590/A102The images, catalogues, and photometric redshifts for 1.5 million sources (down to NUV ≤ 25∪Ks ≤ 22) are released and available at: http://cesam.lam.fr/vipers-mls/

KW - galaxies: photometry

KW - galaxies: distances and redshifts

KW - galaxies: evolution

U2 - 10.1051/0004-6361/201527945

DO - 10.1051/0004-6361/201527945

M3 - Journal article

SN - 0004-6361

VL - 590

JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

ER -