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Euclid Preparation : XIV. The Complete Calibration of the Color–Redshift Relation (C3R2) Survey: Data Release 3 (2021)

Stanford, S. A., Masters, D., Darvish, B., Stern, D., Cohen, J. G., Capak, P., Hernitschek, N., Davidzon, I., Rhodes, J., Sanders, D. B., Mobasher, B., Castander, F. J., Paltani, S., Aghanim, N., Amara, A., Auricchio, N., Balestra, A., Bender, R., Bodendorf, C., . . . Zucca, E. (2021). Euclid Preparation : XIV. The Complete Calibration of the Color–Redshift Relation (C3R2) Survey: Data Release 3. Astrophysical Journal Supplement Series, 256(1), Article 9. https://doi.org/10.3847/1538-4365/ac0833

JYU-tekijät tai -toimittajat

Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajat: Stanford, S. A.; Masters, D.; Darvish, B.; Stern, D.; Cohen, J. G.; Capak, P.; Hernitschek, N.; Davidzon, I.; Rhodes, J.; Sanders, D. B.; et al.

Lehti tai sarja: Astrophysical Journal Supplement Series

ISSN: 0067-0049

eISSN: 1538-4365

Julkaisuvuosi: 2021

Volyymi: 256

Lehden numero: 1

Artikkelinumero: 9

Kustantaja: IOP Publishing; American Astronomical Society

Julkaisumaa: Britannia

Julkaisun kieli: englanti

DOI: https://doi.org/10.3847/1538-4365/ac0833

Julkaisun avoin saatavuus: Ei avoin

Julkaisukanavan avoin saatavuus:

Rinnakkaistallenteen verkko-osoite (pre-print): https://arxiv.org/abs/2106.11367


The Complete Calibration of the Color–Redshift Relation (C3R2) survey is obtaining spectroscopic redshifts in order to map the relation between galaxy color and redshift to a depth of i ∼ 24.5 (AB). The primary goal is to enable sufficiently accurate photometric redshifts for Stage iv dark energy projects, particularly Euclid and the Nancy Grace Roman Space Telescope (Roman), which are designed to constrain cosmological parameters through weak lensing. We present 676 new high-confidence spectroscopic redshifts obtained by the C3R2 survey in the 2017B–2019B semesters using the DEIMOS, LRIS, and MOSFIRE multiobject spectrographs on the Keck telescopes. Combined with the 4454 redshifts previously published by this project, the C3R2 survey has now obtained and published 5130 high-quality galaxy spectra and redshifts. If we restrict consideration to only the 0.2 < zp < 2.6 range of interest for the Euclid cosmological goals, then with the current data release, C3R2 has increased the spectroscopic redshift coverage of the Euclid color space from 51% (as reported by Masters et al.) to the current 91%. Once completed and combined with extensive data collected by other spectroscopic surveys, C3R2 should provide the spectroscopic calibration set needed to enable photometric redshifts to meet the cosmology requirements for Euclid, and make significant headway toward solving the problem for Roman.

YSO-asiasanat: kosmologia; galaksit; spektroskopia

Liittyvät organisaatiot


OKM-raportointi: Kyllä

Alustava JUFO-taso: 2

Viimeisin päivitys 2021-14-10 klo 14:37