The Dark Energy Survey Six-Year Calibration Star Catalog
Abstract
This Technical Note presents a catalog of calibrated reference stars that was generated by the Forward Calibration Method (FGCM) pipeline (arXiv:1706.01542) as part of the FGCM photometric calibration of the full Dark Energy Survey (DES) 6-Year data set (Y6). This catalog provides DES grizY magnitudes for 17 million stars with i-band magnitudes mostly in the range 16 < i < 21 spread over the full DES footprint covering 5000 square degrees over the Southern Galactic Cap at galactic latitudes b < -20 degrees (plus a few outlying fields disconnected from the main survey footprint). These stars are calibrated to a uniformity of better than 1.8 milli-mag (0.18%) RMS over the survey area. The absolute calibration of the catalog is computed with reference to the STISNIC.007 spectrum of the Hubble Space Telescope CalSpec standard star C26202; including systematic errors, the absolute flux system is known at the approximately 1% level. As such, these stars provide a useful reference catalog for calibrating grizY-band or grizY-like band photometry in the Southern Hemisphere, particularly for observations within the DES footprint.
Keywords
Cite
@article{arxiv.2305.01695,
title = {The Dark Energy Survey Six-Year Calibration Star Catalog},
author = {E. S. Rykoff and D. L. Tucker and D. L. Burke and S. S. Allam and K. Bechtol and G. M. Bernstein and D. Brout and R. A. Gruendl and J. Lasker and J. A. Smith and W. C. Wester and B. Yanny and T. M. C. Abbott and M. Aguena and O. Alves and F. Andrade-Oliveira and J. Annis and D. Bacon and E. Bertin and D. Brooks and A. Carnero Rosell and J. Carretero and F. J. Castander and A. Choi and L. N. da Costa and M. E. S. Pereira and T. M. Davis and J. De Vicente and H. T. Diehl and P. Doel and A. Drlica-Wagner and S. Everett and I. Ferrero and J. Frieman and J. García-Bellido and G. Giannini and D. Gruen and G. Gutierrez and S. R. Hinton and D. L. Hollowood and D. J. James and K. Kuehn and O. Lahav and J. L. Marshall and J. Mena-Fernández and F. Menanteau and J. Myles and B. D. Nord and R. L. C. Ogando and A. Palmese and A. Pieres and A. A. Plazas Malagón and M. Raveri and M. Rodgríguez-Monroy and E. Sanchez and B. Santiago and M. Schubnell and I. Sevilla-Noarbe and M. Smith and M. Soares-Santos and E. Suchyta and M. E. C. Swanson and T. N. Varga and M. Vincenzi and A. R. Walker and N. Weaverdyck and P. Wiseman},
journal= {arXiv preprint arXiv:2305.01695},
year = {2023}
}
Comments
21 pages, 15 figures, Fermilab Technical Note. Official Data Access Site: https://des.ncsa.illinois.edu/releases/other ; Temporary Data Access Site: https://data.darkenergysurvey.org/public_calib/DES_6yr_CalibStarCat/index.html