English

The DECam Local Volume Exploration Survey Data Release 2

Instrumentation and Methods for Astrophysics 2022-08-17 v1 Cosmology and Nongalactic Astrophysics Astrophysics of Galaxies

Abstract

We present the second public data release (DR2) from the DECam Local Volume Exploration survey (DELVE). DELVE DR2 combines new DECam observations with archival DECam data from the Dark Energy Survey, the DECam Legacy Survey, and other DECam community programs. DELVE DR2 consists of ~160,000 exposures that cover >21,000 deg^2 of the high Galactic latitude (|b| > 10 deg) sky in four broadband optical/near-infrared filters (g, r, i, z). DELVE DR2 provides point-source and automatic aperture photometry for ~2.5 billion astronomical sources with a median 5{\sigma} point-source depth of g=24.3, r=23.9, i=23.5, and z=22.8 mag. A region of ~17,000 deg^2 has been imaged in all four filters, providing four-band photometric measurements for ~618 million astronomical sources. DELVE DR2 covers more than four times the area of the previous DELVE data release and contains roughly five times as many astronomical objects. DELVE DR2 is publicly available via the NOIRLab Astro Data Lab science platform.

Keywords

Cite

@article{arxiv.2203.16565,
  title  = {The DECam Local Volume Exploration Survey Data Release 2},
  author = {A. Drlica-Wagner and P. S. Ferguson and M. Adamów and M. Aguena and F. Andrade-Oliveira and D. Bacon and K. Bechtol and E. F. Bell and E. Bertin and P. Bilaji and S. Bocquet and C. R. Bom and D. Brooks and D. L. Burke and J. A. Carballo-Bello and J. L. Carlin and A. Carnero Rosell and M. Carrasco Kind and J. Carretero and F. J. Castander and W. Cerny and C. Chang and Y. Choi and C. Conselice and M. Costanzi and D. Crnojević and L. N. da Costa and J. De Vicente and S. Desai and J. Esteves and S. Everett and I. Ferrero and M. Fitzpatrick and B. Flaugher and D. Friedel and J. Frieman and J. García-Bellido and M. Gatti and E. Gaztanaga and D. W. Gerdes and D. Gruen and R. A. Gruendl and J. Gschwend and W. G. Hartley and D. Hernandez-Lang and S. R. Hinton and D. L. Hollowood and K. Honscheid and A. K. Hughes and A. Jacques and D. J. James and M. D. Johnson and K. Kuehn and N. Kuropatkin and O. Lahav and T. S. Li and C. Lidman and H. Lin and M. March and J. L. Marshall and D. Martínez-Delgado and C. E. Martínez-Vázquez and P. Massana and S. Mau and M. McNanna and P. Melchior and F. Menanteau and A. E. Miller and R. Miquel and J. J. Mohr and R. Morgan and B. Mutlu-Pakdil and R. R. Muñoz and E. H. Neilsen and D. L. Nidever and R. Nikutta and J. L. Nilo Castellon and N. E. D. Noël and R. L. C. Ogando and K. A. G. Olsen and A. B. Pace and A. Palmese and F. Paz-Chinchón and M. E. S. Pereira and A. Pieres and A. A. Plazas Malagón and J. Prat and A. H. Riley and M. Rodriguez-Monroy and A. K. Romer and A. Roodman and M. Sako and J. D. Sakowska and E. Sanchez and F. J. Sánchez and D. J. Sand and L. Santana-Silva and B. Santiago and M. Schubnell and S. Serrano and I. Sevilla-Noarbe and J. D. Simon and M. Smith and M. Soares-Santos and G. S. Stringfellow and E. Suchyta and D. J. Suson and C. Y. Tan and G. Tarle and K. Tavangar and D. Thomas and C. To and E. J. Tollerud and M. A. Troxel and D. L. Tucker and T. N. Varga and A. K. Vivas and A. R. Walker and J. Weller and R. D. Wilkinson and J. F. Wu and B. Yanny and E. Zaborowski and A. Zenteno},
  journal= {arXiv preprint arXiv:2203.16565},
  year   = {2022}
}

Comments

23 pages, 10 figures, 5 tables; to be submitted to AAS Journals; public data release at https://datalab.noirlab.edu/delve/. arXiv admin note: substantial text overlap with arXiv:2103.07476

R2 v1 2026-06-24T10:32:25.392Z