학술논문
The DECam Local Volume Exploration Survey: Overview and First Data Release
Document Type
Working Paper
Author
Drlica-Wagner, A.; Carlin, J. L.; Nidever, D. L.; Ferguson, P. S.; Kuropatkin, N.; Adamów, M.; Cerny, W.; Choi, Y.; Esteves, J. H.; Martínez-Vázquez, C. E.; Mau, S.; Miller, A. E.; Mutlu-Pakdil, B.; Neilsen, E. H.; Olsen, K. A. G.; Pace, A. B.; Riley, A. H.; Sakowska, J. D.; Sand, D. J.; Santana-Silva, L.; Tollerud, E. J.; Tucker, D. L.; Vivas, A. K.; Zaborowski, E.; Zenteno, A.; Abbott, T. M. C.; Allam, S.; Bechtol, K.; Bell, C. P. M.; Bell, E. F.; Bilaji, P.; Bom, C. R.; Carballo-Bello, J. A.; Cioni, M. -R. L.; Diaz-Ocampo, A.; de Boer, T. J. L.; Erkal, D.; Gruendl, R. A.; Hernandez-Lang, D.; Hughes, A. K.; James, D. J.; Johnson, L. C.; Li, T. S.; Mao, Y. -Y.; Martínez-Delgado, D.; Massana, P.; McNanna, M.; Morgan, R.; Nadler, E. O.; Noël, N. E. D.; Palmese, A.; Peter, A. H. G.; Rykoff, E. S.; Sánchez, J.; Shipp, N.; Simon, J. D.; Smercina, A.; Soares-Santos, M.; Stringfellow, G. S.; Tavangar, K.; van der Marel, R. P.; Walker, A. R.; Wechsler, R. H.; Wu, J. F.; Yanny, B.; Fitzpatrick, M.; Huang, L.; Jacques, A.; Nikutta, R.; Scott, A.
Source
ApJS 256, 2 (2021)
Subject
Language
Abstract
The DECam Local Volume Exploration survey (DELVE) is a 126-night survey program on the 4-m Blanco Telescope at the Cerro Tololo Inter-American Observatory in Chile. DELVE seeks to understand the characteristics of faint satellite galaxies and other resolved stellar substructures over a range of environments in the Local Volume. DELVE will combine new DECam observations with archival DECam data to cover ~15000 deg$^2$ of high-Galactic-latitude (|b| > 10 deg) southern sky to a 5$\sigma$ depth of g,r,i,z ~ 23.5 mag. In addition, DELVE will cover a region of ~2200 deg$^2$ around the Magellanic Clouds to a depth of g,r,i ~ 24.5 mag and an area of ~135 deg$^2$ around four Magellanic analogs to a depth of g,i ~ 25.5 mag. Here, we present an overview of the DELVE program and progress to date. We also summarize the first DELVE public data release (DELVE DR1), which provides point-source and automatic aperture photometry for ~520 million astronomical sources covering ~5000 deg$^2$ of the southern sky to a 5$\sigma$ point-source depth of g=24.3, r=23.9, i=23.3, and z=22.8 mag. DELVE DR1 is publicly available via the NOIRLab Astro Data Lab science platform.
Comment: 30 pages, 14 figures, 6 tables; updated to match published version; public data release at https://datalab.noirlab.edu/delve
Comment: 30 pages, 14 figures, 6 tables; updated to match published version; public data release at https://datalab.noirlab.edu/delve