DOE OSTI · 1818496
The DECam Local Volume Exploration Survey: Overview and First Data Release
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 ~15,000 deg 2 of high Galactic latitude (|b| > 10°) southern sky to a 5σ 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. Furthermore, 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 5σ point-source depth of g = 24.3 mag, r = 23.9 mag, i = 23.3 mag, and z = 22.8 mag. DELVE DR1 is publicly available via the NOIRLab Astro Data Lab science platform.
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Drlica-Wagner, A. (ORCID:000000018251933X), Carlin, J. L. (ORCID:0000000239369628), Nidever, D. L. (ORCID:0000000217933689), Ferguson, P. S. (ORCID:0000000169571627), Kuropatkin, N. (ORCID:0000000325110946), Adamów, M., Cerny, W. (ORCID:0000000316977062), Choi, Y., Esteves, J. H., Martínez-Vázquez, C. E., Mau, S. (ORCID:0000000335194004), Miller, A. E., Mutlu-Pakdil, B. (ORCID:0000000196494815), Neilsen, E. H. (ORCID:0000000273570317), Olsen, K. G. (ORCID:0000000271348296), Pace, A. B. (ORCID:0000000260218760), Riley, A. H., Sakowska, J. D., Sand, D. J. (ORCID:000000034102380X), Santana-Silva, L., Tollerud, E. J. (ORCID:000000029599310X), Tucker, D. L. (ORCID:0000000172115729), Vivas, A. K., Zaborowski, E., Zenteno, A., Abbott, T. C., Allam, S., Bechtol, K., Bell, C. M., Bell, E. F. (ORCID:0000000255649873), Bilaji, P., Bom, C. R., Carballo-Bello, J. A., Crnojević, D. (ORCID:0000000217634128), Cioni, M.-R. L. (ORCID:000000026797696X), Diaz-Ocampo, A., de Boer, T. L., Erkal, D., Gruendl, R. A., Hernandez-Lang, D., Hughes, A. K., James, D. J., Johnson, L. C., Li, T. S. (ORCID:0000000291106163), Mao, Y. -Y. (ORCID:0000000212000820), Martínez-Delgado, D. (ORCID:0000000338352231), Massana, P., McNanna, M., Morgan, R., Nadler, E. O. (ORCID:0000000211823825), Noël, N. D., Palmese, A. (ORCID:0000000260110530), Peter, A. G., Rykoff, E. S., Sánchez, J., Shipp, N. (ORCID:000000032497091X), Simon, J. D. (ORCID:0000000247334994), Smercina, A. (ORCID:0000000325997524), Soares-Santos, M., Stringfellow, G. S., Tavangar, K. (ORCID:0000000165846144), van der Marel, R. P., Walker, A. R. (ORCID:0000000271238943), Wechsler, R. H. (ORCID:000000032229011X), Wu, J. F., Yanny, B. (ORCID:0000000295412678), Fitzpatrick, M., Huang, L., Jacques, A., Nikutta, R. (ORCID:0000000270526900), Scott, A.. 2021-08-16. The DECam Local Volume Exploration Survey: Overview and First Data Release. https://doi.org/10.3847/1538-4365%2Fac079d
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