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The DECam Local Volume Exploration Survey: Overview and First Data Release

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arxiv 2103.07476 v2 pith:ERISDPHN submitted 2021-03-12 astro-ph.GA astro-ph.COastro-ph.SR

The DECam Local Volume Exploration Survey: Overview and First Data Release

A. Drlica-Wagner , J. L. Carlin , D. L. Nidever , P. S. Ferguson , N. Kuropatkin , M. Adam\'ow , W. Cerny , Y. Choi
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J. H. Esteves C. E. Mart\'inez-V\'azquez S. Mau A. E. Miller B. Mutlu-Pakdil E. H. Neilsen K. A. G. Olsen A. B. Pace A. H. Riley J. D. Sakowska D. J. Sand L. Santana-Silva E. J. Tollerud D. L. Tucker A. K. Vivas E. Zaborowski A. Zenteno T. M. C. Abbott S. Allam K. Bechtol C. P. M. Bell E. F. Bell P. Bilaji C. R. Bom J. A. Carballo-Bello M.-R. L. Cioni A. Diaz-Ocampo T. J. L. de Boer D. Erkal R. A. Gruendl D. Hernandez-Lang A. K. Hughes D. J. James L. C. Johnson T. S. Li Y.-Y. Mao D. Mart\'inez-Delgado P. Massana M. McNanna R. Morgan E. O. Nadler N. E. D. No\"el A. Palmese A. H. G. Peter E. S. Rykoff J. S\'anchez N. Shipp J. D. Simon A. Smercina M. Soares-Santos G. S. Stringfellow K. Tavangar R. P. van der Marel A. R. Walker R. H. Wechsler J. F. Wu B. Yanny M. Fitzpatrick L. Huang A. Jacques R. Nikutta A. Scott (DELVE Collaboration)
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classification astro-ph.GA astro-ph.COastro-ph.SR
keywords delvedatadecamdepthlocalsurveyvolumearound
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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.

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