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

The DECam Local Volume Exploration Survey: Overview and First Data Release
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DOI：
10.3847/1538-4365/ac079d
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发表时间：
2021-03
期刊：
The Astrophysical Journal Supplement Series
影响因子：
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通讯作者：
A. Drlica-Wagner;J. Carlin;D. Nidever;P. Ferguson;N. Kuropatkin;M. Adam'ow;W. Cerny;Y. Choi;J. Esteves;C. Mart'inez-V'azquez;S. Mau;A. Miller;B. Mutlu-Pakdil;E. Neilsen;K. Olsen;A. Pace;A. Riley;J. Sakowska;D. Sand;L. Santana-Silva;E. Tollerud;D. Tucker;A. K. Vivas;E. Zaborowski;A. Zenteno;T. Abbott;S. Allam;K. Bechtol;C. Bell;E. Bell;P. Bilaji;C. Bom;J. Carballo-Bello;D. Crnojević;M. Cioni;A. Diaz-Ocampo;T. D. de Boer;D. Erkal;R. Gruendl;D. Hernandez-Lang;A. Hughes;D. James;L. Johnson;T. Li;Y. Mao;D. Mart'inez-Delgado;P. Massana;M. McNanna;R. Morgan;E. Nadler;N. Noël;A. Palmese;A. Peter;E. Rykoff;J. S'anchez;N. Shipp;J. Simon;A. Smercina;M. Soares-Santos;G. Stringfellow;K. Tavangar;R. P. van der Marel;A. Walker;Risa Wechsler;J. F. Wu;B. Yanny;M. Fitzpatrick;L. Huang;A. Jacques;R. Nikutta;A. Scott
A. Drlica-Wagner;J. Carlin;D. Nidever;P. Ferguson;N. Kuropatkin;M. Adam'ow;W. Cerny;Y. Choi;J. Esteves;C. Mart'inez-V'azquez;S. Mau;A. Miller;B. Mutlu-Pakdil;E. Neilsen;K. Olsen;A. Pace;A. Riley;J. Sakowska;D. Sand;L. Santana-Silva;E. Tollerud;D. Tucker;A. K. Vivas;E. Zaborowski;A. Zenteno;T. Abbott;S. Allam;K. Bechtol;C. Bell;E. Bell;P. Bilaji;C. Bom;J. Carballo-Bello;D. Crnojević;M. Cioni;A. Diaz-Ocampo;T. D. de Boer;D. Erkal;R. Gruendl;D. Hernandez-Lang;A. Hughes;D. James;L. Johnson;T. Li;Y. Mao;D. Mart'inez-Delgado;P. Massana;M. McNanna;R. Morgan;E. Nadler;N. Noël;A. Palmese;A. Peter;E. Rykoff;J. S'anchez;N. Shipp;J. Simon;A. Smercina;M. Soares-Santos;G. Stringfellow;K. Tavangar;R. P. van der Marel;A. Walker;Risa Wechsler;J. F. Wu;B. Yanny;M. Fitzpatrick;L. Huang;A. Jacques;R. Nikutta;A. Scott
中科院分区：
其他
文献类型：
--
作者：
A. Drlica-Wagner;J. Carlin;D. Nidever;P. Ferguson;N. Kuropatkin;M. Adam'ow;W. Cerny;Y. Choi;J. Esteves;C. Mart'inez-V'azquez;S. Mau;A. Miller;B. Mutlu-Pakdil;E. Neilsen;K. Olsen;A. Pace;A. Riley;J. Sakowska;D. Sand;L. Santana-Silva;E. Tollerud;D. Tucker;A. K. Vivas;E. Zaborowski;A. Zenteno;T. Abbott;S. Allam;K. Bechtol;C. Bell;E. Bell;P. Bilaji;C. Bom;J. Carballo-Bello;D. Crnojević;M. Cioni;A. Diaz-Ocampo;T. D. de Boer;D. Erkal;R. Gruendl;D. Hernandez-Lang;A. Hughes;D. James;L. Johnson;T. Li;Y. Mao;D. Mart'inez-Delgado;P. Massana;M. McNanna;R. Morgan;E. Nadler;N. Noël;A. Palmese;A. Peter;E. Rykoff;J. S'anchez;N. Shipp;J. Simon;A. Smercina;M. Soares-Santos;G. Stringfellow;K. Tavangar;R. P. van der Marel;A. Walker;Risa Wechsler;J. F. Wu;B. Yanny;M. Fitzpatrick;L. Huang;A. Jacques;R. Nikutta;A. Scott

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DECam局部体积探测巡天（DELVE）是智利托洛洛山美洲天文台4米布兰科望远镜上的一项为期126天的巡天计划。DELVE试图了解微弱的卫星星系和其他解决恒星子结构在一系列环境中的本地卷的特点。DELVE将把联合收割机新的DECam观测数据与DECam档案数据结合起来，覆盖银河系高纬度15，000平方度（θ B θ> 10°）南部天空，5σ深度为g，r，i，z θ 23.5 mag.此外，DELVE将覆盖麦哲伦云周围2200 deg2的区域，深度为g，r，i = 24.5等，在深度为g，i = 25.5等的四个麦哲伦类似物周围的面积为135度2。在这里，我们介绍了DELVE计划的概述和迄今为止的进展。我们还总结了第一个DELVE公开数据发布（DELVE DR 1），其为覆盖南方天空的5000 ° 2的520百万天文源提供点源和自动孔径测光，5σ点源深度为g = 24.3 mag，r = 23.9 mag，i = 23.3 mag，DELVE DR1可通过NOIRLab天文数据实验室科学平台公开获得。
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 deg2 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 deg2 around the Magellanic Clouds to a depth of g, r, i ∼ 24.5 mag and an area of ∼135 deg2 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 deg2 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.