High-quality Extragalactic Legacy-field Monitoring (HELM) with DECam: Project Overview and First Data Release

被引：0

作者：

Zhuang, Ming-Yang ^{[1
]}

Yang, Qian ^{[1
,2
]}

Shen, Yue ^{[1
,3
]}

Adamow, Monika ^{[4
]}

Friedel, Douglas N. ^{[3
]}

Gruendl, R. A. ^{[3
]}

Stone, Zachary ^{[1
,4
]}

Li, Junyao ^{[1
]}

Liu, Xin ^{[1
,3
,5
]}

Martini, Paul ^{[6
,7
]}

Abbott, Timothy M. C. ^{[8
]}

Anderson, Scott F. ^{[9
]}

Assef, Roberto J. ^{[10
]}

Bauer, Franz E. ^{[11
,12
,13
]}

Bielby, Richard ^{[14
]}

Brandt, W. N. ^{[15
,16
,17
]}

Burke, Colin J. ^{[1
]}

Casares, Jorge ^{[18
,19
]}

Chen, Yu-Ching ^{[1
]}

De Rosa, Gisella ^{[20
]}

Drlica-Wagner, Alex ^{[21
,22
,23
]}

Dwelly, Tom ^{[24
]}

Eltvedt, Alice ^{[14
]}

Alvarez, Gloria Fonseca ^{[25
]}

Fu, Jianyang ^{[1
]}

Fuentes, Cesar ^{[13
,26
,27
]}

Graham, Melissa L. ^{[28
]}

Grier, Catherine J. ^{[29
,30
]}

Golovich, Nathan ^{[31
]}

Hall, Patrick B. ^{[32
]}

Hartigan, Patrick ^{[33
]}

Horne, Keith ^{[34
]}

Koekemoer, Anton M. ^{[20
]}

Krumpe, Mirko ^{[35
]}

Li, Jennifer I. ^{[36
]}

Lidman, Chris ^{[37
,38
]}

Malik, Umang ^{[37
]}

Mangian, Amelia ^{[39
]}

Merloni, Andrea ^{[24
]}

Ricci, Claudio ^{[40
,41
]}

Salvato, Mara ^{[24
]}

Sharp, Rob ^{[37
]}

Trilling, David E. ^{[42
]}

Tucker, Brad E. ^{[37
,43
,44
]}

Wen, Di ^{[1
]}

Wideman, Zachary ^{[45
]}

Xue, Yongquan ^{[46
]}

Yu, Zhefu ^{[47
]}

Zucker, Catherine ^{[2
]}

机构：

[1] Univ Illinois, Dept Astron, Urbana, IL 61801 USA

[2] Harvard & Smithsonian, Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA

[3] Univ Illinois, Natl Ctr Supercomp Applicat, Urbana, IL USA

[4] Univ Illinois, Ctr Astrophys Surveys, Natl Ctr Supercomp Applicat, Urbana, IL USA

[5] Univ Illinois Champaign Urbana, Champaign, IL 61801 USA

[6] Ohio State Univ, Chillicothe, OH 43210 USA

[7] Ohio State Univ, Ctr Cosmol & Astroparticle Phys, Columbus, OH USA

[8] NSFs NOIRLab, CTIO, Casilla 603, La Serena, Chile

[9] Univ Washington, Astron Dept, Box 351580, Seattle, WA USA

[10] Univ Diego Portales, Fac Ingn & Ciencias, Inst Estudios Astrofis, Ave Ejercito Libertador 441, Santiago, Chile

[11] Pontificia Univ Catolica Chile, Fac Fis, Inst Astrofis, Campus San Joaquin,Ave Vicuna Mackenna 4860, Macul Santiago, Chile

[12] Pontificia Univ Catolica Chile, Campus San Joaquin,Ave Vicuna Mackenna 4860, Macul Santiago 7820436, Chile

[13] Millennium Inst Astrophys, Nuncio Monsenor Sotero Sanz 100,104 Providencia, Santiago, Chile

[14] Univ Durham, Ctr Extragalact Astron, Dept Phys, South Rd, Durham DH1 3LE, England

[15] Penn State Univ, 525 Davey Lab, Bellefonte, PA 16802 USA

[16] Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA USA

[17] Penn State Univ, Dept Phys, 104 Davey Lab, University Pk, PA 16802 USA

[18] Inst Astrofis Canarias, San Cristobal la Laguna, Tenerife, Spain

[19] Univ La Laguna, Dept Astrofis, E-38206 San Cristobal la Laguna, Tenerife, Spain

[20] Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21218 USA

[21] Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA

[22] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA

[23] Univ Chicago, Pediat, Chicago, IL 60637 USA

[24] Max Planck Inst Extraterr Phys, Giessenbachstr 1, D-85748 Garching, Germany

[25] NSFs NOIRLab, 950 N Cherry Ave, Tucson, AZ 85719 USA

[26] Univ Chile, Dept Astron, Camino Observ 1515, Las Condes, Santiago, Chile

[27] Ctr Excelencia Astrofis & Tecnol Afines CATA, Santiago, Chile

[28] Univ Washington, DIRAC Inst, Dept Astron, 3910 15th Ave NE, Seattle, WA 98195 USA

[29] Univ Wisconsin, Dept Astron, Madison, WI USA

[30] Univ Arizona, Steward Observ, 933 N Cherry Ave, Tucson, AZ 85721 USA

[31] Lawrence Livermore Natl Lab, 7000 E Ave, Livermore, CA USA

[32] York Univ, Dept Phys & Astron, 4700 Keele St, Toronto, ON M3J 1P3, Canada

[33] Rice Univ, Dept Phys & Astron, 6100 S Main St, Houston, TX 77251 USA

[34] Univ St Andrews, SUPA Sch Phys & Astron, St Andrews KY16 9SS, Scotland

[35] Leibniz Inst Astrophys Potsdam AIP, Sternwarte 16, D-14482 Potsdam, Germany

[36] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA

[37] Australian Natl Univ, Res Sch Astron & Astrophys, Canberra, ACT 2611, Australia

[38] Australian Natl Univ, Coll Sci, Ctr Gravitat Astrophys, Canberra, ACT 2601, Australia

[39] Univ Illinois, Informat Trust Inst, Urbana, IL 61801 USA

[40] Univ Diego Portales, Fac Ingn, Nucleo Astron, Ave Ejercito Libertador 441, Santiago, Chile

[41] Peking Univ, Kavli Inst Astron & Astrophys, Beijing, Peoples R China

[42] No Arizona Univ, Dept Astron & Planetary Sci, Flagstaff, AZ 86011 USA

[43] Australian Natl Univ, Natl Ctr Publ Awareness Sci, Canberra, ACT 2601, Australia

[44] Australian Res Council, Ctr Excellence All Sky Astrophys 3 Dimens ASTRO 3D, Stromlo, Australia

[45] Texas A&M Univ, Dept Phys & Astron, 4242 TAMU, College Stn, TX 77843 USA

[46] Univ Sci & Technol China, Dept Astron, CAS Key Lab Res Galaxies & Cosmol, Hefei 230026, Peoples R China

[47] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, 452 Lomita Mall, Stanford, CA 94305 USA

来源：

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 2024年 / 274卷 / 02期

基金：

国家重点研发计划;

关键词：

DEEP-DRILLING FIELDS; DARK ENERGY; PERFORMANCE; ASTROPY; SCIENCE; SPACE;

D O I：

10.3847/1538-4365/ad7d01

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

High-quality Extragalactic Legacy-field Monitoring (HELM) is a long-term observing program that photometrically monitors several well-studied extragalactic legacy fields with the Dark Energy Camera (DECam) imager on the CTIO 4 m Blanco telescope. Since 2019 February, HELM has been monitoring regions within COSMOS, XMM-LSS, CDF-S, S-CVZ, ELAIS-S1, and SDSS Stripe 82 with few-day cadences in the (u)gri(z) bands, over a collective sky area of similar to 38 deg2. The main science goal of HELM is to provide high-quality optical light curves for a large sample of active galactic nuclei (AGNs), and to build decades-long time baselines when combining past and future optical light curves in these legacy fields. These optical images and light curves will facilitate the measurements of AGN reverberation mapping lags, as well as studies of AGN variability and its dependencies on accretion properties. In addition, the time-resolved and coadded DECam photometry will enable a broad range of science applications from galaxy evolution to time-domain science. We describe the design and implementation of the program and present the first data release that includes source catalogs and the first similar to 3.5 yr of light curves during 2019A-2022A.

引用

页数：10

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