| Title | Design for the First Narrowband Filter for the Dark Energy Camera: Optimizing the LAGER Survey for z similar to 7 Galaxies |
| Authors | Zheng, Zhen-Ya Rhoads, James E. Wang, Jun-Xian Malhotra, Sangeeta Walker, Alistair Mooney, Thomas Jiang, Chunyan Hu, Weida Hibon, Pascale Jiang, Linhua Infante, Leopoldo Barrientos, L. Felipe Galaz, Gaspar Valdes, Francisco Wester, William Yang, Huan Coughlin, Alicia Harish, Santosh Kang, Wenyong Khostovan, Ali Ahmad Kong, Xu Perez, Lucia A. Pharo, John Wold, Isak Zheng, XianZhong |
| Affiliation | Shanghai Astron Observ, CAS Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China Goddard Space Flight Ctr, Astrophys Sci Div, 8800 Greenbelt Rd, Greenbelt, MD 20771 USA Univ Sci & Technol China, Dept Astron, CAS Key Lab Res Galaxies & Cosmol, Hefei 230026, Anhui, Peoples R China Natl Opt Astron Observ, Cerro Tololo Interamer Observ, Casilla 603, La Serena, Chile Materion Precis Opt, 2 Lyberty Way, Westford, MA 01886 USA Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ 85287 USA European Southern Observ, Alonso de Cordova 3107,Casilla 19001, Santiago, Chile Peking Univ, Kavli Inst Astron & Astrophys, Beijing 100871, Peoples R China Carnegie Observ, Las Campanas Observ, Vallenar, Region De Ataca, Chile Pontificia Univ Catolica Chile, Fac Fis, Inst Astrofis, Santiago, Chile Natl Opt Astron Observ, 950 N Cherry Ave, Tucson, AZ 85719 USA Fermilab Natl Accelerator Lab, Particle Phys Div, POB 500, Batavia, IL 60510 USA Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China |
| Keywords | methods: observational |
| Issue Date | 2019 |
| Publisher | PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC |
| Abstract | We present the design for the first narrowband filter, NB964, for the Dark Energy Camera (DECam), which is operated on the 4-m Blanco Telescope at the Cerro Tololo Inter-American Observatory. The NB964 filter profile is essentially defined by maximizing the power of searching for Lyman-alpha emitting galaxies (LAEs) in the epoch of reionization, with the consideration of the night sky background in the near-infrared and the DECam quantum efficiency. The NB964 filter was manufactured by Materion in 2015. It has a central wavelength of 964.2 nm and a full width at half maximum (FWHM) of 9.2 nm. An NB964 survey named Lyman Alpha Galaxies in the Epoch of Reionization (LAGER) has been ongoing since December 2015. Here, we report results of lab tests, on-site tests, and observations with the NB964 filter. The excellent performances of this filter ensure that the LAGER project is able to detect LAEs at z similar to 7 with a high efficiency. |
| URI | http://hdl.handle.net/20.500.11897/547251 |
| ISSN | 0004-6280 |
| DOI | 10.1088/1538-3873/ab1c32 |
| Indexed | SCI(E) EI |
| Appears in Collections: | 科维理天文与天体物理研究所 |
