The Stellar Abundances and Galactic Evolution Survey (SAGES). I. General Description and the First Data Release (DR1)

被引:17
|
作者
Fan, Zhou [1 ]
Zhao, Gang [1 ,2 ]
Wang, Wei [1 ]
Zheng, Jie [1 ]
Zhao, Jingkun [1 ]
Li, Chun [1 ]
Chen, Yuqin [1 ]
Yuan, Haibo [3 ]
Li, Haining [1 ]
Tan, Kefeng [1 ]
Song, Yihan [1 ]
Zuo, Fang [1 ]
Huang, Yang [1 ,2 ]
Luo, Ali [1 ]
Esamdin, Ali [4 ]
Ma, Lu [4 ]
Li, Bin [5 ,6 ]
Song, Nan [7 ]
Grupp, Frank [8 ]
Zhao, Haibin [5 ,6 ]
Ehgamberdiev, Shuhrat A. [9 ,10 ]
Burkhonov, Otabek A. [9 ]
Feng, Guojie [4 ]
Bai, Chunhai [4 ]
Zhang, Xuan [4 ]
Niu, Hubiao [4 ]
Khodjaev, Alisher S. [9 ]
Khafizov, Bakhodir M. [9 ]
Asfandiyarov, Ildar M. [9 ]
Shaymanov, Asadulla M. [9 ]
Karimov, Rivkat G. [9 ]
Yuldashev, Qudratillo [9 ]
Lu, Hao [5 ]
Zhaori, Getu [5 ]
Hong, Renquan [5 ]
Hu, Longfei [5 ]
Liu, Yujuan [1 ]
Xu, Zhijian [5 ,11 ]
机构
[1] Chinese Acad Sci, CAS Key Lab Opt Astron, Natl Astron Observ, Beijing 100101, Peoples R China
[2] Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
[3] Beijing Normal Univ, Dept Astron, Beijing 100875, Peoples R China
[4] Xinjiang Astron Observ, Urumqi 830011, Xinjiang, Peoples R China
[5] Chinese Acad Sci, Key Lab Planetary Sci, Purple Mt Observ, Nanjing 210023, Peoples R China
[6] Univ Sci & Technol China, Sch Astron & Space Sci, Hefei 230026, Peoples R China
[7] China Sci & Technol Museum, Beijing 100101, Peoples R China
[8] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany
[9] Uzbek Acad Sci, Ulugh Beg Astron Inst, Astron Skaya Str 33, Tashkent, Uzbekistan
[10] Natl Univ Uzbekistan, Tashkent, Uzbekistan
[11] China Three Gorges Univ, Yichang 443002, Peoples R China
来源
基金
中国国家自然科学基金;
关键词
DIGITAL SKY SURVEY; DARK-MATTER HALOES; PHOTOMETRIC CALIBRATION; COLOR REGRESSION; METALLICITY DISTRIBUTION; EXTINCTION COEFFICIENTS; WHITE-DWARFS; DUSTY VEIL; NIGHT-SKY; STARS;
D O I
10.3847/1538-4365/ace04a
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The Stellar Abundances and Galactic Evolution Survey (SAGES) of the northern sky is a specifically designed multiband photometric survey aiming to provide reliable stellar parameters with accuracy comparable to those from low-resolution optical spectra. It was carried out with the 2.3 m Bok telescope of Steward Observatory and three other telescopes. The observations in the u ( s ) and v ( s ) passband produced over 36,092 frames of images in total, covering a sky area of & SIM;9960 deg(2). The median survey completenesses of all observing fields for the two bands are u (s) = 20.4 mag and v ( s ) = 20.3 mag, respectively, while the limiting magnitudes with signal-to-noise ratio of 100 are u ( s ) & SIM; 17 mag and v ( s ) & SIM; 18 mag, correspondingly. We combined our catalog with the data release 1 (DR1) of the first Panoramic Survey Telescope And Rapid Response System (Pan-STARRS, PS1) catalog, and obtained a total of 48,553,987 sources that have at least one photometric measurement in each of the SAGES u ( s ) and v ( s ) and PS1 grizy passbands. This is the DR1 of SAGES, released in this paper. We compared our gri point-source photometry with those of PS1 and found an rms scatter of & SIM;2% difference between PS1 and SAGES for the same band. We estimated an internal photometric precision of SAGES to be of the order of & SIM;1%. Astrometric precision is better than 0.& DPRIME;2 based on comparison with DR1 of the Gaia mission. In this paper, we also describe the final end-user database, and provide some science applications.
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页数:18
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