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| Autores principales: | , , , , , , , , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
| Acceso en línea: | https://arxiv.org/abs/2501.03513 |
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| author | Li, Xiaolu Xiao, Kai Huang, Yang Yuan, Haibo Tang, Yanke Beers, Timothy C. Huang, Bowen Ma, Mingyang Humire, Pedro K. Alvarez-Candal, Alvaro Sestito, Federico Gai, Ning Mao, Yongna Gu, Hongrui Tao, Zhenzhao Yang, Lin Xu, Shuai Hu, Rong |
| author_facet | Li, Xiaolu Xiao, Kai Huang, Yang Yuan, Haibo Tang, Yanke Beers, Timothy C. Huang, Bowen Ma, Mingyang Humire, Pedro K. Alvarez-Candal, Alvaro Sestito, Federico Gai, Ning Mao, Yongna Gu, Hongrui Tao, Zhenzhao Yang, Lin Xu, Shuai Hu, Rong |
| contents | We present an independent validation and comprehensive re-calibration of S-PLUS Ultra-Short Survey (USS) DR1 12-band photometry using about 30,000--70,000 standard stars from the BEst STar (BEST) database. We identify spatial variation of zero-point offsets, up to 30--40\,mmag for blue filters ($u$, $J0378$, $J0395$) and 10\,mmag for others, predominantly due to the higher uncertainties of the technique employed in the original USS calibration. Moreover, we detect large- and medium-scale CCD position-dependent systematic errors, up to 50\,mmag, primarily caused by different aperture and flat-field corrections. We then re-calibrate the USS DR1 photometry by correcting the systematic shifts for each tile using second-order two-dimensional polynomial fitting combined with a numerical stellar flat-field correction method. The re-calibrated results from the XPSP and the SCR standards are consistent within 6\,mmag in the USS zero-points, demonstrating both the typical precision of re-calibrated USS photometry and a sixfold improvement in USS zero-point precision. Further validation using SDSS and Pan-STARRS1, as well as LAMOST DR10 and Gaia photometry, also confirms this precision for the re-calibrated USS photometry. Our results clearly demonstrate the capability and the efficiency of the BEST database in improving calibration precision to the milli-magnitude level for wide-field photometric surveys. The re-calibrated USS DR1 photometry is publicly available: doi: 10.12149/101503 (https://nadc.china-vo.org/res/r101504/). |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_03513 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The S-PLUS Ultra-Short Survey: Photometric Re-calibration with the BEst STar Database Li, Xiaolu Xiao, Kai Huang, Yang Yuan, Haibo Tang, Yanke Beers, Timothy C. Huang, Bowen Ma, Mingyang Humire, Pedro K. Alvarez-Candal, Alvaro Sestito, Federico Gai, Ning Mao, Yongna Gu, Hongrui Tao, Zhenzhao Yang, Lin Xu, Shuai Hu, Rong Astrophysics of Galaxies Instrumentation and Methods for Astrophysics Solar and Stellar Astrophysics We present an independent validation and comprehensive re-calibration of S-PLUS Ultra-Short Survey (USS) DR1 12-band photometry using about 30,000--70,000 standard stars from the BEst STar (BEST) database. We identify spatial variation of zero-point offsets, up to 30--40\,mmag for blue filters ($u$, $J0378$, $J0395$) and 10\,mmag for others, predominantly due to the higher uncertainties of the technique employed in the original USS calibration. Moreover, we detect large- and medium-scale CCD position-dependent systematic errors, up to 50\,mmag, primarily caused by different aperture and flat-field corrections. We then re-calibrate the USS DR1 photometry by correcting the systematic shifts for each tile using second-order two-dimensional polynomial fitting combined with a numerical stellar flat-field correction method. The re-calibrated results from the XPSP and the SCR standards are consistent within 6\,mmag in the USS zero-points, demonstrating both the typical precision of re-calibrated USS photometry and a sixfold improvement in USS zero-point precision. Further validation using SDSS and Pan-STARRS1, as well as LAMOST DR10 and Gaia photometry, also confirms this precision for the re-calibrated USS photometry. Our results clearly demonstrate the capability and the efficiency of the BEST database in improving calibration precision to the milli-magnitude level for wide-field photometric surveys. The re-calibrated USS DR1 photometry is publicly available: doi: 10.12149/101503 (https://nadc.china-vo.org/res/r101504/). |
| title | The S-PLUS Ultra-Short Survey: Photometric Re-calibration with the BEst STar Database |
| topic | Astrophysics of Galaxies Instrumentation and Methods for Astrophysics Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2501.03513 |