| Full text | |
| Author(s): Show less - |
Xiao, Kai
;
Huang, Yang
;
Yuan, Haibo
;
Beers, Timothy C.
;
Huang, Bowen
;
Xu, Shuai
;
Yang, Lin
;
Almeida-Fernandes, Felipe
;
Perottoni, Helio D.
;
Limberg, Guilherme
;
Schoenell, William
;
Ribeiro, Tiago
;
Kanaan, Antonio
;
de Oliveira, Natanael Gomes
Total Authors: 14
|
| Document type: | Journal article |
| Source: | ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES; v. 271, n. 2, p. 15-pg., 2024-04-01. |
| Abstract | |
We present a comprehensive recalibration of narrowband/medium-band and broadband photometry from the Southern Photometric Local Universe Survey (S-PLUS) by leveraging two approaches: an improved Gaia XP synthetic photometry (XPSP) method with corrected Gaia XP spectra, and the stellar color regression (SCR) method with corrected Gaia Early Data Release 3 photometric data and spectroscopic data from LAMOST Data Release 7. Through the use of millions of stars as standards per band, we demonstrate the existence of position-dependent systematic errors, up to 23 mmag for the main survey region, in the S-PLUS iDR4 photometric data. A comparison between the XPSP and SCR methods reveals minor differences in zero-point offsets, typically within the range of 1-6 mmag, indicating the accuracy of the recalibration, and a twofold to threefold improvement in the zero-point precision. During this process, we also verify and correct for systematic errors related to CCD position. The corrected S-PLUS iDR4 photometric data will provide a solid data foundation for conducting scientific research that relies on high-precision calibration. Our results underscore the power of the XPSP method in combination with the SCR method, showcasing their effectiveness in enhancing calibration precision for wide-field surveys when combined with Gaia photometry and XP spectra, to be applied for other S-PLUS subsurveys. (AU) | |
| FAPESP's process: | 22/07301-5 - Chemical-abundance patterns of disrupted dwarf galaxies |
| Grantee: | Guilherme Limberg |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate (Direct) |
| FAPESP's process: | 21/10429-0 - The chemodynamical structure of the ancient galactic halo |
| Grantee: | Guilherme Limberg |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |
| FAPESP's process: | 18/20977-2 - Identification of giant stars for mapping our Galaxy in the S-PLUS survey |
| Grantee: | Felipe de Almeida Fernandes |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 19/26492-3 - Science with the Brazilian robotic telescope |
| Grantee: | Claudia Lucia Mendes de Oliveira |
| Support Opportunities: | Special Projects |