| Full text | |
| Author(s): Show less - |
Lopez-Sanjuan, C.
[1]
;
Yuan, H.
[2]
;
Vazquez Ramio, H.
[1]
;
Varela, J.
[1]
;
Cristobal-Hornillos, D.
[3]
;
Tremblay, P. -E.
[4]
;
Marin-Franch, A.
[1]
;
Cenarro, A. J.
[1]
;
Ederoclite, A.
[5]
;
Alfaro, E. J.
[6]
;
Alvarez-Candal, A.
[7, 6, 8]
;
Daflon, S.
[7]
;
Hernan-Caballero, A.
[3]
;
Hernandez-Monteagudo, C.
[1, 9, 10]
;
Jimenez-Esteban, F. M.
[11, 12]
;
Placco, V. M.
[13]
;
Tempel, E.
[14]
;
Alcaniz, J.
[7]
;
Angulo, R. E.
[15, 16]
;
Dupke, R. A.
[17, 7, 18]
;
Moles, M.
[3]
;
Sodre, Jr., L.
[5]
Total Authors: 22
|
| Affiliation: Show less - | [1] CSIC, Unidad Asociada, Ctr Estudios Fis Cosmos Aragon CEFCA, Plaza San Juan 1, Teruel 44001 - Spain
[2] Beijing Normal Univ, Dept Astron, Beijing 100875 - Peoples R China
[3] Ctr Estudios Fis Cosmos Aragon CEFCA, Plaza San Juan 1, Teruel 44001 - Spain
[4] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands - England
[5] Univ Sao Paulo, Inst Astron Geofis & Ciencias Atmosfer, BR-05508090 Sao Paulo - Brazil
[6] Inst Astrofis Andalucia IAA CSIC, Glorieta Astron S-N, Granada 18008 - Spain
[7] Observ Nacl, Rua Gen Jose Cristino 77, BR-20921400 Rio De Janeiro - Brazil
[8] Univ Alicante, IUFACyT, E-03080 Alicante - Spain
[9] Inst Astrofis Canarias IAC, San Cristobal la Laguna 38205 - Spain
[10] Univ La Laguna ULL, Dept Astrofis, San Cristobal la Laguna 38200 - Spain
[11] Ctr Astrobiol CSIC INTA, ESAC Campus, Camino Bajo Castillo S-N, Villanueva De La Canada 28692 - Spain
[12] Spanish Virtual Observ, Villanueva De La Canada 28692 - Spain
[13] NSFs NOIRLab, Community Sci & Data Ctr, 950 N Cherry Ave, Tucson, AZ 85719 - USA
[14] Univ Tartu, Tartu Observ, Observ 1, EE-61602 Toravere - Estonia
[15] Ikerbasque, Basque Fdn Sci, Bilbao 48013 - Spain
[16] Donostia Int Phys Ctr DIPC, Paseo Manuel Lardizabal 4, Donostia San Sebastian 20018 - Spain
[17] Univ Michigan, Dept Astron, 1085 South Univ Ave, Ann Arbor, MI 48109 - USA
[18] Univ Alabama, Dept Phys & Astron, Gallalee Hall, Tuscaloosa, AL 35401 - USA
Total Affiliations: 18
|
| Document type: | Journal article |
| Source: | Astronomy & Astrophysics; v. 654, OCT 11 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
Aims. We present the photometric calibration of the twelve optical passbands for the Javalambre Photometric Local Universe Survey (J-PLUS) second data release (DR2), comprising 1088 pointings of two square degrees, and study the systematic impact of metallicity on the stellar locus technique. Methods. The {[}Fe/H] metallicity from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) for 146 184 highquality calibration stars, defined with signal-to-noise ratio larger than ten in J-PLUS passbands and larger than three in Gaia parallax, was used to compute the metallicity-dependent stellar locus (ZSL). The initial homogenization of J-PLUS photometry, performed with a unique stellar locus, was refined by including the metallicity e ffect in colors via the ZSL. Results. The variation of the average metallicity along the Milky Way produces a systematic o ffset in J-PLUS calibration. This e ffect is well above 1% for the bluer passbands and amounts 0.07, 0.07, 0.05, 0.03, and 0.02 mag in u, J0378, J0395, J0410, and J0430, respectively. We modeled this e ffect with the Milky Way location of the J-PLUS pointing, also providing an updated calibration for those observations without LAMOST information. The estimated accuracy in the calibration after including the metallicity e ffect is at 1% for the bluer J-PLUS passbands and below for the rest. Conclusions. Photometric calibration with the stellar locus technique is prone to significant systematic bias in the Milky Way for passbands bluer than lambda = 4500 angstrom. The calibration method for J-PLUS DR2 reaches 1-2% precision and 1% accuracy for 12 optical filters within an area of 2176 square degrees. (AU) | |
| FAPESP's process: | 19/10923-5 - Artificial inteligence tools for large galaxy surveys |
| Grantee: | Laerte Sodré Junior |
| Support Opportunities: | Regular Research Grants |