Secondary standards in the UKIRT faint standard fields
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arXiv
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| Hauptverfasser: | , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866912688210182144 |
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| author | Górski, Marek Pietrzyński, Grzegorz Karczmarek, Paulina Hajdu, Gergely Kicia, Mirosław Kałuszyński, Mikołaj Eimer, Joseph R. Smee, Stephen A. Zgirski, Bartłomiej Wielgórski, Piotr Narloch, Weronika |
| author_facet | Górski, Marek Pietrzyński, Grzegorz Karczmarek, Paulina Hajdu, Gergely Kicia, Mirosław Kałuszyński, Mikołaj Eimer, Joseph R. Smee, Stephen A. Zgirski, Bartłomiej Wielgórski, Piotr Narloch, Weronika |
| contents | We present precise J- and K-band photometric measurements for 128 near-infrared secondary standard stars, located in the 19 UKIRT/MKO primary faint standard fields. The data were collected over more than 50 nights, covering a decade of observations between 2008 and 2018 at the ESO La Silla Observatory, using the New Technology Telescope (NTT) equipped with the SOFI NIR camera. Presented magnitudes are calibrated onto the MKO photometric system. The J- and K-band magnitudes range from 10 to 15.8 mag, with median values of $\tilde{J}$ = 13.5 and $\tilde{K}$ = 13 mag. The selection process ensured high photometric quality, with a precision better than 0.01 mag for all stars. The catalog excludes stars with close neighbors, high proper motion, or variable stars. Using these fields for standardization can improve the precision and accuracy of photometric calibrations without increasing the observational time cost. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_02945 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Secondary standards in the UKIRT faint standard fields Górski, Marek Pietrzyński, Grzegorz Karczmarek, Paulina Hajdu, Gergely Kicia, Mirosław Kałuszyński, Mikołaj Eimer, Joseph R. Smee, Stephen A. Zgirski, Bartłomiej Wielgórski, Piotr Narloch, Weronika Instrumentation and Methods for Astrophysics We present precise J- and K-band photometric measurements for 128 near-infrared secondary standard stars, located in the 19 UKIRT/MKO primary faint standard fields. The data were collected over more than 50 nights, covering a decade of observations between 2008 and 2018 at the ESO La Silla Observatory, using the New Technology Telescope (NTT) equipped with the SOFI NIR camera. Presented magnitudes are calibrated onto the MKO photometric system. The J- and K-band magnitudes range from 10 to 15.8 mag, with median values of $\tilde{J}$ = 13.5 and $\tilde{K}$ = 13 mag. The selection process ensured high photometric quality, with a precision better than 0.01 mag for all stars. The catalog excludes stars with close neighbors, high proper motion, or variable stars. Using these fields for standardization can improve the precision and accuracy of photometric calibrations without increasing the observational time cost. |
| title | Secondary standards in the UKIRT faint standard fields |
| topic | Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2511.02945 |