The SAGE photometric survey: technical description
Abstract
To investigate a huge sample of data related to the Stellar Abundance and Galactic Evolution (SAGE) survey in more detail, we are performing a northern sky photometric survey named SAGES with the SAGE photometric system. This system consists of eight filters: Strӧmgren-u, SAGE-v, SDSS g, r, i, DDO-51, Hα wide and Hα narrow, including three Sloan broadband filters, three intermediate-band filters, two narrow-band filters and one newly-designed narrow-band filter. SAGES covers ∼12 000 square degrees of the northern sky with δ > -5°, excluding the Galactic disk (|b| < 10°) and the sky area 12 h < RA < 18 h. The photometric detection limit depth at signal-to-noise ratio 5σ can be as deep as V∼20 mag. SAGES will produce a photometric catalog with uniform depth for ∼500 million stars with atmospheric parameters including effective temperature T eff, surface gravity log g and metallicity [Fe/H], as well as interstellar extinction to each individual target. In this work, we will briefly introduce the SAGE photometric system, the SAGE survey and a preliminary test field of the open cluster NGC 6791 and its surroundings.
- Publication:
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Research in Astronomy and Astrophysics
- Pub Date:
- December 2018
- DOI:
- 10.1088/1674-4527/18/12/147
- arXiv:
- arXiv:1806.09110
- Bibcode:
- 2018RAA....18..147Z
- Keywords:
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- Astrophysics - Instrumentation and Methods for Astrophysics
- E-Print:
- doi:10.1088/1674-4527/18/12/147