Photometry of Variable Stars, and System Transformability Over Long Time Intervals

Abstract

The fundamental problem of long-term photometric monitoring of variable stars and of multi-wavelength photometric campaigns is the problem of bringing the data to a common standard. Such homogenization can be achieved only when the measurements are made in photometric systems that are truly transformable. This fundamental problem is of a technical nature, and photometric observers, sometimes, are not aware of the problems. This frequently leads to over-interpretation of the data.

Keywords

• technique
• photometric stars
• variables
• individual
• η carinae