The Classification of Cepheids by Pulsation Modes and the Problem of the Distance scale
Abstract
The neural network algorithm and analysis of the `period-radius' diagram are used to classify the classical cepheids of our Galaxy by pulsation modes. The LMC cepheids with I - band photometry from OGLE have been used as a training sample. Infrared and V-band photometric data for Galactic cepheids have been taken from Berdnikov's data base. We calculated the radii of cepheids using our original and published radial velocities, V- and I-band photometry.
- Publication:
-
The Three-Dimensional Universe with Gaia
- Pub Date:
- January 2005
- Bibcode:
- 2005ESASP.576..723Z
- Keywords:
-
- Cepheids;
- Classification;
- Neural networks