Supergiant Variables: Recent Observational Results

Autor: J. R. Percy
Rok vydání: 1993
Předmět:
Zdroj: International Astronomical Union Colloquium. 134:123-136
ISSN: 0252-9211
DOI: 10.1017/s0252921100014019
Popis: Recent observations of several types of supergiant variable stars are reviewed: massive blue, yellow and red supergiants; classical and population II Cepheids; RV Tauri stars; yellow semi-regular (SRd) variables, including UU Herculis stars; and R Coronae Borealis stars. The emphasis is on non-linear aspects such as: amplitude and shape of the light and velocity curves; multiperiodicity, irregularity and chaos; long-term changes in period and amplitude; episodic and continuous mass loss.
Databáze: OpenAIRE