1  1 - Definition

Eruptive variables are stars varying in brightness because of violent processes and flares occurring in their chromospheres and coronae. The light changes are usually accompanied by shell events or mass outflow in the form of stellar winds of variable intensity and/or by interaction with the surrounding interstellar medium. This class includes the following types:

2  1.1 - Fu Ori-type

3  1.2 - Gamma Cas-type

4  1.3 - Irregular variables

5  1.4 - In-type variables

6  1.5 - Is - rapid irregular variables

7  1.6 - RCB-type variables

8  1.7 - RS CVn-type variables

9  1.8 - S Dor-type variables

10  1.9 - UV Cet-type variables

11  1.10 - WR-type variables

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