The amplitude extension and the amplitudes limit of red variables.
Abstract
It is shown that the amplitudes relation of Mira type variable stars may be applied to all red variables. If the absorption index Vi-U sub a of the amplitudes relation is zero, the visual amplitude of red variables is expressed by the function AV = AR + A0, with A0 = 1.75 mg. This equation defines two groups of variable stars: Group I, the medium and small amplitude red variables; and Group II, the large amplitude red variables.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- April 1979
- Bibcode:
- 1979A&A....74..146C
- Keywords:
-
- Amplitudes;
- M Stars;
- Variable Stars;
- Amplitude Distribution Analysis;
- Graphs (Charts);
- Mira Variables;
- Stellar Magnitude;
- Tables (Data);
- Astrophysics;
- Red Variables;
- Red Variables:Classification