The amplitude extension and the amplitudes limit of red variables

Details The amplitude extension and the amplitudes limit of red variables The amplitude extension and the amplitudes limit of red variables

Apr 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979a%26a....74..146c&link_type=abstract

Astronomy and Astrophysics, vol. 74, no. 2, Apr. 1979, p. 146-151. Research supported by the Catholic University of Chile.

Astronomy and Astrophysics

Astrophysics

6

Amplitudes, M Stars, Variable Stars, Amplitude Distribution Analysis, Graphs (Charts), Mira Variables, Stellar Magnitude, Tables (Data)

Scientific paper

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.

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