Type of variability: M

Mira (Omicron) Ceti-type variables.

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These are long-period variable giants with characteristic late-type emission spectra (Me, Ce, Se) and light amplitudes from 2.5 to 11 mag in V. Their periodicity is well pronounced, and the periods lie in the range between 80 and 1000 days. Infrared amplitudes are usually less than in the visible and may be <2.5 mag. For example, in the K band they usually do not exceed 0.9 mag. If the amplitudes exceed 1 - 1.5 mag , but it is not certain that the true light amplitude exceeds 2.5 mag, the symbol "M" is followed by a colon, or the star is attributed to the semiregular class with a colon following the symbol for that type (SR).

General Catalog of Variable Stars

43

stars

0

observed in last month


Name Type Brightness
R AQL M 5.5 – 12.0
R ARI M 7.1 – 14.3
T ARI M 7.3 – 11.5
U ARI M 7.2 – 15.8
R BOO M 6.0 – 13.3
R CAS M 4.7 – 13.5
U CAS M 8.0 – 15.7
V CAS M 6.9 – 13.4
W CAS M 7.8 – 12.5
S CEP M 7.4 – 12.9
T CEP M 5.2 – 11.3
OMI CET M 2.0 – 10.1
S CMI M 6.6 – 13.2
S CRB M 5.8 – 14.1
V CRB M 6.9 – 12.6
R CVN M 6.5 – 12.9
KHI CYG M 3.3 – 14.2
RT CYG M 6.0 – 13.1
R CYG M 6.1 – 14.4
U CYG M 5.9 – 12.1