Long period variable
A long period variable is a type of variable star in which variations in brightness occur over long timescales of months or years.
Long Period Variable
A variable star with a period ranging from 100 days to over 400 days.
The amount by which we look into the past when we look at a distant galaxy; a time equal to the distance to the galaxy in light-years.
The long period variable is actually Mira A. There is a companion, Mira B, that is much smaller in size than A.
The great long period variable Mira is the fairly prominent star just to the left of center.
R Aquilae is a long period variable: 5.5 to 12 every 284.2 days. The 2000 maximum should occur on 4 June.
Deep Sky Objects: ...
CaII emission is a characteristic phenomenon of long period variables, which is strongly phase-dependent.
AGB stars are typically long period variables, and suffer large mass loss in the form of a stellar wind. A star may lose 50 to 70% of its mass during the AGB phase.
[edit] Circumstellar envelopes of AGB stars ...
Pulsating variables - stars which periodically expand and contract, such as Cepheids, RR Lyrae stars, RV Tauri stars and Long Period Variables.
Eruptive variables - which have flares or mass ejections from their surface.
Perhaps the most interesting thing to see here in Caelum is the variable star R Caeli, a Mira-type long period variable, from 6.7 to 13.7 magnitude every 391 days. It's located one degree south of beta Caeli, and several arc minutes west.
This lies in the top right, between the main sequence and the long period variables. This means that Cepheids have a surface temperature around that of the Sun but are 1,000-100,000 times more luminous.
Cepheids and cepheid-like stars. They have short periods (days to months) and their luminosity cycle is very regular;
Long Period Variables. Their period is longer, on the order of a year, and much less regular.
Used for long period variables. mirage (NASA SP-7, 1965) 1. (Optics) definition submitted by Andy Young, June 30, 1997
An apparently reflected image of an object, caused by abnormal atmospheric refraction.
 See also: Period, Star, Magnitude, Solar, Variable star
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