FBS 0137+400: A MASS-LOSING AGB CARBON MIRA?

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Abstract

The absolute K-band magnitude determined for the object FBS 0137+400 is typical for Asymptotic Giant Branch (AGB) carbon stars. The large J – K color index as well as large amplitude variability (ΔK > 0.4) and the presence of Hα in the emission indicate also that this star is a mass-losing long-period Carbon Mira variable with thick circumstellar shell. The IRAS LRS spectrum indicates the presence of a dust shell surrounding this object. Monitoring of the K-band magnitude is necessary for the determination of the pulsation period of FBS 0137+400.

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