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We present new observations of the CB130 region, composed of three separatecores. Using the \textit{Spitzer Space Telescope} we detected a Class 0 and aClass II object in one of these, CB130-1. The observed photometric data from\textit{Spitzer} and ground-based telescopes are used to establish the physicalparameters of the Class 0 object. SED fitting with a radiative transfer modelshows that the luminosity of the Class 0 object is 0.14 $-$ 0.16 L$_{\odot}$,which is a low luminosity for a protostellar object. In order to constrain thechemical characteristics of the core having the low luminosity object, wecompare our molecular line observations to models of lines including abundancevariations. We tested both ad hoc step function abundance models and a seriesof self-consistent chemical evolution models. In the chemical evolution models,we consider a continuous accretion model and an episodic accretion model toexplore how variable luminosity affects the chemistry. The step functionabundance models can match observed lines reasonably well. The best fittingchemical evolution model requires episodic accretion and the formation ofCO$_2$ ice from CO ice during the low luminosity periods. This process removesC from the gas phase, providing a much improved fit to the observed gas-phasemolecular lines and the CO$_2$ ice absorption feature. Based on the chemicalmodel result, the low luminosity of CB130-1 is explained better as a quiescentstage between episodic accretion bursts rather than being at the firsthydrostatic core stage.

The Spitzer c2d Survey of Nearby Dense Cores XI : Infrared and Submillimeter Observations of CB130