Probing episodic accretion with chemistry: CALYPSO observations of the very-low-luminosity Class 0 protostar IRAM 04191+1522 - Results from the CALYPSO IRAM-PdBI survey

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Fig. 5

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Model with an increased source luminosity of 12 L_⊙. Left: density profile (light blue) and temperature profiles of IRAM 04191 for a source luminosity of 0.08 L_⊙ (brown) and 12 L_⊙ (red). Both temperature profiles are self-consistently computed with the transphere code. Right: chemical abundances of C¹⁸ O (red) and N₂H⁺ (blue) calculated for a source luminosity of 12 L_⊙, again after a chemical age of ~10⁴ yr.

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