Abstract
Contemporaneous near-infrared (0.8–2.5 μm) and infrared (3–14 μm) spectroscopy is presented of the previously uncharacterized IRAS source 07077+1536. The data show it to be a carbon star embedded in a circumstellar dust envelope. The near-infrared spectrum displays molecular absorption features of C2, CN, and CO, while the 11 μm emission feature from SiC is present in the thermal infrared. The spectral energy distribution of IRAS 07077+1536 is similar to the so-called extreme carbon stars in that it consists primarily of a reddened stellar photosphere and thermal dust emission. However, the extinction is much less and the dust significantly warmer (~900 K vs. ~300 K) than in extreme carbon stars such as AFGL 3068. IRAS 07077+1536 is also unusually bright shortward of 0.5 μm, an aspect that could be due to variability but may indicate the presence of a binary companion or a foreground star.
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