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| Paper: |
The 0.8 mm Spectral Line Survey toward Low-Mass Protostellar Cores with ASTE |
| Volume: |
476, New Trends in Radio Astronomy in the ALMA Era |
| Page: |
353 |
| Authors: |
Watanabe, Y.; Sakai, N.; Lindberg, J.; Jørgensen, J.; Bisschop, S.; Yamamoto, S. |
| Abstract: |
We have conducted spectral line surveys in the 345 GHz band with Atacama Submillimeter Telescope Experiment (ASTE) 10 m dish toward two low mass class 0 protostars R CrA IRS7B and Serpens SMM4. For R CrA IRS7B, 16 molecular species and 16 isotopologues are identified. Strong emission of CN and CCH is observed, whereas complex organic molecules and long carbon-chain molecules are not detected. This result indicates that the hot corino activity as well as the WCCC activity is weak in R CrA IRS7B. Lindberg & Jørgensen (2012) suggested that UV radiation from the Herbig Be star R CrA significantly affects the chemical composition in R CrA IRS7B. Our results also support their conclusion. For Serpens SMM4, we identified 12 normal molecular species and 8 isotopologues. The chemical composition in Serpens SMM4 is similar to that found in hot corinos, although sulfur bearing species seem slightly deficient. These results illustrates the further chemical diversity in low-mass protostars. |
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