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Unified Picture of Chemical Differentiation in Disk-Forming Regions of Low-Mass Protostellar Sources

Published online by Cambridge University Press:  13 January 2020

Yoko Oya
Affiliation:
Department of Physics, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, Japan email: oya@taurus.phys.s.u-tokyo.ac.jp
Corresponding

Abstract

Young low-mass protostellar sources are known to show significant chemical diversity in their envelopes at a few 1000s au scale; two distinct cases are hot corino chemistry and warm carbon-chain chemistry (WCCC). It is of great interest how the chemical diversity is inherited to chemistry of disk-forming regions. With the recent ALMA observations, we found that the chemical diversity in envelopes is indeed delivered into the disk-forming regions at a 100 au scale. Moreover, the chemical composition changes drastically from envelopes to disks. We also found sources with the hybrid chemical characteristics; both hot corino chemistry and WCCC occur in spatially separated parts of a single source. This hybrid case may be a common occurrence, while hot corinos and WCCC sources are regarded as distinct cases. This unified view of chemistry in disk-forming regions will be an important clue to tracing the chemical evolution from protostellar cores to protoplanetary disks.

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Contributed Papers
Copyright
© International Astronomical Union 2020 

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References

Aikawa, Y., Wakelam, V., Garrod, R.T., & Herbst, E. 2008, ApJ, 674, 993 CrossRefGoogle Scholar
Bottinelli, S., Ceccarelli, C., Neri, R., et al. 2004, ApJL, 617, L69 CrossRefGoogle Scholar
Favre, C., Jørgensen, J.K., Field, D., et al. 2014, ApJ, 790, 55 CrossRefGoogle Scholar
Higuchi, A.E., Sakai, N., Watanabe, Y., et al. 2018, ApJS, 236, 52 CrossRefGoogle Scholar
Imai, M., Sakai, N., Oya, Y., et al. 2016, ApJL, 830, L37 CrossRefGoogle Scholar
Jørgensen, J.K., Favre, C., Bisshop, S., et al. 2012, ApJL, 757, L4 CrossRefGoogle Scholar
Keene, J., Hildebrand, R.H., Whitcomb, S.E., & Harper, D.A. 1980, ApJL, 240, L43 CrossRefGoogle Scholar
Oya, Y., Sakai, N., López-Sepulcre, A., et al. 2016, ApJ, 824, 88 CrossRefGoogle Scholar
Oya, Y., Sakai, N., López-Sepulcre, A., et al. 2017, ApJ, 837, 174 CrossRefGoogle Scholar
Oya, Y., Moriwaki, K., Onishi, S., et al. 2018, ApJ, 854, 96 CrossRefGoogle Scholar
Pineda, J.E., Maury, A.J., Fuller, G.A., et al. 2012, A&A, 544, L7 Google Scholar
Sakai, N., Sakai, T., Hirota, T., & Yamamoto, S. 2008, ApJ, 672, 371 CrossRefGoogle Scholar
Sakai, N., & Yamamoto, S. 2013, Chemical Review, 113, 8981 CrossRefGoogle Scholar
Sakai, N., Oya, Y., Sakai, T., et al. 2014, ApJL, 791, L38 CrossRefGoogle Scholar

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