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High-resolution observations of CH3CN in the hot corino of NGC1333-IRAS4A

Published online by Cambridge University Press:  01 February 2008


Sandrine Bottinelli
Affiliation:
Laboratoire d'Astrophysique de GrenobleB.P. 53, 38041 Grenoble Cedex 9, France email: cecilia.ceccarelli@obs.ujf-grenoble.fr Institute for Astronomy, University of Hawai‘i2680 Woodlawn Drive, Honolulu, HI 96822, USA email: jpw@ifa.hawaii.edu NASA Astrobiology Institute
Cecilia Ceccarelli
Affiliation:
Laboratoire d'Astrophysique de GrenobleB.P. 53, 38041 Grenoble Cedex 9, France email: cecilia.ceccarelli@obs.ujf-grenoble.fr NASA Astrobiology Institute
Roberto Neri
Affiliation:
Institut de RadioAstronomie MillimétriqueSaint-Martin d'Hères, France email: neri@iram.fr
Jonathan P. Williams
Affiliation:
Institute for Astronomy, University of Hawai‘i2680 Woodlawn Drive, Honolulu, HI 96822, USA email: jpw@ifa.hawaii.edu NASA Astrobiology Institute

Abstract

The formation and evolution of complex organic molecules in the early stages of solar-type protostars (Class 0 objects) is crucial as it sets the stage for the content in pre-biotic molecules of the subsequent proto-planetary nebula. In order to understand the chemistry of these Class 0 objects, it is necessary to perform interferometric observations which allow us to resolve the hot corino, that is the warm, dense inner region of the envelope of a Class 0 object, where the complex organic molecules are located. Such observations exist for only two objects so far, IRAS16293-2422 and NGC1333-IRAS2A and we present here Plateau de Bure interferometric maps of a third hot corino, NGC1333-IRAS4A, which show emission of the complex organic molecule CH3CN arising from a region of size ~0.8″/175 AU, that is, of the order of the size of the Solar System. Combining these high-angular resolution maps with prior single-dish observations of the same transitions of CH3CN indicates that extended emission is also present, and we investigate the implications for organic chemistry in hot corinos.


Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2008

References

Bottinelli, S., Ceccarelli, C., Neri, R., & Williams, J. P. 2008, ApJ, submittedGoogle Scholar
Bottinelli, S., Ceccarelli, C., Williams, J. P. & Lefloch, B. 2007, A&A, 463, 601Google Scholar
Bottinelli, S., Ceccarelli, C., Lefloch, B., Williams, J. P., et al. 2004a, ApJ, 615, 354CrossRefGoogle Scholar
Bottinelli, S., Ceccarelli, C., Neri, R., Williams, J. P., et al. 2004b, ApJ (Letters) 617, L69CrossRefGoogle Scholar
Cazaux, S., Tielens, A. G. G. M., Ceccarelli, C., Castets, A., et al. 2003, ApJ (Letters), 593, L51CrossRefGoogle Scholar
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High-resolution observations of CH3CN in the hot corino of NGC1333-IRAS4A
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