Complex organic molecules in an early stage of protostellar evolution

Details Complex organic molecules in an early stage of protostellar evolution Complex organic molecules in an early stage of protostellar evolution

Jan 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008ap%26ss.313..153s&link_type=abstract

Astrophysics and Space Science, Volume 313, Issue 1-3, pp. 153-157

Astronomy and Astrophysics

Astrophysics

2

Ism: Individual (Ngc1333 Iras4B), Ism: Individual (L1527), Ism: Individual (Ngc2264), Ism: Molecules, Stars: Formation

Scientific paper

We have detected the rotational lines of HCOOCH3 toward a Class 0 low-mass protostar, NGC1333 IRAS4B, which is reported to be extremely young according to the dynamical age of the molecular outflow (a few 100 yr). This suggests that the complex organic molecules appear from the very early stage of protostellar evolution. On the other hand, the complex organic molecules are not detected in a more evolved protostar, L1527. We have also found a similar trend in a massive star forming region, NGC2264. The HCOOCH3 emission is almost absent toward IRS1, whereas it is concentrated near MMS3, which is younger than IRS1. In addition, the HCOOCH3 intensity peak is slightly shifted from the dust emission peak, as is seen in the Orion KL Compact Ridge, giving an important clue to solve its origin.

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