High Resolution $\lambda$=1mm CARMA Observations of Large Molecules in Orion-KL

TL;DR

This study uses high-resolution 1mm CARMA observations to map the spatial distribution of complex molecules in Orion-KL, revealing their origins in different cores and chemical environments.

Contribution

First high-resolution 1mm observations of these molecules in Orion-KL, providing detailed spatial distribution data and insights into their chemical origins.

Findings

Ethyl cyanide and vinyl cyanide originate from multiple cores near Orion hot core.

Dimethyl ether and methyl formate originate from IRc5 and IRc6.

Acetone originates from regions with both N- and O-bearing species.

Abstract

We present high resolution, Combined Array for Research in Millimeter-Wave Astronomy (CARMA), $\lambda$=1mm observations of several molecular species toward Orion-KL. These are the highest spatial and spectral resolution 1mm observations of these molecules to date. Our observations show that ethyl cyanide [C$_2$H$_5$CN] and vinyl cyanide [C$_2$H$_3$CN] originate from multiple cores near the Orion hot core and IRc7. Additionally we show that dimethyl ether [(CH$_3$)$_2$O] and methyl formate [HCOOCH$_3$] originate from IRc5 and IRc6 and that acetone [(CH$_3$)$_2$CO] originates only from areas where both N-bearing and O-bearing species are present.