Volume 552, April 2013
|Number of page(s)||4|
|Published online||29 March 2013|
HH 114 MMS: a new chemically active outflow⋆
Observatorio Astronómico Nacional (IGN),
Alfonso XII 3,
2 Institute for Astrophysics, University of Vienna, Türkenschanzstrasse 17, 1180 Vienna, Austria
Received: 15 February 2013
Accepted: 12 March 2013
Context. A small group of bipolar protostellar outflows display strong emission from shock-tracer molecules such as SiO and CH3OH, and are generally referred to as “chemically active”. The best-studied outflow from this group is the one in L 1157.
Aims. We study the molecular emission from the bipolar outflow powered by the very young stellar object HH 114 MMS and compare its chemical composition with that of the L 1157 outflow.
Methods. We have used the IRAM 30 m radio telescope to observe a number of transitions from CO, SiO, CH3OH, SO, CS, HCN, and HCO+ toward the HH 114 MMS outflow. The observations consist of maps and a two-position molecular survey.
Results. The HH 114 MMS outflow presents strong emission from a number of shock-tracer molecules that dominate the appearance of the maps around the central source. The abundance of these molecules is comparable to the abundance in L 1157.
Conclusions. The outflow from HH 114 MMS is a spectacular new case of a chemically active outflow.
Key words: stars: formation / ISM: abundances / ISM: jets and outflows / ISM: individual objects: HH 114 MMS / ISM: molecules / radio lines: ISM
© ESO, 2013
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.