Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...392l..87m&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 392, no. 2, June 20, 1992, p. L87-L90.
Astronomy and Astrophysics
Astronomy
77
Emission Spectra, Infrared Astronomy Satellite, Interstellar Matter, Molecular Clouds, Silicon Oxides, Star Formation, Stellar Evolution, Stellar Mass
Scientific paper
Intense thermal emission lines of SiO (v = 0, J = 1-0 and 2-1) are detected in a low-mass star-forming region, L1157. The emission is confined to a compact region toward the blue lobe of the CO outflow, where shock heating due to interaction between the outflow and dense gas has been found. In contrast, the emission of SiO is not detected toward the IRAS source and the red lobe. The distribution of SiO is different from that of CS; the intense CS line is observed in the vicinity of the IRAS source. The peak fractional abundance of SiO is estimated to be about 10 exp -7. This value is higher than a typical upper limit in quiescent dark clouds by a factor of about 10,000. These results suggest that SiO is produced in the shocked region probably through grain destruction processes.
Mikami Hitomi
Saito Shuji
Umemoto Tomofumi
Yamamoto Satoshi
No associations
LandOfFree
Detection of SiO emission in the L1157 dark cloud does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Detection of SiO emission in the L1157 dark cloud, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection of SiO emission in the L1157 dark cloud will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1200450