TY - JOUR
T1 - Early Results of the 3mm Spectral Line Survey toward the L1157 B1 Shocked Region
AU - Sugimura, M.
AU - Yamaguchi, T.
AU - Sakai, T.
AU - Umemoto, T.
AU - Sakai, N.
AU - Takano, S.
AU - Aikawa, Y.
AU - Hirano, N.
AU - Liu, S-Y.
AU - Millar, TJ
AU - Nomura, H.
AU - Su, Y-N.
AU - Takakuwa, S.
AU - Yamamoto, S.
PY - 2011
Y1 - 2011
N2 - We have conducted a sensitive 3mm observation toward the shocked region, Lynds 1157 B1, which is an interaction
spot between a molecular outflow and its ambient gas. We have successfully detected the CH3CHO, HCOOCH3,
and HCOOH lines, as well as the CH2DOH line. The abundances of these molecules relative to CH3OH are found to be lower than those in the low-mass star-forming core, IRAS 16293-2422. Since these molecules are thought to evaporate from grain mantles, the observational results mean that complex molecules are less abundant in grain mantles residing in the ambient cloud surrounding a prestellar/protostellar core. Instead, efficient formation of the complex organic species and deuterated species should take place in a prestellar/protostellar core. The present result verifies the importance of an unbiased line survey of this source.
AB - We have conducted a sensitive 3mm observation toward the shocked region, Lynds 1157 B1, which is an interaction
spot between a molecular outflow and its ambient gas. We have successfully detected the CH3CHO, HCOOCH3,
and HCOOH lines, as well as the CH2DOH line. The abundances of these molecules relative to CH3OH are found to be lower than those in the low-mass star-forming core, IRAS 16293-2422. Since these molecules are thought to evaporate from grain mantles, the observational results mean that complex molecules are less abundant in grain mantles residing in the ambient cloud surrounding a prestellar/protostellar core. Instead, efficient formation of the complex organic species and deuterated species should take place in a prestellar/protostellar core. The present result verifies the importance of an unbiased line survey of this source.
M3 - Article
VL - 63
SP - 459
EP - 472
JO - Publications of the Astronomical Society of Japan
JF - Publications of the Astronomical Society of Japan
SN - 0004-6264
ER -