Hot Corino Chemistry in the Class I Binary Source Ser-emb 11
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Hot Corino Chemistry in the Class I Binary Source Ser-emb 11. / Martin-Domenech, Rafael; Bergner, Jennifer B.; Öberg, Karin I.; Carpenter, John; Law, Charles J.; Huang, Jane; Jørgensen, Jes K.; Schwarz, Kamber; Wilner, David J.
I: Astrophysical Journal, Bind 923, Nr. 2, 155, 2021.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Hot Corino Chemistry in the Class I Binary Source Ser-emb 11
AU - Martin-Domenech, Rafael
AU - Bergner, Jennifer B.
AU - Öberg, Karin I.
AU - Carpenter, John
AU - Law, Charles J.
AU - Huang, Jane
AU - Jørgensen, Jes K.
AU - Schwarz, Kamber
AU - Wilner, David J.
PY - 2021
Y1 - 2021
N2 - We report the detection of more than 120 emission lines corresponding to eight complex organic molecules (COMs; CH3OH, CH3CH2OH, CH3OCH3, CH3OCHO, CH3COCH3, NH2CHO, CH2DCN, and CH3CH2CN) and three isotopologues (CH2DOH, (CH3CN)-C-13, and (CH3CN)-N-15) toward the western component of the Ser-emb 11 binary young stellar object using observations with the Atacama Large Millimeter/submillimeter Array at similar to 1 mm. The complex organic emission was unresolved with a similar to 0.'' 5 beam (similar to 220 au) in a compact region around the central protostar, and a population diagram analysis revealed excitation temperatures above 100 K for all COMs, indicating the presence of a hot corino. The estimated column densities were in the range of 10(17)-10(18) cm(-2) for the O-bearing COMs, and three orders of magnitude lower for the N-bearing species. We also report the detection of H2CO and CH3OH emission in a nearby millimeter source that had not been previously cataloged. Ser-emb 11 is classified in the literature as a Class I source near the Class 0/I cutoff. The estimated COM relative abundances in Ser-emb 11 W and the other three Class I hot corino sources reported in the literature are consistent with those of Class 0 hot corinos, suggesting a continuity in the chemical composition of hot corinos during protostellar evolution.
AB - We report the detection of more than 120 emission lines corresponding to eight complex organic molecules (COMs; CH3OH, CH3CH2OH, CH3OCH3, CH3OCHO, CH3COCH3, NH2CHO, CH2DCN, and CH3CH2CN) and three isotopologues (CH2DOH, (CH3CN)-C-13, and (CH3CN)-N-15) toward the western component of the Ser-emb 11 binary young stellar object using observations with the Atacama Large Millimeter/submillimeter Array at similar to 1 mm. The complex organic emission was unresolved with a similar to 0.'' 5 beam (similar to 220 au) in a compact region around the central protostar, and a population diagram analysis revealed excitation temperatures above 100 K for all COMs, indicating the presence of a hot corino. The estimated column densities were in the range of 10(17)-10(18) cm(-2) for the O-bearing COMs, and three orders of magnitude lower for the N-bearing species. We also report the detection of H2CO and CH3OH emission in a nearby millimeter source that had not been previously cataloged. Ser-emb 11 is classified in the literature as a Class I source near the Class 0/I cutoff. The estimated COM relative abundances in Ser-emb 11 W and the other three Class I hot corino sources reported in the literature are consistent with those of Class 0 hot corinos, suggesting a continuity in the chemical composition of hot corinos during protostellar evolution.
KW - COMPLEX ORGANIC-MOLECULES
KW - LOW-MASS PROTOSTARS
KW - ALMA
KW - SUBMILLIMETER
KW - MILLIMETER
KW - SERPENS
KW - POPULATION
KW - ABUNDANCES
KW - EVOLUTION
KW - NITROGEN
U2 - 10.3847/1538-4357/ac26b9
DO - 10.3847/1538-4357/ac26b9
M3 - Journal article
VL - 923
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 2
M1 - 155
ER -
ID: 288264227