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An Ammonia Spectral Map of the L1495-B218 Filaments in the Taurus Molecular Cloud: II CCS & HCN Chemistry and Three Modes of Star Formation in the Filaments
Young Min Seo, Liton Majumdar, Paul F. Goldsmith +22
We present deep CCS and HCN observations of the L1495-B218 filaments in the Taurus molecular cloud obtained using the K-band focal plane array on the 100m Green Bank Telescope.…
Methyl cyanide (CH3CN) and propyne (CH3CCH) in the low mass protostar IRAS 16293-2422
Ines Andron, Pierre Gratier, Liton Majumdar +4
Methyl cyanide (CH3CN) and propyne (CH3CCH) are two molecules commonly used as gas thermometers for interstellar gas. They are detected in several astrophysical environments and in…
An Expanded Gas-Grain Model for Interstellar Glycine
Taiki Suzuki, Liton Majumdar, Masatoshi Ohishi +3
The study of the chemical evolution of glycine in the interstellar medium is one of challenging topics in astrochemistry. Here, we present the chemical modeling of glycine in hot c…
Chemical Diversity in Three Massive Young Stellar Objects associated with 6.7 GHz CHOH Masers
Kotomi Taniguchi, Masao Saito, Liton Majumdar +8
We have carried out observations in the 4246 and 82103 GHz bands with the Nobeyama 45-m radio telescope, and in the 338.2339.2 and 348.45349.45 GHz bands with the ASTE…
Detection of HOCO+ in the protostar IRAS 16293-2422
Liton Majumdar, Pierre Gratier, Valentine Wakelam +3
The protonated form of CO2, HOCO+, is assumed to be an indirect tracer of CO2 in the millimeter/submillimeter regime since CO2 lacks a permanent dipole moment. Here, we report the…