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Displaying 51 - 75 of 320

Investigating the Limits of Chemical Complexity in SgrB2(N): A Rigorous Attempt to Confirm 1,3-Dihydroxyacetone

May 10, 2006

Author(s)

A J. Apponi, D T. Halfen, L M. Ziurys, J M. Hollis, A Remijan, Francis J. Lovas

A targeted search for confirming transitions of 1,3-dihydroxyacetone, (CH2OH)2CO, (hereafter DHA), was made toward SgrB2(N) using the ARO SMT and 12m telescope at mm wavelengths. In addition, a targeted search for glyceraldehyde, CH2OHCHOHCHO, was made

Detection of Acetamide (CH 3 CONH 2 ): The Largest Interstellar Molecule With a Peptide Bond

May 2, 2006

Author(s)

J M. Hollis, Francis J. Lovas, A Remijan, P R. Jewell, Vadim V. Ilyushin, I Kleiner

Acetamide (CH3CONH2) has been detected in emission and absorption toward the star-forming region Sagittarius B2(N) with the 100-m Green Bank Telescope (GBT) by means of four A-species and four E-species rotational transitions. All transitions have energy

Methyltriacetylene (Ch 3 C 6 H) Toward TMC-1: Presently, the Largest Detected Symmetric Top

April 28, 2006

Author(s)

A Remijan, J M. Hollis, Lewis E. Snyder, P R. Jewell, Francis J. Lovas

We report the detection of a new interstellar methylpolyyne, CH3C6H (methyltriacetylene) with the 100-m Green Bank Telescope (GBT). Ten spectral lines of this species were detected toward TMC-1: the K=0 and K=1 components of the 12,K-11,K, 13,K-12,K, 14,K

Confirmation of Interstellar Methycyanodiacetylene (CH3C5N)

April 11, 2006

Author(s)

Lewis E. Snyder, J M. Hollis, P R. Jewell, Francis J. Lovas, A J. Remijan

Ten spectral lines of the symmetric-top molecule methylcyanodiacetylene (CH3C5N) have been detected with the 100 m Green Bank Telescope (GBT) toward the Taurus molecular cloud TMC-1. Both K=0 and K=1 components of the 12K-11K, 13K-12K, 14K-13K, 15K-14K

Hyperfine Structure Identification of Interstellar Cyanoallene Toward TMC-1

January 10, 2006

Author(s)

Francis J. Lovas, A Remijan, J M. Hollis, P R. Jewell, Lewis E. Snyder

Interstellar cyanoallene (CH2CCHCN) has been detected with the 100-m Green Bank Telescope (GBT) toward the dark Taurus Molecular Cloud (TMC-1) by means of the 414-313, 404-303, 515 -414, and 505-404 rotational transitions at 20.2 GHz, 20.6 GHz, 25.2 GHz

Microwave Spectrum and Structure of Methyl Phosphonic Difluoride

January 2, 2006

Author(s)

R D. Suenram, Francis J. Lovas, David F. Plusquellic, M W. Elizy, J M. Lochner, J O. Jensen, A C. Samuels

The rotational spectrum of methyl phosphonic difluoride has been reinvestigated using a pulsed-molecular-beam Fabry-Perot cavity microwave spectrometer. The enhanced resolution of the Fourier transform microwave (FTMW) spectrometer (compared to the

Microwave Spectrum and Structure of Methyl Phosphonic Difluoride

January 1, 2006

Author(s)

R D. Suenram, Francis J. Lovas, David F. Plusquellic, M W. Ellzy, J M. Lochner, J O. Jensen, A C. Samuels

Microwave Spectrum of the Heterodimers: CH 3 OH-CO 2 and CH 3 OH-H 2 CO

January 1, 2006

Author(s)

Vadim V. Ilyushin, Francis J. Lovas, David F. Plusquellic

The microwave spectrum of a two-top peptide mimetic: The N-acetyl alanine methyl ester molecule

January 1, 2006

Author(s)

J Demaison, David F. Plusquellic, I Kleiner, R D. Suenram, R J. Lavrich, Francis J. Lovas, Gerald T. Fraser, Vadim V. Ilyushin

The Microwave Spectrum of a Two-top Peptide Mimetic: The N-Acetyl Alanine Methyl Ester Molecule

January 1, 2006

Author(s)

David F. Plusquellic, I Kleiner, J Demaison, R D. Suenram, R J. Lavrich, Francis J. Lovas, Gerald T. Fraser, Vadim V. Ilyushin

Interstellar Isomers: The Importance of Bonding Energy Differences

October 10, 2005

Author(s)

A J. Remijan, J M. Hollis, Francis J. Lovas, David F. Plusquellic, P R. Jewell

We present new observations of large cyanide molecules and their corresponding isocyanide isomers toward the Sgr B2(N)molecular cloud. We report the first detection of the JK=10-00 transition of methyl isocyanide (CH3NC) with the 100-m Green Bank Telescope

Millimeter Wave Spectrum of Glycine

May 1, 2005

Author(s)

Vadim V. Ilyushin, E A. Alekseev, S K. Dyubko, R A. Motiyenkoa, Francis J. Lovas

Interstellar Chemistry: A Strategy for Detecting Polycyclic Aromatic Hydrocarbons in Space

March 1, 2005

Author(s)

Francis J. Lovas, R J. McMahon, J-U Grabow, M Schnell, J Mack, L T. Scott, R L. Kuczkowski

Polycyclic aromatic hydrocarbons (PAHs) represent important targets for radio astronomy because they offer the possibilities of validating the PAH hypothesis and revealing new insight into the chemistry of interstellar space. Polycyclic aromatic