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cm to submm spectra of H_2_C=CH-CH_2_NC
Organic isocyanides have an interesting astrochemistry and some of these molecules have been detected in the interstellar medium (ISM). However, rotational spectral data for... -
Detection of CH_3_COOCH_3_ in Orion
We report on the discovery of methyl acetate, CH_3_COOCH_3_, through the detection of a large number of rotational lines from each one of the spin states of the molecule: AA... -
Ethyl cyanide, CH_3_CH_2_CN, vibrational states
Ethyl cyanide, CH_3_CH_2_CN, is an important interstellar molecule with a very dense rotational-vibrational spectrum. On the basis of new laboratory data in the range of... -
Fe^13+^, Fe^16+^, Fe^17+^ cross-section measurements
We report measurements of electron impact ionization for Fe^13+^, Fe^16+^, and Fe^17+^ over collision energies from below threshold to above 3000eV. The ions were recirculated... -
FeXIV, FeXV and FeXVI transitions
The Fe unresolved transition arrays (UTAs) produce prominent features in the ~15-17{AA} wavelength range in the spectra of active galactic nuclei (AGNs). Here, we present new... -
Terrestrial exoplanet atmospheres. I.
We present a comprehensive photochemistry model for exploration of the chemical composition of terrestrial exoplanet atmospheres. The photochemistry model is designed from the... -
Fe^9+^ and Fe^10+^ cross-section measurements
We have measured electron impact ionization from the ground state of Fe^9+^ and Fe^10+^ over the relative electron-ion collision energy ranges 200-1900eV and 250-1800eV,... -
Far-IR spectrum of ethylene oxide (CH_2_-O-CH_2_)
High-resolution Fourier Transform Infrared spectroscopy (FTIR) spectra of ethylene oxide (CH_2_-O-CH_2_) have been measured in the far-infrared region using synchrotron... -
r-process peaks elements in HD 160617
We report the first detection of elements at all three r-process peaks in the metal-poor halo star HD 160617. These elements include arsenic and selenium, which have not been... -
^12^C/^13^C ratio for 18 galactic R CrB stars
Observed spectra of R Coronae Borealis (RCB) and hydrogen-deficient carbon (HdC) stars are analyzed by synthesizing the C_2_ Swan bands (1, 0), (0, 0), and (0, 1) using our... -
FeIX energy levels
New calculations of the energy levels, radiative transition rates, and collisional excitation rates of Fe IX have been carried out using the Flexible Atomic Code (FAC; Gu... -
Effective collision strengths in NiII
In this paper, we present collision strengths and Maxwellian averaged effective collision strengths for the electron-impact excitation of NiII. Attention is expressly... -
Ground-state contributions around s-process
Modern models of s-process nucleosynthesis in stars require stellar reaction rates of high precision. Most neutron-capture cross-sections in the s-process have been measured,... -
Deuterated chemistry of the early universe
A comprehensive chemistry of the highly deuterated species D_2_, D^+^2, D_2_H^+^, and D^+^3 in the early universe is presented. Fractional abundances for each are calculated as... -
Production of the p-process nuclei in SNe Ia
We calculate the nucleosynthesis of proton-rich isotopes in the carbon-deflagration model for Type Ia supernovae (SNe Ia). The seed abundances are obtained by calculating the... -
Cyano- to methanol and ammonia observations
As part of an effort to study gas-grain chemical models in star-forming regions as they relate to molecules containing cyanide (-C{\equiv}N) groups, we present here a search for... -
The submillimeter spectrum of glycolaldehyde
Glycolaldehyde (HOCH_2_CHO) is a sugar-related interstellar prebiotic molecule that has been detected in two star-forming regions, Sgr B2(N) and G31.41+0.31. Glycolaldehyde is... -
Ionization energies of CnN(n=4-12)
Results from single photon vacuum ultraviolet photoionization of astrophysically relevant C_n_N clusters, n=4-12, in the photon energy range of 8.0eV-12.8eV are presented. The... -
Complete spectrum of ethyl cyanide
There is a general consensus that many of the unidentified features in astrophysical spectra are due to low lying excited vibrational and torsional states of a few molecules... -
SiS line list
We present Spitzer spectra of S stars, which are cool evolved stars with a C/O ratio near unity, some of which have enhanced s-process abundances. We present the detection of a...
