Interstellar cyanoacetylene Formula transitions
نویسندگان
چکیده
منابع مشابه
Interstellar Phase Transitions Stimulated by Time-dependent Heating
We use three-dimensional hydrodynamic numerical simulations to study phase transformations occurring in a clumpy interstellar gas exposed to time-dependent volumetric heating. To mimic conditions in the Galactic interstellar medium, we take a numerical model of a turbulent multiphase medium from Kritsuk & Norman (2002) computed in a periodic box with mean density n0 = 0.25 cm−3 and mean pressur...
متن کاملFormation of Interstellar Clouds: Parker Instability with Phase Transitions
We follow numerically the nonlinear evolution of the Parker instability in the presence of phase transitions from a warm to a cold HI interstellar medium in two spatial dimensions. The nonlinear evolution of the system favors modes that allow the magnetic field lines to cross the galactic plane. Cold HI clouds form with typical masses ≃ 10 M⊙, mean densities ≃ 20 cm, mean magnetic field strengt...
متن کاملHCNCC – the possible isomer of cyanoacetylene
HCNCC, the exotic linear rearrangement of cyanoacetylene, is a probable interstellar molecule. The Letter compares CCSD(T)/aug-cc-pVTZ energies of five cyanoacetylene isomers, and predicts properties of the HCNCC ground singlet electronic state: geometry, equilibrium rotational constant, electric dipole moment and vibrational frequencies – based on the coupled-clusters and density functional th...
متن کاملVibrational spectroscopy of matrix-isolated, mass-selected cyanoacetylene cations
Recent infrared spectroscopic results from a new setup for the deposition of mass-selected ions in neon matrices are presented. The strong infrared signal observed for the asymmetric stretch of CNC and the appearance of the corresponding band for CNC in its natural isotopic abundance, demonstrates the sensitivity and usefulness of the apparatus. Evidence of a combination band of CNC involving t...
متن کاملObservation of Inter-rydberg Transitions in H2 Coinciding with Diffuse Interstellar Bands
In a laboratory study inter-Rydberg transitions originating from the lowest rotational levels of the C P v 5 5 and v 5 6 states of molecular hydrogen are found to coincide with frequency positions and widths of diffuse interstellar bands. It is the first time that diffuse interstellar bands are assigned to transitions measured in gas-phase molecules that are known to exist in interstellar space...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 1977
ISSN: 0035-8711,1365-2966
DOI: 10.1093/mnras/180.4.585