CO and H2O vibrational emission toward Orion Peak 1 and Peak 2
نویسندگان
چکیده
منابع مشابه
Detection of a vibration - rotation emission line of hydrogen deuteride toward Orion Peak 1 : excitation coupling of HD to H
The 2.46 µm v = 1 − 0 R(5) line of deuterated molecular hydrogen, HD, has been detected in the Orion Peak 1 shock emission region, at a surface brightness of (8.5 ± 2.1) × 10 −9 Wm −2 sr −1 over a 6 arcsec 2 area. Comparison of the column density of HD(v = 1, J = 6) with the column density of HD(v = 0, J = 6) previously observed from ISO and the H 2 level column densities toward the same region...
متن کامل2-Peak and 3-Peak Optimal Complex Networks
A central issue in complex networks is tolerance to random failures and intentional attacks. Current literature emphasizes the dichotomy between networks with a power-law node connectivity distribution, which are robust to random failures but fragile to targeted attacks, versus networks with an exponentially decaying connectivity distribution, which are less tolerant to failures but more resili...
متن کاملVibrational dynamics and boson peak in a supercooled polydisperse liquid.
Vibrational density of states (VDOS) in a supercooled polydisperse liquid is computed by diagonalizing the Hessian matrix evaluated at the potential energy minima for systems with different values of polydispersity. An increase in polydispersity leads to an increase in the relative population of localized high-frequency modes. At low frequencies, the density of states shows an excess compared t...
متن کاملAnharmonicity, vibrational instability, and the Boson peak in glasses
We show that a vibrational instability of the spectrum of weakly interacting quasilocal harmonic modes creates the maximum in the inelastic scattering intensity in glasses, the Boson peak. The instability, limited by anharmonicity, causes a complete reconstruction of the vibrational density of states ~DOS! below some frequency vc , proportional to the strength of interaction. The DOS of the new...
متن کاملExcess Vibrational Modes and the Boson Peak in Model Glasses
The excess low-frequency normal modes for two widely used models of glasses are studied at zero temperature. The onset frequencies for the anomalous modes for both systems agree well with predictions of a variational argument, which is based on analyzing the vibrational energy originating from the excess contacts per particle over the minimum number needed for mechanical stability. Even though ...
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: Astronomy & Astrophysics
سال: 2002
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20020362