809 datasets found

We present a detailed analysis of acetylene (C_2_H_2_) and its isotopologs in the orion IRc2, focusing on the determination of ^12^C/^13^C isotopic ratios using high-resolution...

Multiple photoionization is investigated for the 2p shell in the iron atom. Study of the single photoionization with subsequent radiative and Auger cascade includes all levels...

Accurate line lists for the carbon dimer, C_2_, are presented. These line lists cover rovibronic transitions between the eight lowest electronic states: X, A, B, B', a, b, c, d....

SiS has long been observed in the circumstellar medium of the carbon-rich star IRC+10216 CW Leo. Comprehensive and accurate rotation-vibrational line lists and partition...

A computed line list for hydrogen peroxide, H_2_^16^O_2_, applicable to temperatures up to T=1250K is presented. A semi-empirical high accuracy potential energy surface is...

This work presents the AYT2 line list: a comprehensive list of 115 million ^1^H_2_^32^S vibration-rotation transitions computed using an empirically adjusted potential energy...

Sulphur dioxide is well-known in the atmospheres of planets and satellites, where its presence is often associated with volcanism, and in circumstellar envelopes of young and...

Accurate rotational-vibrational line lists for two isotopologues of PN in their ground electronic states are computed. The line lists are produced using an empirical potential...

We have developed further the technique of time-dependent modelling of magnetohydrodynamic shock waves, with a view to interpreting the molecular line emission from outflow...

We investigate NLTE effects for magnesium and calcium in the atmospheres of late-type giant and supergiant stars. The aim of this paper is to provide a grid of NLTE/LTE...

IRAM 30m Observations toward eight protostellar outflow sources were taken in the 96-176GHz range. Transitions of CH_3_OH and CH_3_CHO were detected in seven of them. The...

Charge exchange (CX) has emerged in X-ray emission modeling as a significant process that must be considered in many astrophysical environments- particularly comets. Comets host...

X-ray burst model predictions of light curves and the final composition of the nuclear ashes are affected by uncertain nuclear masses. However, not all of these masses are...

The mid-infrared emission from galactic objects, including reflection nebulae, planetary nebulae, proto-planetary nebulae, molecular clouds, etc, as well as external galaxies,...

We report laboratory spectroscopy for the first time of the J=1-0 and J=2-1 lines of Na^35^Cl and Na^37^Cl in several vibrational states. The hyperfine structure has been...

We recently reported the first identification of rotational transitions of methyl formate (HCOOCH_3_) in the second torsionally excited state toward Orion Kleinmann-Low (KL),...

In order to obtain accurate terahertz center frequencies for SO and its isotopologues, we have studied the absorption spectrum of SO, ^34^SO, and ^33^SO up to 2.5THz using...

The cyclopropenyl cation (c-C_3_H_3_^+^) is the smallest aromatic hydrocarbon molecule and considered to be a pivotal intermediate in ion-molecule reactions in space. An...

We present a comprehensive photochemistry model for exploration of the chemical composition of terrestrial exoplanet atmospheres. The photochemistry model is designed from the...

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,...