Synthesis of Complex Organic Molecules in Soft X-ray Irradiated Ices

發佈於 分類: pps2019

We study the chemical evolution of H2O:CO:NH3 ice mixtures irradiated with soft X-rays, in the range 250−1250 eV. We identify many nitrogen-bearing molecules such as e.g., OCN−, NH+4 , HNCO, CH3CN, HCONH2, and NH2COCONH2. Several infrared features are compatible with glycine or its isomers. During the irradiation, we detected through mass spectroscopy many species desorbing […]

Accretion and photodesorption of CO ice as a function of the incident angle of deposition

發佈於 分類: pps2019

Non-thermal desorption processes of molecules present in inter- and circum-stellar ice mantles on dust grains, in particular ultraviolet (UV) photon-induced desorption, have gained impor- tance in recent years. These processes may account for the observed gas phase abundances of certain molecules like CO toward cold interstellar clouds. Ice mantle growth results from gas molecules impinging […]