We present Temperature Programmed Desorption (TPD) experiments of CO and N2 ices in pure, layered and mixed morphologies at various ice "thicknesses" and abundance ratios as well as simultaneously taken Reflection Absorption Infrared Spectra (RAIRS) of CO. A kinetic model has been developed to constrain the binding energies of CO and N2 in both pure and mixed environments and to derive the kinetics for desorption, mixing and segregation. For mixed ices N2 desorption occurs in a single step whereas for layered ices it proceeds in two steps, one corresponding to N2 desorption from a pure N2 ice environment and one corresponding to desorption from a mixed ice environment. The latter is dominant for astrophysically relevant ice "thicknesses". T...
In regions where stars form, variations in density and temperature can cause gas to freeze out onto ...
In regions where stars form, variations in density and temperature can cause gas to freeze out onto ...
Aims.Solid O2 has been proposed as a possible reservoir for molecular oxygen in dense clouds through...
We present Temperature Programmed Desorption (TPD) experiments of CO and N2 ices in pure, layered an...
We present Temperature Programmed Desorption (TPD) experiments of CO and N2 ices in pure, layered an...
We present Temperature Programmed Desorption (TPD) experiments of CO and N2 ices in pure, layered an...
We present Temperature Programmed Desorption (TPD) experiments of CO and N2 ices in pure, layered an...
We present Temperature Programmed Desorption (TPD) experiments of CO and N2 ices in pure, layered an...
We present Temperature Programmed Desorption (TPD) experiments of CO and N2 ices in pure, layered an...
Millimeter observations of pre- and protostellar cores show that the abundances of the gas-phase tra...
Millimeter observations of pre- and protostellar cores show that the abundances of the gas-phase tra...
Millimeter observations of pre- and protostellar cores show that the abundances of the gas-phase tra...
Millimeter observations show that abundances of gaseous molecular tracers CO and N2H+ anti-correlate...
Aims. Solid O2 has been proposed as a possible reservoir for molecular oxygen in dense clouds throug...
Solid O2 has been proposed as a possible reservoir for molecular oxygen in dense clouds through free...
In regions where stars form, variations in density and temperature can cause gas to freeze out onto ...
In regions where stars form, variations in density and temperature can cause gas to freeze out onto ...
Aims.Solid O2 has been proposed as a possible reservoir for molecular oxygen in dense clouds through...
We present Temperature Programmed Desorption (TPD) experiments of CO and N2 ices in pure, layered an...
We present Temperature Programmed Desorption (TPD) experiments of CO and N2 ices in pure, layered an...
We present Temperature Programmed Desorption (TPD) experiments of CO and N2 ices in pure, layered an...
We present Temperature Programmed Desorption (TPD) experiments of CO and N2 ices in pure, layered an...
We present Temperature Programmed Desorption (TPD) experiments of CO and N2 ices in pure, layered an...
We present Temperature Programmed Desorption (TPD) experiments of CO and N2 ices in pure, layered an...
Millimeter observations of pre- and protostellar cores show that the abundances of the gas-phase tra...
Millimeter observations of pre- and protostellar cores show that the abundances of the gas-phase tra...
Millimeter observations of pre- and protostellar cores show that the abundances of the gas-phase tra...
Millimeter observations show that abundances of gaseous molecular tracers CO and N2H+ anti-correlate...
Aims. Solid O2 has been proposed as a possible reservoir for molecular oxygen in dense clouds throug...
Solid O2 has been proposed as a possible reservoir for molecular oxygen in dense clouds through free...
In regions where stars form, variations in density and temperature can cause gas to freeze out onto ...
In regions where stars form, variations in density and temperature can cause gas to freeze out onto ...
Aims.Solid O2 has been proposed as a possible reservoir for molecular oxygen in dense clouds through...