Viti, S.;
Collings, M.P.;
Dever, J.W.;
McCoustra, M.R.S.;
Williams, D.A.;
(2004)
Evaporation of ices near massive stars: models based on laboratory temperature programmed desorption data.
Monthly Notices of the Royal Astronomical Society
, 354
(4)
pp. 1141-1145.
10.1111/j.1365-2966.2004.08273.x.
![[thumbnail of 10144.pdf]](https://discovery.ucl.ac.uk/style/images/fileicons/application_pdf.png) Preview |
PDF
10144.pdf Download (140kB) |
Abstract
in the chemistry of the ices deposited during that collapse. In this paper, we present results from a new model of the chemistry near high-mass stars in which the desorption of each species in the ice mixture is described as indicated by new experimental results obtained under conditions similar to those in hot cores. Our models show that provided there is a monotonic increase in the temperature of the gas and dust surrounding the protostar, the changes in the chemical evolution of each species due to differential desorption are important. The species H2S, SO, SO2, OCS, H2CS, CS, NS, CH3OH, HCOOCH3, CH2CO, C2H5OH show a strong time dependence that may be a useful signature of time evolution in the warm-up phase as the star moves on to the main sequence. This preliminary study demonstrates the consequences of incorporating reliable temperature programmed desorption data into chemical models.
| Type: | Article |
|---|---|
| Title: | Evaporation of ices near massive stars: models based on laboratory temperature programmed desorption data |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1111/j.1365-2966.2004.08273.x |
| Publisher version: | http://dx.doi.org/10.1111/j.1365-2966.2004.08273.x |
| Language: | English |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10144 |
Loading...
Loading...Loading...Loading...Archive Staff Only
 |
View Item |
