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An analysis of dust halo and extinction toward x persei
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Valencic, Lynne A. Smith, Randall K. |
| Copyright Year | 2007 |
| Description | Interstellar dust grain models are not sufficiently constrained by UV extinction curves to be able to distinguish between them. By testing grain models in the X-ray regime and applying elemental abundance constraints, we show to what extent the models can reproduce the observables in these regimes, and if they are capable of doing so while respecting the abundance limits. We tested the MRN and WD grain models. The fits to the X-ray data do not allow us to distinguish between MRN and WD; both models provide reasonable fits, but cannot do so while respecting the elemental abundance constraints. The situation in the UV regime is similar. Both MRN and WD underestimate the hydrogen column density NH. The model of ZDA provides promising results, as it finds NH much closer to the UV-measured value; further testing of this model is called for. |
| File Size | 1136170 |
| Page Count | 31 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20070035979 |
| Archival Resource Key | ark:/13960/t9m37sr5b |
| Language | English |
| Publisher Date | 2007-01-01 |
| Access Restriction | Open |
| Subject Keyword | Astronomy Grain Size O Stars X Rays Halos Cosmic Dust Extinction Data Processing Abundance Stellar Models Interstellar Matter Xmm-newton Telescope Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
