Modeling CHANDRA low energy transmission grating spectrometer observations of classical Novae with PHOENIX

A. Petz, P. H. Hauschildt, J. U. Ness, Sumner Starrfield

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We use the PHOENIX code package to model the X-ray spectrum of Nova V4743 Sagittarii observed with the LETGS onboard the Chandra satellite on 19 March 2003. To analyze nova atmospheres and related systems with an underlying nuclear burning envelope at X-ray wavelengths, it was necessary to update the code with new microphysics. We demonstrate that the X-ray emission is dominated by thermal bremsstrahlung and that the hard X-rays are dominated by Fe and N absorption. Preliminary models are calculated assuming solar abundances. It is shown that the models can be used to determine element abundances in the nova ejecta by increasing the absorption in the shell.

Original languageEnglish (US)
Title of host publicationX-RAY DIAGNOSTICS OF ASTROPHYSICAL PLASMAS
Subtitle of host publicationTheory, Experiment, and Observation
Pages357-360
Number of pages4
DOIs
StatePublished - Jun 13 2005
EventX-RAY DIAGNOSTICS OF ASTROPHYSICAL PLASMAS: Theory, Experiment, and Observation - Cambridge, MA, United States
Duration: Nov 15 2004Nov 17 2004

Publication series

NameAIP Conference Proceedings
Volume774
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherX-RAY DIAGNOSTICS OF ASTROPHYSICAL PLASMAS: Theory, Experiment, and Observation
CountryUnited States
CityCambridge, MA
Period11/15/0411/17/04

Keywords

  • CHANDRA
  • Novae
  • Stellar atmospheres
  • V4743Sgr

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Petz, A., Hauschildt, P. H., Ness, J. U., & Starrfield, S. (2005). Modeling CHANDRA low energy transmission grating spectrometer observations of classical Novae with PHOENIX. In X-RAY DIAGNOSTICS OF ASTROPHYSICAL PLASMAS: Theory, Experiment, and Observation (pp. 357-360). (AIP Conference Proceedings; Vol. 774). https://doi.org/10.1063/1.1960952