Ratio of Colour and Effective Temperatures in X-ray Burst Spectra

Details Ratio of Colour and Effective Temperatures in X-ray Burst Spectra Ratio of Colour and Effective Temperatures in X-ray Burst Spectra

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002hrxs.confe..23m&link_type=abstract

High Resolution X-ray Spectroscopy with XMM-Newton and Chandra, Proceedings of the international workshop held at the Mullard Sp

Computer Science

1

Scientific paper

We present model atmospheres and theoretical spectra for X-ray bursters. Our models include the effects of Compton scattering on free electrons. The atmospheres have compositions that are mixtures of hydrogen, helium, and iron. For our models the ratio of color temperature, Tc, to effective temperature, Teff, is in the range 1.2 - 1.8. This ratio depends on Teff, surface gravity, and iron abundance. For fixed Teff and surface gravity, models with non-zero iron abundance exhibit values of Tc/Teff that are slightly lower than pure hydrogen-helium models.

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