Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...320..237r&link_type=abstract
Astronomy and Astrophysics, v.320, p.237-248
Astronomy and Astrophysics
Astrophysics
54
Stars: Atmospheres, Stars: Early-Type, Stars: General Stars: Fundamental Parameters
Scientific paper
We present an investigation about the influence of "light metals", i.e.lithium through calcium (elements 3-20), on structure and emergent fluxes of NLTE model atmospheres for hot compact stars (spectral type O with T_eff_>40kK). In contrast to models which are composed only of H, He, C, N, and O, the models which include light metals have a strongly reduced EUV and X-ray flux. Thus, for the calculation of realistic fluxes in these wavelength bands, the inclusion of light metal opacities is indispensable. The H#2 and He#2 line profiles in the optical wavelength range, which are commonly used for the determination of photospheric parameters like effective temperature, surface gravity, and He/H abundance ratio, are affected only marginally and only within their line cores. However, in the case of high resolution, high S/N spectra, these effects are detectable and thus, the light metals can not be neglected.
No associations
LandOfFree
Implication of light metals (Li-Ca) on NLTE model atmospheres of compact hot stars. does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Implication of light metals (Li-Ca) on NLTE model atmospheres of compact hot stars., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Implication of light metals (Li-Ca) on NLTE model atmospheres of compact hot stars. will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1315533