SIMBAD references

2007ApJ...663..320F - Astrophys. J., 663, 320-341 (2007/July-1)

An analysis of the shapes of interstellar extinction curves. V. The IR-through-UV curve morphology.


Abstract (from CDS):

We study the IR-through-UV wavelength dependence of 328 Galactic interstellar extinction curves affecting normal, near-main-sequence B and late O stars. We derive the curves using a new technique that employs stellar atmosphere models in lieu of unreddened ``standard'' stars. Under ideal conditions, this technique is capable of virtually eliminating spectral mismatch errors in the curves. In general, it lends itself to a quantitative assessment of the errors and enables a rigorous testing of the significance of relationships between various curve parameters, regardless of whether their uncertainties are correlated. Analysis of the curves gives the following results: While the observed large sight line-to-sight line variations, and the lack of correlation among the various features of the curves, make it difficult to meaningfully characterize average extinction properties, they demonstrate that extinction curves respond sensitively to local conditions. Thus, each curve contains potentially unique information about the grains along its sight line.

Abstract Copyright:

Journal keyword(s): ISM: Dust, Extinction - Methods: Data Analysis

VizieR on-line data: <Available at CDS (J/ApJ/663/320): table1.dat table3.dat table4.dat refs.dat>

Simbad objects: 352

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