Modeling Spectral Variations of Dusty Circumstellar Envelopes During Microlensing Events

Details Modeling Spectral Variations of Dusty Circumstellar Envelopes During Microlensing Events Modeling Spectral Variations of Dusty Circumstellar Envelopes During Microlensing Events

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...211.5905b&link_type=abstract

American Astronomical Society, AAS Meeting #211, #59.05; Bulletin of the American Astronomical Society, Vol. 39, p.841

Astronomy and Astrophysics

Astrophysics

Scientific paper

Microlensing surveys have proven to be tremendously fruitful in providing valuable data products for many fields of astrophysics, from eclipse lightcurves for substellar candidates to limb darkening in stellar atmospheres. We report on a program of modeling observables from microlensing of circumstellar envelopes, particularly those of red giant stars that are the most likely to show finite source effects. Recent modeling results for the time dependent spectral energy distributions from microlensing of dusty winds are presented. In effect, wavelength-dependent continuum variations that occur as the lens-star separation changes can provide information about the emissivity distribution of dust in the wind. This project was funded by a partnership between the National Science Foundation (NSF AST-0552798), Research Experiences for Undergraduates (REU), and the Department of Defense (DoD) ASSURE (Awards to Stimulate and Support Undergraduate Research Experiences) programs.

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