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Center for Astrophysics Research and Technologies Seminar Series Information


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A Statistical Approach to Distance Calculations for BAaDE Sources

Thursday November 18, 2021
2:00 pm

 Presenter:  Brandon Medina (UNM)
 Series:  Center for Astrophysics Research and Technologies Seminar Series
 Abstract:  The Bulge Asymmetries and Dynamical Evolution (BAaDE) survey is the largest ever SiO maser survey of 28,062 infrared-selected selected evolved stars throughout the Galactic plane. We have generated an IR catalog from 0.79 microns to 70 microns by cross-matching the BAaDE sources with nine different surveys. With this, spectral energy distributions (SEDs) can be formed for our objects. Using this IR catalog and the resulting SEDs, we are attempting to estimate distances to the sources as well as infer properties of the stellar objects and their circumstellar envelopes. The method used to extract these properties is by modeling SEDs of the sources. By generating SED templates, which we can match to sources of known distances, we can subsequently estimate distances to the full set of BAaDE sources. To effectively use this method, an in-depth study of interstellar extinction in the Galactic plane is necessary and we are attempting to map the extinction.
 Host:  Ylva Pihlstrom
 Location:  PAIS-3205, PAIS

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