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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents



ID: 693414.0, MPI für Astronomie / Publikationen_mpia
Predicting Stellar Angular Sizes
Authors:von Braun, K.; Boyajian, T. S.; van Belle, G. T.
Publisher:EDP Sciences
Date of Publication (YYYY-MM-DD):2013
Title of Proceedings:Setting a New Standard in the Analysis of Binary Stars
Start Page:429
End Page:430
Volume (in Series):64
Name of Conference/Meeting:Setting a New Standard in the Analysis of Binary Stars
Audience:Not Specified
Abstract / Description:Our survey of long-baseline infrared and optical interferometry measurements is producing considerable numbers of directly determined stellar angular sizes. We use our sample of 124 high-precision (5%) angular stellar diameter values and correlate them with stellar magnitude values from the literature to produce empirical relations for main-sequence stars between observed apparent magnitudes, stellar colors, and angular sizes (surface brightness relations). We find a significant dependence on stellar metallicity for (B - V) colors. The scatter in the calculated relations is small (˜5%), which makes them a robust tool for the prediction of main-sequence stellar angular sizes based on photometry. We apply these relations via the calculation of the radius of the multiplanet host star GJ 667 C.
Comment of the Author/Creator:Date: 2013, February 1, 2013
External Publication Status:published
Document Type:Conference-Paper
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:URL:http://cdsads.u-strasbg.fr/abs/2013EAS....64..429V
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