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The ages of a-stars. I. Interferometric observations and age estimates for stars in the ursa major moving group

Jones, Jeremy; White, Russel J; Boyajian, Tabetha; Schaefer, G H; Baines, Ellyn K; Patience, J; ten Brummelaar, T; McAlister, H; Ridgway, Stephen T; Sturmann, J; Ireland, Michael


We have observed and spatially resolved a set of seven A-type stars in the nearby Ursa Major moving group with the Classic, CLIMB, and PAVO beam combiners on the Center for High Angular Resolution Astronomy Array. At least four of these stars have large rotational velocities (v sin i ≳ 170 km s-1) and are expected to be oblate. These interferometric measurements, the stars observed photometric energy distributions, and v sin i values are used to computationally construct model oblate stars from...[Show more]

CollectionsANU Research Publications
Date published: 2015
Type: Journal article
Source: The Astrophysical Journal
DOI: 10.1088/0004-637X/813/1/58
Access Rights: Open Access


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