First Results from the CHARA Array. I. An Interferometric and Spectroscopic Study of the Fast Rotator α Leonis (Regulus)
The Astrophysical Journal2005Vol. 628(1), pp. 439–452
Citations Over TimeTop 10% of 2005 papers
Harold A. McAlister, Theo A. ten Brummelaar, Douglas R. Gies, W. Huang, W. G. Bagnuolo, M. A. Shure, J. Sturmann, L. Sturmann, N. H. Turner, Stuart F. Taylor, David H. Berger, Ellyn K. Baines, Erika D. Grundstrom, Chad Ogden, Stephen T. Ridgway, Gerald van Belle
Abstract
We report on K-band interferometric observations of the bright, rapidly rotating star Regulus (type B7 V) made with the CHARA Array on Mount Wilson, California. Through a combination of interferometric and spectroscopic measurements, we have determined for Regulus the equatorial and polar diameters and temperatures, the rotational velocity and period, the inclination and position angle of the spin axis, and the gravity darkening coefficient. These first results from the CHARA Array provide the first interferometric measurement of gravity darkening in a rapidly rotating star and represent the first detection of gravity darkening in a star that is not a member of an eclipsing binary system.
Related Papers
- → Molecular interferometry experiments(1994)91 cited
- → Development of a laser synthetic wavelength interferometer for large displacement measurement with nanometer accuracy(2010)30 cited
- → High-Resolution Temperature Measurement Using Phase-Compensating Interferometer and Frequency-Monitoring Interferometer(1994)5 cited
- → Research on an optical fiber low-coherence interferometric sensing system with dual-interferometry(2012)1 cited
- Susquehanna Chorale Spring Concert "Roots and Wings"(2017)