Long-lived, long-period radial velocity variations in Aldebaran: A planetary companion and stellar activity

13 May 2015 Hatzes A. P. Cochran W. D. Endl M. Guenther E. W. MacQueen P. Hartmann M. Zechmeister M. Han I. Lee B. -C. Walker G. A. H. Yang S. Larson A. M. Kim K. -M. Mkrtichian D. E. Doellinger M. Simon A. E. Girardi L.

We investigate the nature of the long-period radial velocity variations in Alpha Tau first reported over 20 years ago. We analyzed precise stellar radial velocity measurements for Alpha Tau spanning over 30 years... (read more)

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  • SOLAR AND STELLAR ASTROPHYSICS