作者: J. Lehtinen , L. Jetsu , T. Hackman , P. Kajatkari , G. W. Henry
DOI: 10.1051/0004-6361/201527420
关键词: Stars 、 Effective temperature 、 Stellar classification 、 Longitude 、 Rotation period 、 Astrophysics 、 K-type main-sequence star 、 Physics 、 Differential rotation 、 Photometry (optics) 、 Astronomy
摘要: … We found both a well-defined 8.0 yr activity cycle and active longitudes on HD 1405. As … We found evidence of a 10.9 yr activity cycle in the photometry. There is an apparent …