SIMBAD references

2007AJ....133.2206H - Astron. J., 133, 2206-2208 (2007/May-0)

The sun-like activity of the solar twin 18 Scorpii.

HALL J.C., HENRY G.W. and LOCKWOOD G.W.

Abstract (from CDS):

We present the results of 10 yr of complementary spectroscopic and photometric observations of the solar twin 18 Scorpii. We show that over the course of its ∼7 yr chromospheric activity cycle, 18 Sco's brightness varies in the same manner as the Sun's and with a likely total brightness variation of 0.09%, similar to the 0.1% decadal variation in the total solar irradiance.

Abstract Copyright: ∼

Journal keyword(s): Stars: Activity - Sun: Activity

Simbad objects: 4

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