2007AJ....133.2206H

Query : 2007AJ....133.2206H

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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Number of rows : 4
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 HD 141128 PM* 15 47 38.1005685000 -09 28 49.592772984   7.44 7.00     F3/5V 59 0
2 HD 143841 * 16 02 58.8479220240 -08 02 53.531330820   7.51 7.12     F3V 27 0
3 HD 144892 ** 16 08 27.2491130171 -10 06 08.422880987   8.89 8.52 7.56   F6V 87 0
4 * 18 Sco PM* 16 15 37.2702755653 -08 22 09.982125430   6.15 5.50     G2Va 671 0

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