2005A&A...440.1161K


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.08CET01:29:04

2005A&A...440.1161K - Astronomy and Astrophysics, volume 440, 1161-1165 (2005/9-4)

Photometric observations from theoretical flip-flop models.

KORHONEN H. and ELSTNER D.

Abstract (from CDS):

Some active stars show a so-called flip-flop phenomenon in which the main spot activity periodically switches between two active longitudes that are 180° apart. In this paper we study the flip-flop phenomenon by converting results from dynamo calculations into long-term synthetic photometric observations, which are then compared to the real stellar observations. We show that similar activity patterns as obtained from flip-flop dynamo calculations, can also be seen in the observations. The long-term light-curve behaviour seen in the synthesised data can be used for finding new stars exhibiting the flip-flop phenomenon.

Abstract Copyright:

Journal keyword(s): magnetic fields - magnetohydrodynamics (MHD) - stars: late-type - starspots

Simbad objects: 8

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Number of rows : 8

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 HD 22468 RS* 03 36 47.2911034958 +00 35 15.938962144 7.09 6.63   5.4   K2:Vnk 1133 0
2 V* EI Eri RS* 04 09 40.8929265498 -07 53 34.177328732   7.71 7.04     G3V 270 0
3 * sig Gem RS* 07 43 18.7269793 +28 53 00.642191 6.38 5.41 4.29 3.37 2.79 K1IIIe 450 0
4 V* IL Hya RS* 09 24 49.0137313673 -23 49 34.713618005   8.38 7.37     K2IV/Vp 163 0
5 V* LQ Hya BY* 09 32 25.5684079124 -11 11 04.687410738 9.316 8.761 7.891 7.288 6.815 K1Vp 408 0
6 HD 82443 BY* 09 32 43.7594363452 +26 59 18.708212270   7.78   6.6   G9V(k) 224 1
7 V* FK Com Ro* 13 30 46.7993742986 +24 13 57.786184235   9.04 8.245   7.204 G4III 352 1
8 V* HK Lac RS* 22 04 56.6089126762 +47 14 04.482220545   8.01 6.96     K0III 232 0

    Equat.    Gal    SGal    Ecl

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2021.03.08-01:29:04

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