2000A&A...364..179F


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.21CEST15:46:16

2000A&A...364..179F - Astronomy and Astrophysics, volume 364, 179-190 (2000/12-1)

Spots and plages on a young main-sequence solar-type star: HD 206860.

FRASCA A., FREIRE FERRERO R., MARILLI E. and CATALANO S.

Abstract (from CDS):

The young solar type star HD 206860 is known to be a photometric variable with emission in the core of Ca II H & K lines, several times more intense than the Sun when observed as a star. The photometric and spectroscopic monitoring of HD 206860 from near contemporaneous observations at Serra La Nave (Catania, Italy) and at the Observatoire de Haute Provence (OHP, France) shows that chromospheric spectral-line flux and photometric variations follow the same period (4.74 days). From Stroemgren photometry and Ca II and Hα chromospheric emission clearly anti-correlated variations have been found. This result suggests that spots and plages in this single solar-type star are spatially associated, as frequently observed for the largest sun-spot groups and for some very active RS CVn systems. A spot/plage model applied to the observed flux curves allows a crude reconstruction of the 3D structure of the external atmosphere of this star.

Abstract Copyright:

Journal keyword(s): stars: activity - stars: individual: HD 206860

Simbad objects: 14

goto View the reference in ADS

Number of rows : 14

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 V* BI Cet RS* 01 22 50.2949927400 +00 42 43.395335335   9.01 8.162 7.8 7.302 G5V 105 0
2 V* UX Ari RS* 03 26 35.3764089427 +28 42 54.211100955 7.76 7.28 6.37     K0IV 665 0
3 HD 22468 RS* 03 36 47.2911034958 +00 35 15.938962144 7.09 6.63   5.4   K2:Vnk 1125 0
4 * 10 Tau PM* 03 36 52.1448022536 +00 23 58.536917738 5.23 5.15 4.30 4.09 3.77 F9IV-V 525 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 403 0
6 * bet CVn ** 12 33 44.5448195 +41 21 26.924857 4.91 4.86 4.25 3.73 3.42 G0V 543 0
7 * sig CrB RS* 16 14 40.85557 +33 51 30.9497           F6V+G0V 476 0
8 * alf Cep PM* 21 18 34.77233 +62 35 08.0681 2.770 2.680 2.460 2.22 2.11 A8Vn 341 0
9 * 5 Peg PM* 21 37 45.4300545651 +19 19 06.984131703   5.753 5.448     F1IV 74 0
10 * 9 Peg V* 21 44 30.6958139 +17 21 00.057062 6.48 5.52 4.35 3.53 2.98 G5Ib 259 0
11 V* HN Peg BY* 21 44 31.3299733695 +14 46 18.982331039       6.16   G0V+ 453 0
12 V* V372 Peg gD* 21 47 04.7603284954 +17 11 38.540792675   6.507 6.174     F3V 56 0
13 HD 208108 * 21 53 37.3847937018 +19 40 06.468863594   5.693 5.676     A0Vs 59 0
14 * 17 Peg * 21 56 56.3718356353 +12 04 35.360406966   5.580 5.533     A2Vnn 37 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2000A&A...364..179F and select 'bookmark this link' or equivalent in the popup menu


2020.10.21-15:46:16

© Université de Strasbourg/CNRS

    • Contact