SPOT MODELING OF AB-DOR, 1980-1991

被引：16

作者：

ANDERS, GJ

COATES, DW

THOMPSON, K

机构：

来源：

PROCEEDINGS ASTRONOMICAL SOCIETY OF AUSTRALIA | 1992年 / 10卷 / 01期

关键词：

D O I：

10.1017/S1323358000019184

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Some results of spot modelling for 18 light curves of AB Dor are presented, covering the period 1980-1992. Using the technique of Budding and Zeilik (1987) to determine spot parameters, it is shown that photospheric spots on this star tend to form in one of two longitude belts separated by approximately 180 degrees. This can be compared to the similar active longitudes proposed by Zeilik et al. (1988,1989) for the RS CVn stars SV Cam and RT And. The change in overall light level of AB Dor over the past 12 years indicates the possibility of a solar-type spot cycle although more photometric observations will be needed to confirm this.

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页码：33 / 37

页数：5

相关论文

共 12 条

[1] LINEARIZED LIMB-DARKENING COEFFICIENTS FOR USE IN ANALYSIS OF ECLIPSING BINARY LIGHT CURVES [J].

ALNAIMIY, HM .

ASTROPHYSICS AND SPACE SCIENCE, 1978, 53 (01) :181-192

[2] RECENT OPTICAL PHOTOMETRY OF AB-DOR AND ITS INTERPRETATION [J].

BANKS, T ;

KILMARTIN, PM ;

BUDDING, E .

ASTROPHYSICS AND SPACE SCIENCE, 1991, 183 (02) :309-316

[3] AN ANALYSIS OF THE LIGHT CURVES OF SHORT-PERIOD RS CANUM VENATICORUM STARS - STARSPOTS AND FUNDAMENTAL PROPERTIES [J].

BUDDING, E ;

ZEILIK, M .

ASTROPHYSICAL JOURNAL, 1987, 319 (02) :827-835

[4]

COLLIER AC, 1982, MON NOT R ASTRON SOC, V200, P489

[5]

DODSON HW, 1972, SOLAR ACTIVITY OBSER

[6] STARSPOTS AS THE CAUSE OF THE INTRINSIC LIGHT VARIATIONS IN RS CANUM VENATICORUM TYPE STARS [J].

EATON, JA ;

HALL, DS .

ASTROPHYSICAL JOURNAL, 1979, 227 (03) :907-922

[7] OBSERVATIONS OF ACTIVE-CHROMOSPHERE STARS .2. PHOTOMETRY OF AB-DOR, 1978-1987 [J].

INNIS, JL ;

THOMPSON, K ;

COATES, DW ;

EVANS, TL .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1988, 235 (04) :1411-1422

[8]

INNIS JL, 1986, THESIS MONASH U

[9] A STUDY OF THE SPECTRUM AND MAGNETIC VARIABLE STAR HD-125248 [J].

STIBBS, DWN .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1950, 110 (04) :395-404

[10] DOPPLER IMAGING OF SPOTTED STARS - APPLICATION TO THE RS CANUM VENATICORUM STAR HR-1099 [J].

VOGT, SS ;

PENROD, GD .

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1983, 95 (571) :565-576