SURFACE UBVR-PHOTOMETRY OF THE BARRED GALAXY NGC-151

被引:0
|
作者
ESIPOV, VF
ZASOV, AV
POPRAVKO, GV
机构
来源
ASTRONOMICHESKII ZHURNAL | 1993年 / 70卷 / 01期
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中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Results of surface photometry are given for the inner part (D = 100'' almost-equal-to 24 kpc) of the barred spiral galaxy NGC 151, obtained by an image-tube device of the 2-m telescope at the Semaha Observatory (Azerbaijan). Surface brightness of the inner dick of the galaxy and its of bar falls down exponentially with linear length-scales alpha-1 = 1,32 kpc and 3,3 kpc respectively. A colour gradient DELTA(U - B) and DELTA(B - V) along the radius of the galaxy is found: from the <<red>> circumnuclear disk down to the <<blue>> inner ring. Positions of UBV-colours of the bar regions on the two-colour diagram differ noticeably from the normal colour sequence which may be explained by a suggection that new-born stars, while moving along their orbits, go away from the bar.
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页码:1 / 9
页数:9
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