MAP-BASED TRIGONOMETRIC PARALLAXES OF OPEN CLUSTERS - THE PRAESEPE

被引：16
|
作者：
GATEWOOD, G
DEJONGE, JK
机构：
[1] University of Pittsburgh, Allegheny Observatory, Observatory Station, Pittsburgh
来源：
ASTROPHYSICAL JOURNAL | 1994年 / 428卷 / 01期
关键词：
ASTROMETRY; OPEN CLUSTERS AND ASSOCIATIONS; INDIVIDUAL; (PRAESEPE);
D O I：
10.1086/174229
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Trigonometric parallaxes for stars in the Praesepe open star cluster are deduced from data collected with the Multichannel Astrometric Photometer (MAP) at the Thaw Refractor of the University of Pittsburgh's Allegheny Observatory. The weighted mean parallax of five cluster members is + 5.21 +/- 0.79 mas (0.00079''), corresponding to a distance modulus of 6.42 +/- 0.33 mag. We briefly compare this result with that derived earlier for the Hyades and note agreement with the distance found by main-sequence fitting. We also discuss briefly an improvement in the weighting scheme of the centroiding algorithm used in this series.
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收藏
页码：166 / 169
页数：4
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