Period-luminosity relation for classical cepheids. Estimating the intrinsic scatter

被引：0
|
作者：
Berdnikov, LN [1 ]
Dambis, AK [1 ]
Vozyakova, OV [1 ]
机构：
[1] Moscow MV Lomonosov State Univ, Sternberg Astron Inst, Moscow 119899, Russia
来源：
ASTROPHYSICS AND SPACE SCIENCE | 1997年 / 252卷 / 1-2期
关键词：
cepheids; PL relation;
D O I：
10.1023/A:1000850314001
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Published photoelectric and CCD photometric data for fundamental-mode Cepheids in the Large Magellanic Cloud are analyzed. The inferred scatter of the observed period-luminosity relation decreases with increasing quality of the light curves used. The observed scatter of the period-luminosity relations in the V and I-C bands is as low as 0(m).11 and 0(m).07, respectively, i.e., a factor of similar to 1.5 smaller than the lowest published estimates. This, in particular, suggests that the intrinsic scatter might be lower than previously believed.
引用
收藏
页码：473 / 477
页数：5
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