Photometric variability of the protoplanetary nebula LSIV-12°111

被引：12
|
作者：
Arkhipova, VP [1 ]
Ikonnikova, NP [1 ]
Noskova, RI [1 ]
Komissarova, GV [1 ]
机构：
[1] Moscow MV Lomonosov State Univ, Sternberg Astron Inst, Moscow 119991, Russia
来源：
ASTRONOMY LETTERS-A JOURNAL OF ASTRONOMY AND SPACE ASTROPHYSICS | 2002年 / 28卷 / 04期
基金：
俄罗斯基础研究基金会;
关键词：
protoplanetary objects; photometric observations; evolutionary status;
D O I：
10.1134/1.1467261
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present our photometric observations of an early B supergiant with an infrared excess, the protoplanetary object LSIV-12degrees111, and the previously suspected variable star NSV 24971. We confirm its photometric variability. During two observing seasons (2000-2001), the star exhibited rapid irregular light variations with amplitudes DeltaV similar to 0.(m)3, DeltaB similar to 0.(m)3, and DeltaU similar to 0.(m)4 and a time scale of similar to1(d). There is no correlation between the colors and magnitudes of the star. The variability patterns of LSIV- 12degrees111 and two other hot post-AGB stars, V886 Her and V 1853 Cyg, are shown to be similar. (C) 2002 MAIK ''Nauka/Interperiodica''.
引用
收藏
页码：257 / 260
页数：4
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