SPECKLE INTERFEROMETRY OF SN 1987A - FINAL MEASUREMENTS

被引：8
|
作者：
NULSEN, PEJ
WOOD, PR
GILLINGHAM, PR
BESSELL, MS
DOPITA, MA
MCCOWAGE, C
机构：
[1] AUSTRALIAN NATL UNIV,MT STROMLO & SIDING SPRING OBSERV,WESTON CREEK,ACT 2611,AUSTRALIA
[2] ANGLO AUSTRALIAN TELESCOPE,COONABARABRAN,NSW 2357,AUSTRALIA
来源：
ASTROPHYSICAL JOURNAL | 1990年 / 358卷 / 01期
关键词：
Interferometry; Stars: individual (SN 1987A); Stars: supernovae;
D O I：
10.1086/168982
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present further speckle interferometric measurements of the angular diameter of SN 1987A up to 573 days after explosion of the supernova. These measurements cover the epoch of dust formation in the supernova. Most measurements were made in the emission line of Hα. Further observations will not be possible due to the faintness of SN 1987A. Our results indicate a linear increase in the angular diameter at Hα with time, corresponding to a velocity of 2825 km s-1. We are not able to confirm or exclude the existence of asymmetry in the Hα image of the supernova.
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页码：266 / 267
页数：2
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