来自爱丁堡-开普敦蓝天体巡天的三颗前激变变星观测
太阳与恒星天体物理
2015-05-13 v1
摘要
我们给出了三颗候选前激变双星EC 12477-1738、EC 13349-3237和EC 14329-1625的光变曲线和时间分辨光谱。我们确定EC 12477-1738的轨道周期为0.362天,从而证实了先前报道的值。EC 14329-1625的周期相似,P=0.350天。两个系统都包含一颗中温白矮星(T = 15000-20000 K)和一颗M3V型次星。第三颗前激变变星EC 13349-3237是三颗中最年轻的,具有一颗热白矮星(T ~ 35000 K),并且周期最长,P=0.469天。此外,它还是仍属罕见的前激变变星之一,具有相对早型的M1V型次星,该次星最终将演化成一颗位于周期空缺之上的激变变星。
引用
@article{arxiv.0908.1078,
title = {Observations of three pre-cataclysmic variables from the Edinburgh-Cape Blue Object Survey},
author = {C. Tappert and B. T. Gaensicke and M. Zorotovic and I. Toledo and J. Southworth and C. Papadaki and R. E. Mennickent},
journal= {arXiv preprint arXiv:0908.1078},
year = {2015}
}
备注
10 pages, 14 figures (most of them reduced in size and quality), A&A, accepted