XMM–Newton study of the supersoft symbiotic system Draco C1

XMM–Newton study of the supersoft symbiotic system Draco C1
复制标题

XMMâNewton 对超软共生系统 Draco C1 的研究

DOI:
10.1093/mnras/stx2354
复制
发表时间:
2018
影响因子:
4.8
通讯作者:
Sasaki
Sasaki
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Saeedi;Sasaki

文献摘要

参考文献

被引文献

相似文献

本文给出了位于天龙座矮球状星系中的共生星星天龙座C1的31个XMM-牛顿观测结果的分析结果。根据ROSAT数据,该物体已被确定为超软源。我们分析了X射线、紫外线和光学数据,以获得系统的物理参数和几何形状。我们还对天龙座C1进行了首次X射线时序分析。X射线谱符合黑体模型,温度为(1.8 ± 0.3)× 105 K。我们得到了这颗白色矮星的辐射热光度为1038 erg s− 1。X射线光谱和光度表明白色矮星表面存在稳定的核燃烧。来自X射线光谱的低柱密度与以前的紫外线研究中发现的星云线的缺乏是一致的。在光学和紫外线的长期变化表明,该系统是没有观察到的正面和可变性是由反射效应。对于红巨星伴星,假设洛希瓣溢出,我们估计它的半径为110 R,质量上限为1.5 M。
We present the results of the analysis of thirty-oneXMM–Newtonobservations of the symbiotic star Draco C1 located in the Draco dwarf spheroidal galaxy. This object had been identified as a supersoft source based onROSATdata. We analysed X-ray, ultraviolet (UV) and optical data taken withXMM–Newtonin order to obtain the physical parameters and the geometry of the system. We have also performed the first X-ray timing analysis of Draco C1. The X-ray spectrum is well fitted with a blackbody model with a temperature of (1.8 ± 0.3) × 105K. We obtained a bolometric luminosity of ≳1038erg s−1for the white dwarf. The X-ray spectrum and luminosity suggest stable nuclear burning on the surface of the white dwarf. The low column density derived from the X-ray spectrum is consistent with the lack of nebular lines found in previous UV studies. The long-term variability in the optical and the UV suggests that the system is not observed face-on and that the variability is caused by the reflection effect. For the red giant companion, we estimate a radius of ∼110 R⊙and an upper limit ≲1.5 M⊙for its mass assuming Roche lobe overflow.
红外光度测量和银河晕中矮球体的比较恒星含量。
DOI: --
发表时间: 1985
期刊:
影响因子: --
作者:
M. Aaronson;J. Mould
通讯作者: J. Mould
AG Draconis 用 XMM-Newton 观察
DOI: --
发表时间: 2008
期刊:
影响因子: --
作者:
R. González;R. Viotti;T. Iijima;C. Rossi;F. Montagni;S. Bernabei;A. Frasca;A. Skopal
通讯作者: A. Skopal
两颗 SMC 共生星正在进行稳定的氢燃烧
DOI: --
发表时间: 2007
期刊:
影响因子: --
作者:
M. Orio;A. Zezas;U. Munari;A. Siviero;E. Tepedelenlioglu
通讯作者: E. Tepedelenlioglu
需要进行高速撞击实验来增进我们对小行星的了解
DOI: --
发表时间: 1982
期刊:
影响因子: --
作者:
P. Paolicchi;P. Farinella;V. Zappalá
通讯作者: V. Zappalá
超软 X 射线源:基本参数
DOI: --
发表时间: 2003
期刊:
影响因子: --
作者:
V. Suleimanov;A. Ibragimov
通讯作者: A. Ibragimov