论文标题
二进制系统的光学识别与VLT的二元系统毫秒J1045-4509
Optical identification of binary system millisecond pulsar J1045-4509 with the VLT
论文作者
论文摘要
我们分析了用非常大的望远镜获得的毫秒Pulsar \ J1045 \二进制伴侣的档案光学数据。在Pulsar位置发现了可能的光学对应物候选源位置与脉冲星坐标一致。它的幅度为$ v> 26.4 $，$ r = 25.7（2）$和$ i = 25.4（2）$。将数据与白矮人的进化模型进行比较。根据与Pulsar的距离仍然很差的距离，可以做出两种替代解释。 对于无线电正时视差距离，候选人可以是一个非常凉爽且古老的白色矮人，其氢气气氛和$ <3000 $ K的温度和$> 5 $ gyr的年龄。色散度量的距离表明年轻（$ \ sim $ 2 Gyr）和更热（$ \ sim $ 6000 K）白矮人，其气氛构成仍然未知。
We analyse archival optical data on the binary companion to the millisecond pulsar \j1045\ obtained with the Very Large Telescope. A possible optical counterpart candidate %source position coincides with the pulsar coordinates is found at the pulsar position. Its magnitudes are $V>26.4$, $R=25.7(2)$ and $I=25.4(2)$. The data are compared with white dwarf evolutionary models. Depending on still poorly known distance to the pulsar, two alternative interpretations are possible. For the radio timing parallax distance, the candidate can be a very cool and old white dwarf with the hydrogen atmosphere and the temperature of $< 3000$ K and the age of $> 5$ Gyr. The dispersion measure distance suggests a younger ($\sim$ 2 Gyr) and hotter ($\sim$ 6000 K) white dwarf, whose atmosphere composition remains unknown.
