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arXiv 1010.4479astro-ph.SR
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银河系行星状星云的射电连续谱探测I。在大规模无线电勘测中探测到的MASH PNe

Radio-continuum detections of Galactic Planetary Nebulae I. MASH PNe detected in large-scale radio surveys

I. S. Bojicic, Q. A. Parker, M. D. Filipovic, D. J. Frew

摘要:

我们提出了一个更新的和新编译的无线电连续数据库MASH PNe检测在现有的大规模“盲”无线电连续调查(NVSS,SUMSS/MGPS-2和PMN),并为少数的MASH PNe,观察到和检测到有针对性的无线电连续观测。我们找到了大约250个MASH PNE的无线电对应物。在与以前已知的银河系PNe的百分比在NVSS和MGPS-2无线电连续调查中检测到,并根据其位置的通量密度角直径和无线电亮度温度演化图,我们得出结论,毫不奇怪,MASH样本提出了无线电微弱的结束已知的银河系PNe人口。此外,我们提出了一个小的子样本的MASH PNe位于-30arcdeg和-40arcdeg之间的地带,在NVSS和MGPS-2无线电调查中检测到的无线电连续谱特性。

英文摘要:

We present an updated and newly compiled radio-continuum data-base for MASH PNe detected in the extant large scale "blind" radio-continuum surveys (NVSS, SUMSS/MGPS-2 and PMN) and, for a small number of MASH PNe, observed and detected in targeted radio-continuum observations. We found radio counterparts for approximately 250 MASH PNe. In comparison with the percentage of previously known Galactic PNe detected in the NVSS and MGPS-2 radio-continuum surveys and according to their position on the flux density-angular diameter and the radio brightness temperature evolutionary diagrams we conclude, unsurprisingly, that the MASH sample presents the radio-faint end of the known Galactic PNe population. Also, we present radio-continuum spectral properties of a small sub-sample of MASH PNe located in the strip between declinations -30arcdeg and -40arcdeg, that are detected in both the NVSS and MGPS-2 radio surveys.

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