arXiv 1007.15332010-07-09astro-ph.CO

团簇中心半导体周围丝状CO发射区的分子示踪

Molecular Tracers of Filamentary CO Emission Regions Surrounding the Central Galaxies of Clusters

E. Bayet, T. W. Hartquist, S. Viti, D. A. Williams, T. A. Bell

备注：: 11 pages, 3 figures, 3 tables, accepted in A&A
DOI：: 10.1051/0004-6361/200913185

摘要：

光辐射是从星系团的中心星系周围的细丝中探测到的。这些细丝有几十千秒差距的长度。这种发射可能是由于机械能的耗散和宇宙射线引起的电离所引起的加热。在英仙座星系团中央星系NGC~1275周围的暗条中，观测到了CO的毫米和亚毫米谱线辐射以及H $_{2}$红外辐射。我们的目标是确定这些分子物种，CO以外，可能会发出可检测的毫米和亚毫米线的功能，在这些灯丝中产生的，并确定这些物种将产生的排放，可能作为诊断的耗散和宇宙射线引起的电离。时间依赖的UCL光子主导区域建模代码被用于在适当的压力下，在一个范围内的耗散和宇宙射线诱导的电离率和入射辐射fields.HCO $^+$和C $_2$ H排放的分子的阴极发射区的稳态模型的建设将潜在地提供有关宇宙射线诱导的电离率在灯丝。HCN，特别是CN，是具有毫米和亚毫米线的物质，在含有分子的最温暖的区域中仍然大量存在。HCO $^{+}$、C $_{2}$ H和CN辐射中星系团细丝的探测，以及HCN辐射中星系团细丝的进一步探测，将对耗散和宇宙射线诱导电离率提供重要的限制。

英文摘要：

Optical emission is detected from filaments around the central galaxies of clusters of galaxies. These filaments have lengths of tens of kiloparsecs. The emission is possibly due to heating caused by the dissipation of mechanical energy and by cosmic ray induced ionisation. CO millimeter and submillimeter line emissions as well as H$_{2}$ infrared emission originating in such filaments surrounding NGC~1275, the central galaxy of the Perseus cluster, have been detected. Our aim is to identify those molecular species, other than CO, that may emit detectable millimeter and submillimeter line features arising in these filaments, and to determine which of those species will produce emissions that might serve as diagnostics of the dissipation and cosmic ray induced ionisation. The time-dependent UCL photon-dominated region modelling code was used in the construction of steady-state models of molecular filamentary emission regions at appropriate pressures, for a range of dissipation and cosmic ray induced ionisation rates and incident radiation fields.HCO$^+$ and C$_2$H emissions will potentially provide information about the cosmic ray induced ionisation rates in the filaments. HCN and, in particular, CN are species with millimeter and submillimeter lines that remain abundant in the warmest regions containing molecules. Detections of the galaxy cluster filaments in HCO$^{+}$, C$_{2}$H, and CN emissions and further detections of them in HCN emissions would provide significant constraints on the dissipation and cosmic ray induced ionisation rates.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

摘要：

英文摘要：

相关论文