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首页> 外文期刊>The Astrophysical journal >NEAR-INFRARED WATER LINES IN V838 MONOCEROTIS
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NEAR-INFRARED WATER LINES IN V838 MONOCEROTIS

机译：V838单核细菌的近红外水线

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摘要

V838 Monocerotis had an intriguing, nova-like outburst in 2002 January that has subsequently led to several studies of the object. It is now recognized that the outburst of V838 Mon and its evolution are different from those of a classical nova or other classes of well-known eruptive variables. V838 Mon, along with two other objects that have analogous properties, appears to make up a new class of eruptive variables. There are limited infrared studies of V838 Mon. Here we present near-infrared h-band (1.5-1.75 μm) spectra of V838 Mon from late 2002 to the end of 2004. The principal new result from our work is the detection of several rotation-vibration lines of water in the h-band spectra. The observed water lines have been modeled to first establish that they are indeed due to water. Subsequently the temperature and column densities of the absorbing material, from where the water absorption features originate, are derived. From our analysis, we find that the water features arise from a cool, ～750-900 K, region around V838 Mon that appears to be gradually cooling with time.
机译：V838 Monocerotis在2002年1月爆发了一次有趣的新星状爆发，随后对该物体进行了多次研究。现在已经认识到，V838 Mon的爆发及其演化与经典新星或其他类别的著名喷发变量不同。 V838 Mon和其他两个具有类似属性的对象一起构成了新的一类喷发变量。 V838 Mon的红外研究非常有限。在这里，我们展示了2002年底至2004年底V838 Mon的近红外h波段（1.5-1.75μm）光谱。我们工作的主要新结果是检测到h838中水的几个旋转振动线。带谱。已对观察到的水线进行建模以首先确定它们确实是由于水引起的。随后得出吸水特征源自的吸收材料的温度和柱密度。从我们的分析中，我们发现水特征来自V838 Mon附近大约750-900 K的凉爽区域，该区域似乎随着时间逐渐冷却。

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