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  1. #work

    Abstract: Atmospheric metal features in the spectra of white dwarfs are regarded as anomalies, because any primordial metal in WDs would sink rapidly in short timescale as long as the stars are not hot enough. It is believed that this atmospheric pollution is mainly due to the accretion of the circumstellar matters, such as a debris disk inferred from their infrared excess in the spectra. To date, many samples of polluted WDs have been reported, and theories are put forward to explaining the detected results. This review summarises the developments both in theory and observation of this topic. A comparison of models and comments are also included as the last part of this article.

  2. #评与测

    标题是一个(疑似)型月梗。

    一个有趣的事实是,笔者事实上并不会写常规文体的作品评价,相比而言,他更喜欢直接开门打分然后逐条评价的报告式行文。不过很明显,这样的文章读起来并不有趣。所以这篇文章(和将来可能会有的一些文章)使用了平叙文体。本文前半段是剧评,后半段是人物评价。

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