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A Small Magellanic Cloud UXOR star

机译:一个小麦哲伦云uxor star

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摘要

We present VLT/UVES spectra of an object in the Small Mag-ellanic Cloud that displays photometric UXOR behaviour. The spectra cover a period of 9 months. Based on its photometric variability and its minor infra-red excess this object has been proposed to be in its pre-main sequence phase, like the Galactic UXOR stars. The star provides therefore the first opportunity to spectroscopically measure pre-main sequence accretion events in an extra-galactic object at a tenth of the solar metallicity. The set of 8 spectra show strong variability in the hydrogen and metallic lines, but they do not seem to support an accretion scenario.
机译:我们在显示光度UXOR行为的小Mag-ellanic云中显示对象的VLT / UVES光谱。光谱覆盖9个月的时间。基于其光度变异性及其轻微的红外线过量,已经提出了该目的,以其预先序列阶段,如半乳液UXOR星。因此,星形提供了在太阳能金属性的第十位的额外半乳扁物体中光谱测量额外序列的第一个机会。该组8个光谱显示出氢气和金属线的强大变异性,但它们似乎并不支持增强场景。

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