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SiO maser astrometry of the red transient V838 Monocerotis ?

机译:红色瞬态V838 Monocerotis <相关对象对象类型=“Tablecds”source-id =“http:// cdsarc .u-strasbg.fr / viz-bin / cat / j / a + a / 638 / a17“source-id-type =”url“/>

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We present multiepoch observations with the Very Long Baseline Array of SiO maser emission in the v ?=?1, J ?=?1?0 transition at 43 GHz from the remnant of the red nova V838 Mon. We modeled the positions of maser spots to derive a parallax of 0.166?±?0.060 mas. Combining this parallax with other distance information results in a distance of 5.6?±?0.5 kpc, which is in agreement with an independent geometric distance of 6.1?±?0.6 kpc from modeling polarimetry images of V838 Mon’s light echo. Combining these results, and including a weakly constraining Gaia parallax, yields a best estimate of distance of 5.9?±?0.4 kpc. The maser spots are located close to the peaks of continuum at ~225 GHz and SiO J ??=??5?4 thermal emission detected with the Atacama Large (sub)Millimeter Array. The proper motion of V838 Mon confirms its membership in a small open cluster in the Outer spiral arm of the Milky Way.
机译:我们用V?= 1,j?= 1,j?1?0从红星V838周一的遗留下的43 GHz的长期基线阵列提出了Multiepoch观察。我们建模了Maser斑点的位置,从而导出了0.166的视差为0.166?±0.060 mas。将该视差与其他距离信息相结合,导致5.6°的距离为5.6?±0.5 kPc,这与独立的几何距离为6.1?±0.6kPc,从v838 mon的光回声的建模偏振图像。结合这些结果,并包括弱约束的Gaia视差,产生5.9°°±0.4kpc距离的最佳估计。蒙皮斑位于〜225 GHz和SiO J的连续峰靠近〜225的峰值,与Atacama大(Sub)毫米阵列检测到5?4热排放。 V838 Mon的适当议案确认其在银河系外螺旋臂中的一个小开放簇中的成员资格。

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