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首页> 外文会议>Symposium of the International Astronomical Union;International Astronomical Union., Symposium >A Masing BAaDE's Window Thousands of SiO Masers in Thousands of AGB Stars in the Galaxy
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A Masing BAaDE's Window Thousands of SiO Masers in Thousands of AGB Stars in the Galaxy

机译：一名贴身的Baade的窗口数千个SiO玩具在Galaxy成千上万的AgB星星

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We report on the Bulge Asymmetries and Dynamic Evolution (BAaDE) survey which has observed 19 000 MSX color selected red giant stars for SiO maser emission at 43 GHz with the VLA and is in the process of observing 9 000 of these stars with ALMA at 86 GHz in the Southern sky. Our setup covers the main maser transitions, as well as those of isotopologues and selected lines of carbon-bearing species. Observations of this set of lines allow a far-reaching catalog of line-of-sight velocities in the dust-obscured regions where optical surveys cannot reach. Our preliminary detection rate is close to 70%, predicting a wealth of new information on the distribution of metal rich stars, their kinematics as function of location in the Galaxy, as well as the occurrence of lines and line ratios between the different transitions in combination with the spectral energy distribution from about 1 to 100 μm. Similar to the OH/IR stars, a clear kinematic signature between disk and bulge stars can be seen. Furthermore, the SiO J = 1 → 0 (v=3) line plays a prominent role in the derived maser properties.
机译：我们报告了凸起的不对称和动态演进（BAADE）调查，该调查已经观察到了19 000 MSX颜色选择的红色巨星，以43 GHz与VLA为43 GHz，并且在86岁的Alma中观察了9 000个这些星星的过程在南部的天空中的GHz。我们的设置涵盖了主要的蒙皮过渡，以及同位素和选定的碳含量线。这组线的观察允许光学调查无法达到的灰尘遮挡区域中视线速度的远程视线目录。我们的初步检测率接近70％，预测了关于金属富恒星的分布的丰富新信息，作为星系中的位置的位置，以及组合不同过渡之间的线条和线比的发生光谱能量分布为约1至100μm。类似于OH / IR星，可以看到磁盘和凸起星之间的明确运动签名。此外，SIO J = 1→0（v = 3）行在派生的MASER属性中起着突出的作用。

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