Verification of H2 emission candidates from GLIMPSE360 - Preparatory PANIC narrow-band imaging using the Calar Alto 2.2-m telescope

使用 Calar Alto 2.2 米望远镜验证 GLIMPSE360 的 H2 发射候选者 - 预备性 PANIC 窄带成像

• 批准号: 315506909
• 负责人: Dr. Bringfried Stecklum
• 金额: --
• 依托单位: Thüringer Landessternwarte Tautenburg (TLS) - Karl-Schwarzschild-Observatorium
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/315506909?language=en
• 关键词: Verification; H2; emission; candidates; GLIMPSE360

The GLIMPSE survey of the inner Galaxy revealed many objects with 4.5 micron excess due to emission from molecular hydrogen (H2). These comprise YSO outflows, (proto-)planetary nebulae, HII regions, and SN remnants. The follow-up GLIMPSE360 survey, a SPITZER warm mission, yielded a full coverage of the Galactic plane, but just in the 3.6 and 4.5 micron bands. Although a large [3.6 - 4.5] color may hint at emission from H2, it could be also caused by a very red continuum. This shall be distinguished by ground-based follow-up imaging in the H2 1-0 S(1) line using PANIC. Before attempting this large observational effort, we applied at the Calar Alto observatory to conduct a feasibility study first. This observing application was accepted with a very good grade (A). In order to cover the travel expenses for the observing run, the present proposal asks for funding from the Deutsche Forschungsgemeinschaft.

对银河系内部的 GLIMPSE 巡天发现，由于氢分子 (H2) 的排放，许多物体的直径超过了 4.5 微米。这些包括 YSO 流出物、（原）行星状星云、HII 区域和 SN 遗迹。后续的 GLIMPSE360 巡天是 SPITZER 的一项热任务，对银河平面进行了全面覆盖，但仅限于 3.6 和 4.5 微米波段。虽然大的 [3.6 - 4.5] 颜色可能暗示来自 H2 的发射，但它也可能是由非常红色的连续体引起的。这应通过使用 PANIC 在 H2 1-0 S(1) 线中进行地面后续成像来区分。在尝试这项大型观测工作之前，我们首先向卡拉阿尔托天文台申请进行可行性研究。该观察申请被接受，并获得了非常好的等级（A）。为了支付观察运行的旅费，目前的提案要求德国研究协会提供资金。

项目成果

Disk-mediated accretion burst in a high-mass young stellar object

高质量年轻恒星中盘介导的吸积爆发

• DOI: 10.1038/nphys3942
• 发表时间: 2016-11-14
• 期刊: Nature Physics
• 影响因子: 19.6
• 作者: A. C. O. Garatti;B. Stecklum;R. G. Lopez;J. Eisloffel;T. Ray;A. Sanna;R. Cesaroni;C. Walmsley
• 通讯作者: C. Walmsley