The early stages of star formation: glycolaldehyde and its isomers as dense core tracers

恒星形成的早期阶段：乙醇醛及其异构体作为致密核心示踪剂

• 批准号: ST/L001748/1
• 负责人: Serena Viti
• 金额: $ 0.23万
• 依托单位: University College London
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2013
• 资助国家: 英国
• 起止时间: 2013 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=ST%2FL001748%2F1
• 关键词: early; stages; star; formation; glycolaldehyde

We have been awarded (and scheduled over 4 nights) 16 hours of observing time at the JCMT in Hawaii, for project M13AU21. We are proposing to observe the simple sugar glycolaldehyde and its isomers in order to understand the physical and chemical conditions in hot molecular cores, sites of massive star formation. Our team previously found glycolaldehyde to be more compact than any other molecule in G31.41+0.31, thereby tracing the densest, hottest inner region of this hot core. Its isomers may also trace these inner regions, allowing us to further probe the conditions at the very centre of the core. Understanding the abundance ratio of these isomers can constrain hot core chemistry and reveal physical conditions and chemical pathways. We are requesting travel and subsistence money for Hannah Calcutt to go observing at the JCMT (note that we have been scheduled in 1 month time and we have only been told few days ago about it).

我们在夏威夷的JCMT获得了16个小时的观测时间（计划超过4个晚上），用于项目M13 AU 21。我们建议观察简单的糖乙醇醛及其异构体，以了解热分子核心的物理和化学条件，大质量星星形成的网站。我们的团队先前发现乙醇醛比G31.41+0.31中的任何其他分子都更紧凑，从而追踪了这个热核心的致密，最热的内部区域。它的同分异构体也可能追踪到这些内部区域，使我们能够进一步探测地核中心的状况。了解这些异构体的丰度比可以限制热核化学，揭示物理条件和化学途径。我们正在为汉娜·卡尔卡特申请旅行和生活费，以便她去JCMT观察（请注意，我们已经安排在1个月的时间内，我们几天前才被告知）。

项目成果

DETECTABILITY OF GLYCINE IN SOLAR-TYPE SYSTEM PRECURSORS

• DOI: 10.1088/2041-8205/787/2/l33
• 发表时间: 2014-04
• 期刊: The Astrophysical Journal Letters
• 作者: I. Jímenez-Serra;L. Testi;P. Caselli;S. Viti

Glycolaldehyde, methyl formate and acetic acid adsorption and thermal desorption from interstellar ices

• DOI: 10.1093/mnras/stu2490
• 发表时间: 2015-02-21
• 期刊: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
• 影响因子: 4.8
• 作者: Burke, Daren J.;Puletti, Fabrizio;Slater, Ben
• 通讯作者: Slater, Ben

Extended warm gas in Orion KL as probed by methyl cyanide

• DOI: 10.1051/0004-6361/201321872
• 发表时间: 2014-02
• 期刊: Astronomy and Astrophysics
• 影响因子: 6.5
• 作者: T. Bell;J. Cernicharo;S. Viti;N. Marcelino;A. Palau;G. Esplugues;B. Tercero

Trapping and desorption of complex organic molecules in water at 20 K.

20 K 水中复杂有机分子的捕获和解吸。

• DOI: 10.1063/1.4934264
• 发表时间: 2015
• 期刊: The Journal of chemical physics
• 作者: Burke DJ

Ethylene oxide and acetaldehyde in hot cores

热核心中的环氧乙烷和乙醛

• DOI: 10.1051/0004-6361/201322598
• 发表时间: 2014
• 期刊: Astronomy & Astrophysics
• 影响因子: 6.5
• 作者: Occhiogrosso A