Glycolaldehyde, a sugar-related interstellar prebiotic molecule, has recently been detected in two star-forming regions, Sgr B2(N) and G31.41+0.31. The detection of this new species increased the list of complex organic molecules detected in the interstellar medium (ISM) and adds another level to the chemical complexity present in space. Besides, this kind of organic molecule is important because it is directly linked to the origin of life. For many years, astronomers have been struggling to understand the origin of this high chemical complexity in the ISM. The study of deuteration may provide crucial hints. In this context, we have measured the spectra of deuterated isotopologues of glycolaldehyde in the laboratory: the three monodeuterated ones (CH2OD-CHO, CHDOH-CHO and CH2OH-CDO) and one dideuterated derivative (CHDOH-CDO) in the ground vibrational state. Previous laboratory work on the D-isotopologues of glycolaldehyde was restricted to less than 26 GHz. We used a solidstate submillimeter-wave spectrometer in Lille with an accuracy for isolated lines better than 30 kHz to acquire new spectroscopic data between 150 and 630 GHz and employed the ASFIT and SPCAT programs for analysis. We measured around 900 new lines for each isotopologue and determined spectroscopic parameters. This allows an accurate prediction in the ALMA range up to 850 GHz. This treatment meets the needs for a first astrophysical research, for which we provide an appropriate set of predictions.
The ALMA Protostellar Interferometric Line Survey (PILS): First results from an unbiased submillimeter wavelength line survey of the Class 0 protostellar binary IRAS 16293-2422 with ALMA
ALMA Observations of the IRDC Clump G34.43+00.24 MM3: Complex Organic and Deuterated Molecules
利用阿塔卡马大型毫米波/亚毫米波阵列（ALMA）观测了与红外暗云（IRDC）团簇G34.43+00.24 MM 3有关的热核/科里诺（HC）的复杂有机分子（COMs）和氘代物质。我们已经检测到六个正常COM（CH 3OH，CH 3CHO，CH 3CH 2CN，CH 3 OCH 3，HCOOCH 3和NH 2CHO），一个氘代COM（CH 2DCN），和两个氘代基本分子（D2CO和DNC）对G34.43+00.24 MM 3 HC。在我们的数据中，除了CH 3OH之外，没有检测到这些线朝向冲击区域，这表明COMs不起源于冲击。发现G34.43+00.24 MM 3 HC中COMs相对于CH 3OH的丰度与高质量热核中的丰度相似，而不是低质量恒星形成区中的热Corino中的丰度。这一结果表明，G34.43+00.24 MM 3 HC预热阶段的物理条件与高质量源相似。另一方面，G34.43+00.24 MM 3 HC中相对于CH $_3$ OH的D2CO丰度高于其他热核，并且似乎与热Corino相当。G34.43+00.24 MM 3 HC的相对高的D2CO/CH 3OH比意味着G34.43+00.24 MM 3 HC的长的冷无星相。
Complex Organic Molecules in Protostars with ALMA Spectral Surveys (COMPASS) VII. First interstellar detection of fully deuterated methanol
Max-Planck-Institut für Radioastronomie（马克斯·普朗克射电天文研究所）；Max-Planck-Institut für extraterrestrische Physik（马克斯·普朗克地外物理研究所）；Institut de Recherche en Astrophysique et Planétologie, Université de Toulouse, CNRS, CNES（图卢兹大学、法国国家科学研究中心、法国国家空间研究中心天体物理学和行星学研究所在）；Physikalisch-Meteorologisches Observatorium Davos und Weltstrahlungszentrum (PMOD/WRC)（达沃斯物理气象观测站和世界辐射中心）；Universität Bern（伯尔尼大学）；Niels Bohr Institute, University of Copenhagen（哥本哈根大学尼尔斯·玻尔研究所）；Seoul National University（首尔大学）；National Radio Astronomy Observatory（美国国家射电天文台）；Institute of Astronomy, Department of Physics, National Tsinghua University（国立清华大学物理系天文学研究所）；Univ. Grenoble Alpes, CNRS, IPAG（格勒诺布尔阿尔卑斯大学、法国国家科学研究中心IPAG）
