Organic Complexity in Protostellar Disk Candidates
| العنوان: | Organic Complexity in Protostellar Disk Candidates |
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| المؤلفون: | Jennifer B. Bergner, Elizabeth Artur de la Villarmois, Jes K. Jørgensen, Karin I. Öberg, Christian Brinch, Rafael Martín-Doménech |
| المصدر: | ACS Earth and Space Chemistry Bergner, J B, Martín-Doménech, R, Öberg, K I, Jørgensen, J K, Artur De La Villarmois, E & Brinch, C 2019, ' Organic Complexity in Protostellar Disk Candidates ', ACS Earth and Space Chemistry, vol. 3, no. 8, pp. 1564-1575 . https://doi.org/10.1021/acsearthspacechem.9b00059Test |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | interstellar medium, Physics, Atmospheric Science, Astrochemistry, Serpens, astrochemistry, complex organic molecules, FOS: Physical sciences, Astrophysics, Astrophysics - Astrophysics of Galaxies, 01 natural sciences, 010305 fluids & plasmas, Organic molecules, Interstellar medium, Astrophysics - Solar and Stellar Astrophysics, 13. Climate action, Space and Planetary Science, Geochemistry and Petrology, low-mass protostars, Astrophysics of Galaxies (astro-ph.GA), 0103 physical sciences, Cluster (physics), hot corinos, 010303 astronomy & astrophysics, Solar and Stellar Astrophysics (astro-ph.SR) |
| الوصف: | We present ALMA observations of organic molecules towards five low-mass Class 0/I protostellar disk candidates in the Serpens cluster. Three sources (Ser-emb 1, Ser-emb 8, and Ser-emb 17) present emission of CH3OH as well as CH3OCH3, CH3OCHO, and CH2CO, while NH2CHO is detected in just Ser-emb 8 and Ser-emb 17. Detecting hot corino-type chemistry in three of five sources represents a high occurrence rate given the relative sparsity of these sources in the literature, and this suggests a possible link between protostellar disk formation and hot corino formation. For sources with CH3OH detections, we derive column densities of 10^{17}-10^{18} cm^{-2} and rotational temperatures of ~200-250 K. The CH3OH-normalized column density ratios of large, oxygen-bearing COMs in the Serpens sources and other hot corinos span two orders of magnitude, demonstrating a high degree of chemical diversity at the hot corino stage. Resolved observations of a larger sample of objects are needed to understand the origins of chemical diversity in hot corinos, and the relationship between different protostellar structural elements on disk-forming scales. Comment: Accepted to ACS Earth & Space Chemistry |
| وصف الملف: | application/pdf |
| تدمد: | 2472-3452 |
| DOI: | 10.1021/acsearthspacechem.9b00059 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::61d5df1f4eb03558878c0a92c1afe2c3Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....61d5df1f4eb03558878c0a92c1afe2c3 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 24723452 |
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| DOI: | 10.1021/acsearthspacechem.9b00059 |