太空中的复杂有机物:不断变化的宇宙观

IF 3.2 Q2 ASTRONOMY & ASTROPHYSICS Galaxies Pub Date : 2023-10-08 DOI:10.3390/galaxies11050104
Sun Kwok
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引用次数: 0

摘要

行星探测表明,复杂的有机物在太阳系中广泛存在。天文红外光谱观测发现,复杂有机物在行星状星云中大量合成并分布在整个星系中。早在宇宙大爆炸后15亿年,在遥远的星系中就发现了有机物的特征。一些尚未解决的光谱现象,如漫射星际带、扩展红发射、220纳米特征和未识别的红外发射带,很可能来自有机物。在本文中,我们讨论了这些无法解释的现象的载体可能的化学结构,以及这些有机物是如何在宇宙中非生物合成的。我们提出了一种可能性,即原始太阳系是由进化恒星合成和喷射的复杂有机物丰富的。还讨论了原始地球中可能存在的恒星有机物的含义。
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Complex Organics in Space: A Changing View of the Cosmos
Planetary explorations have revealed that complex organics are widely present in the solar system. Astronomical infrared spectroscopic observations have discovered that complex organics are synthesized in large quantities in planetary nebulae and distributed throughout the galaxy. Signatures of organics have been found in distant galaxies, as early as 1.5 billion years after the Big Bang. A number of unsolved spectral phenomena such as diffuse interstellar bands, extended red emissions, 220 nm feature, and unidentified infrared emission bands are likely to originate from organics. In this paper, we discuss the possible chemical structures of the carriers of these unexplained phenomena, and how these organics are synthesized abiotically in the universe. We raise the possibility that the primordial solar system was enriched by complex organics synthesized and ejected by evolved stars. The implications of possible stellar organics in primordial Earth are also discussed.
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来源期刊
Galaxies
Galaxies Physics and Astronomy-Astronomy and Astrophysics
CiteScore
4.90
自引率
12.00%
发文量
100
审稿时长
11 weeks
期刊介绍: Es una revista internacional de acceso abierto revisada por pares que proporciona un foro avanzado para estudios relacionados con astronomía, astrofísica y cosmología. Areas temáticas Astronomía Astrofísica Cosmología Astronomía observacional: radio, infrarrojo, óptico, rayos X, neutrino, etc. Ciencia planetaria Equipos y tecnologías de astronomía. Ingeniería Aeroespacial Análisis de datos astronómicos. Astroquímica y Astrobiología. Arqueoastronomía Historia de la astronomía y cosmología. Problemas filosóficos en cosmología.
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