散开
发表于 2025-3-23 11:10:01
Late-Type Stars Seen at High Spectral Resolution at Mid-Infrared Wavelengthsdust and small to intermediate sized molecules—especially molecules composed of refractory materials like metal atoms, carbon or silicon. To better understand the chemical composition of gas-phase species in the region around these stars, molecules can be observed at mid-infrared wavelengths, i.e.,
nurture
发表于 2025-3-23 16:55:25
The Stardust Machine Projecton zone of the inner envelope of evolved stars. Stardust offers a high degree of control and in-situ analysis capabilities of the molecular species and grains produced, and thus provides astronomers with a workbench to test ideas about possible chemical mechanisms operating in the photosphere of a r
包裹
发表于 2025-3-23 18:55:09
Generation of Interstellar Carbonaceous Dust Analogs in C2H2 Plasmas: Gas-Phase Reactions and Particed combining mass spectrometry measurements and a simple kinetic model, and the deposited dust has been characterized by Fourier transform infrared spectroscopy and scanning electron microscopy. The analysis of the first stages of polymerization reveals a stepwise mechanism for the different species
上流社会
发表于 2025-3-24 01:20:39
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方便
发表于 2025-3-24 05:20:13
Physics and Chemistry of PhotoDissociation Regionseraction occurs in Photo-Dissociation Regions (PDRs) where stellar far-ultraviolet photons create a largely neutral, warm region. PDR emission dominates the IR spectra of star-forming galaxies and provides a unique tool to study in detail the physical and chemical processes that are relevant for int
整体
发表于 2025-3-24 08:05:27
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伤心
发表于 2025-3-24 13:05:36
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令人发腻
发表于 2025-3-24 18:33:50
Gas and Dust in the Circumstellar Envelopes of Stars on (and Beyond) the AGBtmosphere, and photo-induced chemistry in the outflow. Commensurate with the evolution of the gas is the formation of different microscopic solid-state particles, dust grains. The molecular setup and the grain properties depend on the characteristics and evolutionary state of the central star.
意外的成功
发表于 2025-3-24 21:24:42
Die Zukunft der „Sozialen Stadt“olecules and the growth of nanometer-sized clusters, is challenging. We aim to address what Al:O stoichiometries are involved and what cluster size characterises the amorphous-to-crystalline transition. To tackle these questions, we employ a quantum-chemical bottom-up approach.
人类的发源
发表于 2025-3-25 02:34:39
Jakob Lempp,Thomas Pitz,Jörn Sickmanned giant, supernova ejecta or other hypothetical cosmic environment. The chemistry in Stardust is based on gas-phase low-energy atom aggregation, and the densities of the elements under study can be tuned to approximately match those in the dust nucleation zone of evolved stars.