indignant
发表于 2025-3-26 21:07:37
FOR XML and Legacy XML Support,surge of studies of the elemental abundance trends in the disks using high resolution spectroscopy. Here I will review and discuss the currently available data. Special focus will also be put on how we define stars to be members of either disk, and how current models of galaxy formation favour that
insomnia
发表于 2025-3-27 03:50:51
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反话
发表于 2025-3-27 07:03:22
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Junction
发表于 2025-3-27 11:34:19
XQuery Functions and Operators and XML DML,rison with theoretical predictions. From the analysis of diagrams of abundances of N/O vs He/H, N/O vs N/H and N/O vs O/H we argue that very likely the often used solar photospheric abundance of oxygen of 8.9, in usual units, is overestimated by a factor of 2-3, as suggested by very recent work in t
SEVER
发表于 2025-3-27 17:00:07
FOR XML and Legacy XML Support,iques and compared the results obtained in order to establish their respective merits and faults. The two spectroscopic methods give consistent results suggesting that non- LTE effects are small, whereas the ‘mixed’ spectroscopic-photometric method leads to photospheric parameters and abundances sys
来自于
发表于 2025-3-27 20:33:34
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CLASH
发表于 2025-3-28 00:40:17
https://doi.org/10.1007/978-1-4302-0630-9tic anticentre direction. We believe that the high discrepancy in the basic cluster parameters derived in previous studies, particularly in the cluster metal content, warrants their redetermination on the basis of more reliable data.
微尘
发表于 2025-3-28 04:02:45
FOR XML and Legacy XML Support,s element, that has readily observable transitions only in the infrared via vibration-rotation lines of HF. In this paper, we discuss all the available Galactic fluorine abundances to date, and add results for field stars with metallicities between = -0.5 and -1.0, plus two stars that are mem
亚麻制品
发表于 2025-3-28 07:24:24
FOR XML and Legacy XML Support,arfs with cooling sequences. Nucleocosmochronology is the determination of time scales using abundances of radioactive nuclides. It can be used to date the Galactic disk with low dependence on stellar evolution calculations. The nuclides used by us to accomplish this are .Th, with a 14Gyr half-life
不安
发表于 2025-3-28 12:36:15
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