倔强不能
发表于 2025-3-26 22:55:31
Element Abundances at High Redshifts: The N/O Ratio at Low Metallicity α systems offer a new approach for tracking the evolution of normal galaxies from early epochs to the present day. Here we report the first measurements of nitrogen abundances in galaxies with less than 1/100 of solar metallicity, a range unexplored by previous observations.
Infelicity
发表于 2025-3-27 03:19:43
Are Studies of Dust in Damped Lyman-, Systems Biased by Extinction ?We discuss whether the low dust to gas ratio and the absence of molecules in damped Ly. absorbers is a true characteristic of the latter or rather the result of a selection effect induced by dust extinction.
ELUC
发表于 2025-3-27 07:03:33
The Chemical Evolution of Damped Lyman α GalaxiesMeasurements of element abundances in damped Lyman α systems are providing new means to investigate the chemical evolution of galaxies, particularly at early times. We review progress in this area, concentrating on recent efforts to extend the range of existing surveys to both higher and lower redshifts.
UTTER
发表于 2025-3-27 09:58:33
978-3-662-22373-4Springer-Verlag Berlin Heidelberg 1995
Heart-Rate
发表于 2025-3-27 13:45:22
QSO Absorption Lines978-3-540-49458-4Series ISSN 1431-2433 Series E-ISSN 1611-6143
implore
发表于 2025-3-27 21:30:28
Rich, Countess of Warwick, and the other to Robert Boyle, Rich’s brother. Rich’s mouse is brought to her by a servant, having been trapped and killed in the family liquor cabinet. In Rich’s diary, the “domestic mouse caught in a trap with the cheese/evidence still in its mouth” becomes, in Bowerban
走路左晃右晃
发表于 2025-3-27 23:02:58
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aptitude
发表于 2025-3-28 03:34:30
Ray Weymannal autobiography covering the first 30 years of life has recently been discovered in the Princeton University Library. This chapter grows out of the previous, shared project of annotating the medical content of this manuscript, Isham’s . (c. 1639), for an online edition. When analyzing the medical r
迫击炮
发表于 2025-3-28 08:12:39
al autobiography covering the first 30 years of life has recently been discovered in the Princeton University Library. This chapter grows out of the previous, shared project of annotating the medical content of this manuscript, Isham’s . (c. 1639), for an online edition. When analyzing the medical r
Self-Help-Group
发表于 2025-3-28 12:40:07
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