作者: CHARM 時(shí)間: 2025-3-21 23:16 作者: Sleep-Paralysis 時(shí)間: 2025-3-22 03:30 作者: 易發(fā)怒 時(shí)間: 2025-3-22 06:20
Consequences of Dust in Damped Lyman-Alpha Systemstion of Cr relative to Zn. Both methods give a typical dust-to-gas ratio roughly 10% of that in the Milky Way. Here, we review some of the consequences of these observations. First, the dust in damped Ly. systems causes obscuration and hence incompleteness in optically selected samples of quasars. W作者: jeopardize 時(shí)間: 2025-3-22 09:32 作者: 小歌劇 時(shí)間: 2025-3-22 15:22
The Mass Spectrum of Giant Hydrogen Clouds Associated with Damped Ly, Absorberswn and nearby galaxies shows that these absorbers may be interpreted as giant hydrogen clouds (GHCs) in intervening galaxies along the lines-of-sight. We show that the observational data on the redshift and column density distribution of the DLAs may be used to study the mass spectrum of GHCs and it作者: 小鹿 時(shí)間: 2025-3-22 18:00
A Damped Ly, Survey at , < 1.65damped Ly. systems studied so far are found to have corresponding MgII absorption. From known MgII absorption-line statistics, we determine an upper limit to the number of damped Ly. systems per unit redshift, ..., at <.> ≈ 0.8 that is consistent with the trend at higher redshift as well as the numb作者: 不發(fā)音 時(shí)間: 2025-3-22 22:05 作者: 無(wú)情 時(shí)間: 2025-3-23 04:57 作者: 慷慨不好 時(shí)間: 2025-3-23 07:43 作者: 兩棲動(dòng)物 時(shí)間: 2025-3-23 10:56
Lyman α Emission from Galaxies at High Redshiftse that the Lyman α luminosity of high redshift galaxies is generally less than 10. erg s.. We also present a newly discovered case, in the field of the QSO Q2059–360, where the emission is unusually strong, possibly because the damped system is close in redshift to the QSO.作者: preservative 時(shí)間: 2025-3-23 14:51 作者: 本土 時(shí)間: 2025-3-23 21:25 作者: 遠(yuǎn)地點(diǎn) 時(shí)間: 2025-3-24 00:31
Abundances and Ionization in Multiple-Component Absorbers regions consistent with photoionization by hot stars, and higher ionization components that dominate at higher relative velocities. The column densities derived from the N I triplet suggest that [O/H] is depleted by ?2.1 dex relative to solar values. Comparison of the predicted vs. observed column 作者: Merited 時(shí)間: 2025-3-24 05:35
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.作者: Semblance 時(shí)間: 2025-3-24 06:33
Chemical Evolution of (Proto-) Galactic Disks and Metal Abundances of Damped Lyα Absorbersundances and element ratios. Our models explicitly account for SNI contributions to .Fe, etc. Comparison with curve of growth determined abundances of metal line systems associated with damped Lyα absorbers shows that作者: 沖突 時(shí)間: 2025-3-24 13:52 作者: 歡樂(lè)中國(guó) 時(shí)間: 2025-3-24 18:50 作者: 進(jìn)取心 時(shí)間: 2025-3-24 19:59 作者: 團(tuán)結(jié) 時(shí)間: 2025-3-25 02:03
Abundances and Nature of the Absorbersrved all over the accessible redshift range 0 < . < 5. We therefore need an overall picture describing how the gas evolve. Recent N-body simulations with improved treatment of photoionization and cooling of the baryonic material show that Lymanα clouds could trace the filamentary structures of the dark matter.作者: 瘙癢 時(shí)間: 2025-3-25 04:05 作者: Cardiac 時(shí)間: 2025-3-25 09:49
Abundances and Ionization in Multiple-Component Absorbersthe Zn II / H I ratio provides only a weak upper limit to [Fe/H] for the system. The (S II / Zn II) value implies a strong Fe-peak enhancement relative to .-product elements, compared to Galactic halo stars at [Fe/H] = ?2.2. The consequence is that the relative rates of supernovae Type I and Type II may depend on local conditions.作者: 無(wú)能力 時(shí)間: 2025-3-25 13:46
1431-2433 systems or ejecta from the QSO themselves is settled. QSO absorption line spectroscopy, initially a mere technique, has matured into an essential extragalactic research tool for understanding the content of the Universe at redshifts between 0 and 4, and beyond. The only previous important meeting d作者: 有毒 時(shí)間: 2025-3-25 19:41
ESO Astrophysics Symposiahttp://image.papertrans.cn/q/image/780022.jpg作者: 凹槽 時(shí)間: 2025-3-25 21:35 作者: FILTH 時(shí)間: 2025-3-26 02:33 作者: 滑動(dòng) 時(shí)間: 2025-3-26 06:18
QSO Absorption by Nearby Galaxiesl views highlighted by the recent NATO conference on the opacity of spiral disks. We find that a significant amount of the universe will be obscured at redshifts important to QSO astronomers. This implies that any studies at high redshift should take account of this absorption.作者: CHART 時(shí)間: 2025-3-26 11:45
High Redshift Lyman Limit and Damped Lyman-Alpha Absorbersed to create new samples of high redshift Lyman-limit and damped Lyman-a absorbers. These data have been combined with published data sets in a study of the redshift evolution and the column density distribution function for absorbers with logN(HI)≥ 17.5, over the redshift range 0.01 < z < 5. The main results are:作者: Evocative 時(shí)間: 2025-3-26 13:32 作者: FOVEA 時(shí)間: 2025-3-26 19:47 作者: 倔強(qiáng)不能 時(shí)間: 2025-3-26 22:55
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.作者: Infelicity 時(shí)間: 2025-3-27 03:19
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.作者: ELUC 時(shí)間: 2025-3-27 07:03
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.作者: UTTER 時(shí)間: 2025-3-27 09:58
978-3-662-22373-4Springer-Verlag Berlin Heidelberg 1995作者: Heart-Rate 時(shí)間: 2025-3-27 13:45
QSO Absorption Lines978-3-540-49458-4Series ISSN 1431-2433 Series E-ISSN 1611-6143 作者: implore 時(shí)間: 2025-3-27 21:30
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作者: 走路左晃右晃 時(shí)間: 2025-3-27 23:02 作者: aptitude 時(shí)間: 2025-3-28 03:34
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作者: 迫擊炮 時(shí)間: 2025-3-28 08:12
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作者: Self-Help-Group 時(shí)間: 2025-3-28 12:40 作者: 擴(kuò)張 時(shí)間: 2025-3-28 16:58
S. Michael Fall,Yichuan C. Peial 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作者: 細(xì)節(jié) 時(shí)間: 2025-3-28 20:16
Patrick Boisséus narration’, a form of storytelling which is usually told around the fire or at home just before bedtime and opens a world of imagination that captivates the minds of listeners. This chapter explores the continuity of the tradition of Inganekwane by South African women story tellers by analysing t作者: 碎石頭 時(shí)間: 2025-3-29 02:38
M. Trewhella,M. Disney,J. Daviesthe case study of labour immigration. Apartheid South Africa and colonial powers recruited black men from the whole region of Southern Africa to work in the mines, paid them next to nothing, and left African women as the heads of their household. Hence the novel presents us with Kgetho, who like, th作者: Paleontology 時(shí)間: 2025-3-29 03:44
V. K. Khersonsky,D. A. Turnshek the sacred. These three motifs feature conspicuously in Bulawayo’s literary oeuvre to shed light on profound impacts of othering rational and abusive gendered culture on one’s sense of being, (un)belonging and identity in contemporary times. Without downplaying, the dystopic and melancholic aspects作者: 斜 時(shí)間: 2025-3-29 10:22 作者: 防水 時(shí)間: 2025-3-29 11:38
L. J. Storrie-Lombardi,R. G. McMahon,M. J. Irwin,C. Hazarddespite facing such challenges in Zimbabwe. Tsitsi Dangarembga’s . (2018) explores the dispossession of these women of their sources of livelihood—the land and other facets of life. The novel is set in post-independence Zimbabwe where almost every Zimbabwean is expected to live in a land of plenty w作者: 討好美人 時(shí)間: 2025-3-29 18:52
Julio Saucedo,Jill Bechtoldfor a father leads her to connect with a stranger, Muhidin, whom she claims and adopts as her own father. The geographical setting of her home exposes her to outgoings of waves, of ships and of strangers. Ayaana lives within the sight of the sea, and within the constant hearing of the sound and ebb 作者: Forage飼料 時(shí)間: 2025-3-29 19:58
A. J. Bunker,S. J. Warren,P. C. Hewett,D. L. Clementscognising the value of this work, in this chapter, I draw on Crenshaw’s theory of intersectionality to interrogate complex interactions between Earth, gender, race, class, and religious identity that confer privilege and marginalisation in Head’s short stories. In so doing, I make three key argument作者: gnarled 時(shí)間: 2025-3-30 02:53 作者: 衰弱的心 時(shí)間: 2025-3-30 07:26
sphere,” as we see in this chapter on Chaucer’s . The emphasis in the tale becomes one of comfort and subsistence, two areas defined by gender and now by species. With the ., Geoffrey Chaucer moves from the psychological schema inherent in dream visions to the overtly representational, dramatic gen作者: dagger 時(shí)間: 2025-3-30 09:45 作者: pericardium 時(shí)間: 2025-3-30 14:11 作者: 打算 時(shí)間: 2025-3-30 17:17
Keith Lipman,Max Pettini,Richard W. Hunstead la diagnosi di malattia.?Notevoli e rapidi avanzamenti tecnologici hanno portato alla? sempre maggiore diffusione delle procedure interventistiche?ecoguidate, modificando in modo significativo le strategie diagnostiche e terapeutiche di molte patologie. Il volume presenta una concisa panoramica del作者: 全部 時(shí)間: 2025-3-30 21:54
Max Pettini,David L. King,Linda J. Smith,Richard W. Hunstead作者: Nebulizer 時(shí)間: 2025-3-31 02:17 作者: Immunoglobulin 時(shí)間: 2025-3-31 08:01 作者: 眉毛 時(shí)間: 2025-3-31 11:29 作者: 含沙射影 時(shí)間: 2025-3-31 15:45
y, and for Boyle, the vehicle for an ideal of experimental proof and of dominion over nature. Rich speaks “for” her mouse, while Boyle hardly thinks of mice and speaking in the same breath. The mouse, halfway between material and metaphor, stands “as a telling index of the gender politics that infor作者: 大量殺死 時(shí)間: 2025-3-31 18:08
gardeners instructed to regard bark as a surface fit to receive the alphabetic “l(fā)etters” made with sharp-edged tools but this integument also comprised and encased the early modern codex, whose etymological roots we trace back to the tree’s trunk. We graft, then, to illuminate the rich poetic conten作者: 正面 時(shí)間: 2025-3-31 22:32
