Results 111 to 120 of about 8,365,552 (275)
The rotation curves shapes of late-type dwarf galaxies [PDF]
, 2008 We present rotation curves derived from Hi observations for a sample of 62 galaxies that have been observed as part of the Westerbork Hi Survey of Spiral and Irregular Galaxies (WHISP) project.
J. M. van der Hulst +8 more
core +2 more sources
Meteoritics &Planetary Science, EarlyView.Abstract In the search for life on Mars, understanding the origin of preserved organics is critical. Expected sources include exogenous delivery, endogenous synthesis, and potentially life. Environmental processing by ultraviolet (UV) irradiation can alter these organics, obscuring hallmarks of their origin. To deconvolve these effects, we conducted an
D. K. Buckner +7 more
wiley +1 more source
Searching for strong lensing by late-type galaxies in UNIONS
Astronomy & AstrophysicsRecent wide-field galaxy surveys have led to an explosion in the number of galaxy-scale strong gravitational lens candidates. However, the vast majority of them feature massive luminous red galaxies as the main deflectors, with late-type galaxies being ...
Acevedo Barroso J. A. +10 more
doaj +1 more source
Measuring the star formation rate density from CNOC2 [PDF]
, 2006 This thesis charts the evolution of the Universal Star Formation Rate Density (SFRD) across the redshift range 0.2 < z < 0.6, using the 2nd Canadian Network for Observational Cosmology Survey (CN0C2).
Whitaker, Richard James
core
Molecular Microbiology, EarlyView.YdcI, a LysR‐type transcription regulator in Escherichia coli, regulates loci like iraP and mqo. Its expression is induced by (p)ppGpp under stress conditions, and protein levels rise during mid‐exponential growth, connecting its role to stress response and metabolism control. ABSTRACT YdcI, a LysR‐type transcription regulator, has been associated with
Ria Basu Roy, Karin Schnetz
wiley +1 more source
The clustering and X-ray properties of faint galaxies [PDF]
, 1994 The clustering properties of faint (23 ≤ B ≤ 27) galaxies were investigated, with the aim of obtaining information about their redshift distribution, N(z), and therefore about the processes of galaxy evolution causing the steep rise in the galaxy number ...
Roche, Nathan, Roche, N
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Nature's Complexity Alive: Farewell to Several Unificatory Cosmological Arguments for Monism
Noûs, EarlyView.ABSTRACT Throughout history, numerous thinkers have claimed that monism—in the form of priority monism, existence monism, monotheistic monism, or versions that posit an extra‐cosmic ultimate being—theoretically surpasses pluralism, above all by positing a unified universe.
Lok‐Chi Chan
wiley +1 more source
The nature of late-type spiral galaxies
Monthly Notices of the Royal Astronomical Society, 2009 We analyse V-and H-band surface photometry of a sample of 18 Sb-Sd galaxies. Combining high-resolution Hubble Space Telescope (HST) images with ground-based near-infrared observations, we extract photometric profiles, which cover the whole disc and provide the highest possible resolution.
Ganda, Katia +3 more
openaire +1 more source
The nature of early-type galaxies in hierarchical models [PDF]
, 2008 In this Thesis we describe the properties of early-type galaxies in the context of hierarchical galaxy formation. We use two variants of the GALFORM model originally introduced by Cole et al.: the Baugh et al. and the Bower et al. models.
Almeida, Cesário Manuel de Deus Lavaredas de
core
VLT spectroscopy of globular cluster systems:II. spectroscopic ages, metallicities, and [alpha/Fe] ratios of globular clusters in early-type galaxies [PDF]
, 2004 An analysis of ages, metallicities, and [ α/Fe] ratios of globular cluster systems in early-type galaxies is presented, based on Lick index measurements summarized in Puzia et al. (2004, A&A, 415, 123, Paper I of this series).
R. Bender +22 more
core +1 more source