Results 141 to 150 of about 205,088 (284)

The Oxygen Abundance of Nearby Galaxies from Sloan Digital Sky Survey Spectra

, 2007
We have derived the oxygen abundance for a sample of nearby galaxies in the Data Release 5 of the Sloan Digital Sky Survey (SDSS) which possess at least two independent spectra of one or several HII regions with a detected [OIII]4363 auroral line. Since,
Campbell A., Edmunds M. G., Kinkel U., Leonid S. Pilyugin, Luridiana V., Pagel B. E. J., Pagel B. E. J., Pagel B. E. J., Pilyugin L. S., Pilyugin L. S., Trinh X. Thuan   +10 more
core   +1 more source

The Rule of Law and Full‐Bodied Promulgation

The Modern Law Review, Volume 88, Issue 3, Page 502-526, May 2025.
Promulgation is a fundamental component of most theories about the rule of law yet remains an under‐theorised aspect of the concept. This article makes two contributions concerning the functions of promulgation in the rule of law. First, promulgation can be broken down into formal promulgation, the process of formally publishing rules, and full‐bodied ...
James Milton
wiley   +1 more source

Carbon and Iron Deficiencies in Quiescent Galaxies at z = 1–3 from JWST-SUSPENSE: Implications for the Formation Histories of Massive Galaxies

The Astrophysical Journal
We present the stellar metallicities and multielement abundances (C, Mg, Si, Ca, Ti, Cr, and Fe) of 15 massive (log M / M _⊙ = 10.2–11.2) quiescent galaxies at z = 1–3, derived from ultradeep JWST-SUSPENSE spectra. Compared to quiescent galaxies at z ∼ 0,
Aliza G. Beverage, Martje Slob, Mariska Kriek, Charlie Conroy, Guillermo Barro, Rachel Bezanson, Gabriel Brammer, Chloe M. Cheng, Anna de Graaff, Natascha M. Förster Schreiber, Marijn Franx, Brian Lorenz, Pavel E. Mancera Piña, Danilo Marchesini, Adam Muzzin, Andrew B. Newman, Sedona H. Price, Alice E. Shapley, Mauro Stefanon, Katherine A. Suess, Pieter van Dokkum, David Weinberg, Daniel R. Weisz   +22 more
doaj   +1 more source

The population of planetary nebulae and HII regions in M81. A study of radial metallicity gradients and chemical evolution

, 2010
We analyze the chemical abundances of planetary nebulae and HII regions in the M81 disk for insight on galactic evolution, and compare it with that of other galaxies, including the Milky Way. We acquired Hectospec/MMT spectra of 39 PNe and 20 HII regions,
Appleton, Asplund, Benjamin, Cahn, Clegg, Connolly, D. Galli, Davidge, Deharveng, Dors, Draine, E. Villaver, Fabricant, Freedman, Garnett, Garnett, Gordon, Gottesman, Henry, Hodge, Hodge, Jacoby, Karachentsev, Karakas, Kingsburgh, Kong, Käufl, L. Magrini, L. Stanghellini, Leisy, Lin, Maciel, Magrini, Magrini, Magrini, Magrini, Maraston, Marigo, Massey, Mathis, Mollá, Pagel, Perinotto, Perinotto, Rohlfs, Sabbi, Schönrich, Shaw, Stanghellini, Stanghellini, Stanghellini, Stanghellini, Stanghellini, Valle, Villaver, Walterbos, Weisz, Yun, Yun, Zaritsky   +59 more
core   +1 more source

The potential of red‐fleshed apples for cider production

Comprehensive Reviews in Food Science and Food Safety, Volume 24, Issue 3, May 2025.
Abstract Cider quality is influenced by numerous factors relating to the apples used during production. While extensive research has been done to explore the phenolic content, sensory quality, and storage stability of various apple products, the domain of fermented apple products, such as ciders, remains underrepresented. Red‐fleshed apples (RFAs) have
Marbi Schwartz, Dalene de Beer, Jeannine Marais   +2 more
wiley   +1 more source

Investigating the Lower Limit of Metallicity for the Galactic Thin Disk

The Astrophysical Journal
We explore the metal-poor regime of the Galactic disk on the distribution of stars in the [ α /M]– V _ϕ plane, to identify the most metal-poor thin disk (MPTnD) stars belonging to the low- α sequence.
Guozhen Hu, Zhengyi Shao, Erbil Gügercinoǧlu, Wenyuan Cui   +3 more
doaj   +1 more source

Stellar Populations of the Galactic Disk: Metallicity Distribution and Kinematics

Open Astronomy, 2003
Metallicities and distances have been determined from Vilnius photometry for an in situ sample of nearly 650 stars in eight proper-motion fields at high Galactic latitudes.
Bartašiūtė S., Aslan Z., Boyle R. P., Kharchenko N. V., Ossipkov L. P., Sperauskas J.   +5 more
doaj   +1 more source

The Chemical Abundances of the Halo Clusters of the Galaxy [PDF]

, 1978
R. Canterna, R. A. Schommer
openalex   +1 more source

An Oxygen Abundance Gradient into the Outer Disk of M81

, 2012
The extended HI disk and tidal tails of M81 present an interesting environment to study the effects of galaxy interaction on star formation and chemical evolution of the outer disk of a large spiral galaxy.
Allen, Appleton, Arp, Baldwin, Barker, Boissier, Bresolin, Bresolin, Bresolin, Cardelli, Chiappini, Chiappini, Chiappini, Chiboucas, Chynoweth, Contini, Cristina Chiappini, Croxall, David A. Thilker, Davidge, Davies, de Blok, de Mello, De Robertis, Deharveng, Durrell, Durrell, Esteban, Fabbiano, Ferguson, Freedman, García-Benito, Garnett, Garnett, Gil, Goddard, Gogarten, Gogarten, Greenawalt, Grisé, Hodge, Hoversten, Immler, Karachentsev, Kennicutt, Kewley, Kewley, Kewley, Kobulnicky, Kong, Kudritzki, Lin, Makarova, Makarova, Marcon-Uchida, Maria T. Patterson, Matteucci, McGaugh, Miller, Miller, Molla, Mollá, Mouhcine, Moustakas, Münch, Osterbrock, Pagel, Perez, Petit, Pilyugin, Prantzos, Press, Pérez-González, Renda, Rene A. M. Walterbos, Robert C. Kennicutt, Rohlfs, Rood, Rudolph, Rupke, Rupke, Sabbi, Shaw, Skillman, Sollima, Stanghellini, Sternberg, Thilker, Thilker, Tody, Vacca, Vlajić, Vlajić, Walter, Wang, Weisz, Werk, Werk, Yin, Yun, Yun, Zaritsky   +101 more
core   +1 more source

Abundance gradients and galaxy formation

The Astrophysical Journal, 1991
A three-dimensional collisionless code is used to simulate the formation of elliptical galaxies with a time scale for star formation comparable to the collapse time. A one-zone chemical evolution scheme is used to compute the evolution of the abundances of several chemical elements.
Massimo Stiavelli, F. Matteucci
openaire   +2 more sources