Results 111 to 120 of about 52,634 (236)

Searching for Emission Lines at z > 11: The Role of Damped Lyα and Hints About the Escape of Ionizing Photons

The Astrophysical Journal
We describe new ultradeep James Webb Space Telescope (JWST) NIRSpec PRISM and grating spectra for the galaxies JADES-GS-z11-0 ( ${z}_{\mathrm{spec}}={11.122}_{-0.003}^{+0.005}$ ) and JADES-GS-z13-0 ( ${z}_{\mathrm{spec}}={13.20}_{-0.04}^{+0.03}$ ), the ...
Kevin N. Hainline, Francesco D’Eugenio, Peter Jakobsen, Jacopo Chevallard, Stefano Carniani, Joris Witstok, Zhiyuan Ji, Emma Curtis-Lake, Benjamin D. Johnson, Brant Robertson, Sandro Tacchella, Mirko Curti, Stephane Charlot, Jakob M. Helton, Santiago Arribas, Rachana Bhatawdekar, Andrew J. Bunker, Alex J. Cameron, Eiichi Egami, Daniel J. Eisenstein, Ryan Hausen, Nimisha Kumari, Roberto Maiolino, Pablo G. Pérez-González, Marcia Rieke, Aayush Saxena, Jan Scholtz, Renske Smit, Fengwu Sun, Christina C. Williams, Christopher N. A. Willmer, Chris Willott   +31 more
doaj   +1 more source

Chemical Abundances of Planetary Nebulae in the Sagittarius Dwarf Elliptical Galaxy [PDF]

, 1997
J. R. Walsh, G. Dudziak, D. Minniti, A. A. Zijlstra   +3 more
openalex   +1 more source

Potential Spectral Tuning of the Tapetum Lucidum in a Broadly Distributed Ungulate

Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, Volume 343, Issue 8, Page 905-910, October 2025.
ABSTRACT The tapetum lucidum, a biological reflector system found in the eyes of many vertebrate species, enhances visual sensitivity in low light conditions by reflecting light back through the retina. The structure of the ungulate tapetum fibrosum is unique, and its reflectance varies temporally in reindeer (Rangifer tarandus).
Blaise A. Newman, Billy R. Hammond Jr., Gino J. D'Angelo   +2 more
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

Phosphorus-bearing molecules PO and PN at the edge of the Galaxy. [PDF]

Nature, 2023
Koelemay LA, Gold KR, Ziurys LM.
europepmc   +1 more source

Oxygen Abundances in Diffuse Ellipticals and the Metallicity-Luminosity Relation for Dwarf Galaxies [PDF]

, 1996
M. G. Richer, M. L. McCall, N. Arimoto
openalex   +1 more source

Porphyromonas gingivalis Type 9 Secretion System Promotes Dysregulation of Vascular Smooth Muscle Cell Plasticity With Perturbed TGF‐β/Smad Signaling

MicrobiologyOpen, Volume 14, Issue 5, October 2025.
An intact type 9 secretion system (T9SS) is required for Porphyromonas gingivalis‐mediated dysregulation of aortic smooth muscle cell migration and proliferation. During infection, T9SS also enhanced phosphorylation of multiple sites on transcription factor Smad3 that is implicated in pathologic cell responses to TGF‐β/Smad signaling.
Priscilla L. Phillips, Leticia Reyes
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

The Metallicity of High‐Redshift Galaxies: The Abundance of Zinc in 34 Damped Lyα Systems fromz= 0.7 to 3.4 [PDF]

, 1997
Max Pettini, L. J. Smith, David L. King, R. W. Hunstead   +3 more
openalex   +1 more source

Molecular Evolution and Gene Diversity of Dermatan Sulfate Sulfotransferases in Ascidians

Proteoglycan Research, Volume 3, Issue 4, October 2025.
ABSTRACT Ascidians (Chordata, Tunicata) are model organisms for studying molecules, particularly sulfated glycosaminoglycans (GAGs), due to their phylogenetic proximity to vertebrates and unique GAG variants. Over‐sulfated dermatan sulfate (DS) contributes to proteoglycan diversity and cellular processes in metazoans.
Vanessa de Sousa Rizzo‐Valente, Mauro S. G. Pavão   +1 more
wiley   +1 more source