Results 41 to 50 of about 1,378 (187)

HALO7D. III. Chemical Abundances of Milky Way Halo Stars from Medium-resolution Spectra

The Astrophysical Journal, 2023
The Halo Assembly in Lambda Cold Dark Matter: Observations in 7 Dimensions (HALO7D) survey measures the kinematics and chemical properties of stars in the Milky Way (MW) stellar halo to learn about the formation of our Galaxy.
Kevin A. McKinnon, Emily C. Cunningham, Constance M. Rockosi, Puragra Guhathakurta, Ivanna Escala, Evan N. Kirby, Alis J. Deason   +6 more
doaj   +1 more source

Astragalus zhobensis, a new species of section Caprini (Fabaceae) from Zhob, northern Balochistan, Pakistan

Nordic Journal of Botany, Volume 2025, Issue 12, December 2025.
A new species Astragalus zhobensis, from Qamardin Karez, Zhob district, northern Balochistan, Pakistan is described and illustrated. The new species is morphologically similar to A. cartilagineus, but can be distinguished by strigose hairs 3–5 mm long, (not stiff 1.5−4.0 mm long hairs); stipules 5–15 mm (not 8−12 mm) long; leaflets in 4–6 pairs, (not 3–
Tahir Khan, Nazar Khan, Amjad Khan, Amir Sultan, Kamran Ishaq   +4 more
wiley   +1 more source

Watching Our Galaxy Grow Up: The Mass and Color Evolution of the Milky Way

The Astrophysical Journal
Using our rich observations within the Milky Way to better understand galaxy evolution requires understanding what the Milky Way looks like “as a galaxy”—that is, its “true” shape and abundance profiles (unskewed by observational biases), signatures of ...
Gail Zasowski, Julie Imig, Hayley Coluccio   +2 more
doaj   +1 more source

Simultaneous Observations of Quasi‐Orthogonal Nighttime MSTIDs at Conjugate African‐European Midlatitude Stations on 4 October 2018

Journal of Geophysical Research: Space Physics, Volume 130, Issue 12, December 2025.
Abstract Two quasi‐orthogonal nighttime medium‐scale traveling ionospheric disturbances (MSTIDs) were observed by conjugate midlatitude all‐sky imagers in Sutherland (32.4° ${}^{\circ}$S, 20.8° ${}^{\circ}$E; magnetic latitude: ∼ ${\sim} $−40.9° ${}^{\circ}$) and Asiago (45.87° ${}^{\circ}$N, 11.53° ${}^{\circ}$E; magnetic latitude: ∼40.3° ${\sim} 40.3{
Zama T. Katamzi‐Joseph, Carlos Martinis, Jonathan J. Makela, Yuichi Otsuka, John Bosco Habarulema, Alicreance Hiyadutuje, Shai Toledano, Mark B. Moldwin, Jeffrey Baumgardner   +8 more
wiley   +1 more source

In silico, in vitro and ex vivo characterization of cystic fibrosis transmembrane conductance regulator pathogenic variants localized in the fourth intracellular loop and their rescue by modulators

British Journal of Pharmacology, Volume 182, Issue 24, Page 6063-6080, December 2025.
Background and Purpose Cystic fibrosis (CF) is due to loss‐of‐function variants of the CF transmembrane conductance regulator (CFTR) channel. The most effective treatment for people with CF carrying the F508del mutation is the triple combination of elexacaftor–tezacaftor–ivacaftor (ETI).
Emanuela Pesce, Valeria Tomati, Valeria Capurro, Mariateresa Lena, Cristina Pastorino, Miro Astore, Serdar Kuyucak, Benoit Chevalier, Elvira Sondo, Federico Cresta, Alice Dighero, Vito Terlizzi, Cristina Fevola, Stefano Costa, Maria Cristina Lucanto, Valeria Daccò, Laura Claut, Francesca Ficili, Benedetta Fabrizzi, Renata Bocciardi, Federico Zara, Carlo Castellani, Luis J. V. Galietta, Shafagh A. Waters, Alexandre Hinzpeter, Nicoletta Pedemonte   +25 more
wiley   +1 more source

Climate Emergency and Different Ways to Fail? The Fermi Paradox, the Simulation Hypothesis, Agency and Hope

Journal for the Theory of Social Behaviour, Volume 55, Issue 4, December 2025.
ABSTRACT Humanity seems stuck on different ways to fail to meet the challenge posed by a declared climate emergency and manifest problems of ecological breakdown. Rather than reprise these failures, we use the Fermi Paradox and simulation hypothesis to make a simple point about agency. The argument unfolds in two sections.
Jamie Morgan
wiley   +1 more source

New Arabic Records From Cairo on Supernovae 1181 and 1006

Astronomische Nachrichten, Volume 346, Issue 9, November 2025.
ABSTRACT The remnant of the historical supernova SN 1181 is under discussion: While the previously suggested G130.7+3.1 (3C58) appears too old (3000–5000 year), the unusual star IRAS00500+6713 with a surrounding nebula (Pa‐30) has an expansion age not inconsistent with a SN Iax explosion in ad 1181 under the assumption that neither acceleration nor ...
J. G. Fischer, H. Halm, R. Neuhäuser, D. L. Neuhäuser   +3 more
wiley   +1 more source

Candidate Members of the VMP/EMP Disk System of the Galaxy from the SkyMapper and SAGES Surveys

The Astrophysical Journal Supplement Series
Photometric stellar surveys now cover a large fraction of the sky, probe to fainter magnitudes than large-scale spectroscopic surveys, and are relatively free from the target selection biases often associated with such studies.
Jihye Hong, Timothy C. Beers, Young Sun Lee, Yang Huang, Yutaka Hirai, Jonathan Cabrera Garcia, Derek Shank, Shuai Xu, Haibo Yuan, Mohammad K. Mardini, Thomas Catapano, Gang Zhao, Zhou Fan, Jie Zheng, Wei Wang, Kefeng Tan, Jingkun Zhao, Chun Li   +17 more
doaj   +1 more source

JWST Imaging of the Closest Globular Clusters—VI. The Lowest‐Mass Objects in M 4 and the Galactic Bulge

Astronomische Nachrichten, Volume 346, Issue 9, November 2025.
ABSTRACT We present James Webb Space Telescope observations of M 4—the closest globular cluster—that probe the lower Main Sequence down to the hydrogen‐burning limit. The unveiled stellar sequence reaches much fainter luminosities than previously possible, revealing a few extremely red objects that are consistent with brown dwarfs as cool as Teff∼1000K$
L. R. Bedin, R. Gerasimov, A. Calamida, M. Libralato, M. Scalco, D. Nardiello, M. Griggio, D. Apai, J. Anderson, A. Bellini, A. Burgasser   +10 more
wiley   +1 more source

What Is Missing from the Local Stellar Halo?

The Astrophysical Journal
The Milky Way’s stellar halo, which extends to >100 kpc, encodes the evolutionary history of our Galaxy. However, most studies of the halo to date have been limited to within a few kiloparsecs of the Sun.
Katherine Sharpe, Rohan P. Naidu, Charlie Conroy   +2 more
doaj   +1 more source