Results 181 to 190 of about 420,801 (268)

Discovery and Initial Investigation of a New Low Surface Brightness Planetary Nebula Candidate at High Galactic Latitude

Astronomische Nachrichten, Volume 347, Issue 3, March 2026.
ABSTRACT Planetary nebulae represent a late evolutionary phase of low‐ to intermediate‐mass stars. In this article, we present the serendipitous discovery of a previously unknown, faint potential Galactic planetary nebula (PN) in the constellation Camelopardalis, identified during a survey‐inspection, aiming at the detection of dwarf companions of the ...
W. E. Celnik, P. Köchling, S. Kotov, J. Kozok, Y. Galata, L. Magrini, A. Moiseev, M. Nischang, C. Reese, P. Remmel, P. Riepe, T. Zilch, K. Werner   +12 more
wiley   +1 more source

Accurate geometric albedo, shape, and size of Hi'iaka from a stellar occultation. [PDF]

Nat Commun
Fernández-Valenzuela E, Ortiz JL, Holler BJ, Sicardy B, Rommel FL, Vara-Lubiano M, Morales N, Vachier F, Desmars J, Kretlow M, Vieira-Martins R, Jehin E, Ferrais M, Santos-Sanz P, Rustamkulov Z, de la Vega A, Warner E, Benkhaldoun Z, Kamin R, Ryan A, Earls B, Conti D, de Wit J, Burdanov A, Francini R, Langill P, Morales R, Fraser W, Kiss C, Pál A, Souami D, Lecacheux J, Braga-Ribas F, Duffard R, Alvarez-Candal A, Benedetti-Rossi G, Morgado B, Camargo JIB, Júnior ARG, Assafin M, Aissa DB, Grigahcene Z, Buie MW, Licandro J, Alarcon MR, Serra-Ricart M, Castro-Tirado A, Fernandez-Garcia EJ, Iglesias-Marzoa R, Galindo-Guil FJ, González H, Gonçalves R, Rengstorf A, Flynn R, Olsen A, Hanna B, Barnes J, A'Hearn JA, Kreyche SM, Miller WJ, Mortensen LE, Gibson TC, Walker G, Stolle-McAllister G, Feiden GA, Froetschel J, Steel S, Encardes D, Fisher RS, Luken A, Holcomb E, Caton D, Dunford B, Monin D.   +73 more
europepmc   +1 more source

Searching for Rotational X‐Ray Modulation on TIC 277539431

Astronomische Nachrichten, Volume 347, Issue 3, March 2026.
ABSTRACT TIC 277539431, a fast rotating M7 dwarf, was detected to host the highest latitude flare to date at 81°$$ {81}^{{}^{\circ}} $$. Magnetic activity like stellar flares occurring at high latitude indicate occurrence of coronal loops at these latitudes on fully‐convective M dwarfs. In contrast, sunspots usually occur below 30°$$ {30}^{{}^{\circ}} $
Desmond Dsouza, Katja Poppenhäger, Ekaterina Ilin   +2 more
wiley   +1 more source

Large-amplitude variability driven by giant dust storms on a planetary-mass companion. [PDF]

Sci Adv
Tan X, Zhang X, Marley MS, Zhou Y, Lew BWP, Miles BE, Batalha NE, Biller BA, Chauvin G, Hinkley S, Hoch KKW, Manjavacas E, Metchev S, Petrus S, Rickman E, Skemer A, Suárez G, Sutlieff BJ, Vos JM, Whiteford N.   +19 more
europepmc   +1 more source

The Bochum Survey of the Southern Galactic Disk: III. Complete Data Release

Astronomische Nachrichten, Volume 347, Issue 3, March 2026.
ABSTRACT The Southern Galactic Disk Survey (GDS) monitored a mosaic of 268 fields along a 6°$$ {6}^{{}^{\circ}} $$‐wide stripe in the southern Galactic disk with simultaneous observations in r′$$ {r}^{\prime } $$ and i′$$ {i}^{\prime } $$ (7m≲r′,i′≲18m$$ {7}^{\mathrm{m}}\lesssim {r}^{\prime },{i}^{\prime}\lesssim {18}^{\mathrm{m}} $$) from September ...
Julia Blex, Moritz Hackstein, Christian Westhues, Michael Ramolla, Markus Demleitner, Dominik J. Bomans, Kerstin Weis, Christofer Fein, Rolf Chini   +8 more
wiley   +1 more source

Electron recombination of rotationally cold D₂H⁺ ions. [PDF]

Nat Commun
Znotins A, Faure A, Greene CH, Grieser M, Grussie F, Isberner LW, Kálosi Á, Kokoouline V, Müll D, Paul D, Pezzella M, Savin DW, Schippers S, Tennyson J, Wolf A, Novotný O, Kreckel H.   +16 more
europepmc   +1 more source

Suprathermal Soliton Solutions to Nonlinear Schrödinger Equation

Contributions to Plasma Physics, Volume 66, Issue 3, March 2026.
ABSTRACT Maxwell distributions are very difficult to find in the low‐pressure environment far away the Earth atmosphere, permeated by high temperatures, various types of radiation, highly energetic particles, space debris, and subjected to microgravity, presenting crucial challenges for spacecraft design and operations, and affecting astronaut's health.
F. E. M. Silveira, M. H. Benetti, I. L. Caldas   +2 more
wiley   +1 more source

Fusion yield enhancement via secondary beam-target reactions in laser-cluster experiments. [PDF]

Sci Rep
Sim J, Lee S, Kim HI, Noh Y, Song J, Song C, Won J, Bang W.   +7 more
europepmc   +1 more source

SegRef3D: A Versatile Open‐Source Platform for Artificial Intelligence‐Assisted Segmentation and Three‐Dimensional Reconstruction in Morphological Research

International Journal of Imaging Systems and Technology, Volume 36, Issue 2, March 2026.
SegRef3D is an open‐source GUI that integrates AI‐powered segmentation tools to enable streamlined workflows for 3D reconstruction. It supports 3D STL export with built‐in volume measurement and provides a versatile platform for integrative morphological and histological analysis. ABSTRACT Accurate and efficient image segmentation is crucial in anatomy,
Satoru Muro, Takuya Ibara, Akimoto Nimura, Keiichi Akita   +3 more
wiley   +1 more source

Bias and Fairness in Radiomics: A Comparative Analysis of Machine Learning Models on Four Oncology Datasets

International Journal of Imaging Systems and Technology, Volume 36, Issue 2, March 2026.
ABSTRACT Radiomics, the practice of mining quantitative features from medical imaging, has gained increasing popularity in diagnosing and treating cancer. However, clinical deployment and adoption of radiomics tools in real‐world practice remain limited. To increase trust in radiomics models, one of the main remaining challenges is ensuring fairness by
Esmeralda Ruiz Pujadas, Jerónimo Hernández‐González, Vien Ngoc Dang, Marina Camacho, Karim Lekadir, Martijn P. A. Starmans   +5 more
wiley   +1 more source