Results 31 to 40 of about 1,014 (183)

Feasibility Study for Application of Digitized Henize Mt. Wilson Michigan Southern Sky Hα$$ \boldsymbol{\alpha} $$ Survey Low‐Dispersive Spectral Plates for Searches for Anomalous and Highly Redshifted Objects

Astronomische Nachrichten, Volume 347, Issue 6, July 2026.
ABSTRACT The goal of this study is to confirm the feasibility of the use of digitized low dispersive MtWilson Michigan Southern Sky Hα$$ \alpha $$ survey astronomical photographic plates for modern astrophysical research. The detection of highly redshifted objects, such as early galaxies and quasars, is fundamental to understanding the universe's ...
Tauseef Ahmad Zafar, René Hudec, Marta Mara Merono Vidagany, Fehmi Mejri   +3 more
wiley   +1 more source

Stochastic 2-D Galaxy disk Evolution Models. Resolved Stellar Populations in the Galaxy M33

Open Astronomy, 2015
We improved the stochastic 2-D galaxy disk models (Mineikis & Vansevičius 2014a) by introducing enriched gas outflows from galaxies and synthetic color-magnitude diagrams of stellar populations.
Mineikis T., Vansevičius V.
doaj   +1 more source

Hidden No More: Spotlight on Tidal Disruption Events in Active Galactic Nuclei

Astronomische Nachrichten, Volume 347, Issue 5, June 2026.
ABSTRACT Tidal disruption events (TDEs) are typically discovered in previously quiescent galaxies. However, earlier studies have revealed a handful of TDEs occurring in pre‐existing active galactic nuclei (AGN). We discuss AT2019aalc, a promising TDE candidate in an AGN, and compare it to similar sources.
Patrik Milán Veres
wiley   +1 more source

Bayesian Posteriors with Stellar Population Synthesis on GPUs

The Open Journal of Astrophysics
Models of Stellar Population Synthesis (SPS) provide a predictive framework for the spectral energy distribution (SED) of a galaxy. SPS predictions can be computationally intensive, creating a bottleneck for attempts to infer the physical properties of ...
Georgios Zacharegkas, Andrew Hearin, Andrew Benson   +2 more
doaj   +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

One Galaxy Sample to Rule Them All: Halo Occupation Distribution Modeling of DES Year 3 Source Galaxies

The Astrophysical Journal
For the joint analysis of second-order weak-lensing and galaxy clustering statistics, so-called 3 × 2 analyses, the selection and characterization of optimal galaxy samples is a major area of research.
Andrés N. Salcedo, Tim Eifler, Peter Behroozi   +2 more
doaj   +1 more source

Surface photometry of shell galaxies

The Astrophysical Journal, 1986
We present CCD surface photometry in four passbands of shells around three bright elliptical galaxies, NGC 2865, NGC 3923 and NGC 5018. Colors, profiles across the shells, and the precise geometry of the shells are determined. The observations all favor a merger process as the origin of the shells, and the colors are consistent with those of a recently
B. P. Fort, J.-L. Prieur, D. Carter, S. J. Meatheringham, L. Vigroux   +4 more
openaire   +1 more source

Human Eye Visualization With an Attention Mechanism: Enhancing Flower Detection and Classification With Visual Attention and Photometric Principles Inspired by Human Vision

Engineering Reports, Volume 8, Issue 3, March 2026.
The graphical abstract illustrates a flower classification model relying on the human visual system. The model captures images, simulates visual attention and photometric perception, extracts features of shape and color, and classifies flowers by using an optimized neural network that enhances recognition accuracy by mimicking the human eye's focusing ...
Arpan Singh, C. K. Yogesh, Christy Jackson Joshua   +2 more
wiley   +1 more source

ULTIMATE Deblending. I. A 50-band Ultraviolet to Mid-infrared Photometric Catalog Combining Space- and Ground-based Data in the JWST/PRIMER Survey

The Astrophysical Journal Supplement Series
Our understanding of the early Universe has long been limited by biased galaxy samples selected through various color criteria. With deep JWST infrared imaging, mass-complete galaxy samples can now be studied up to z  ∼ 8 for the first time.
Hanwen Sun, Tao Wang, Ke Xu, David Elbaz, Emiliano Merlin, Cheng Cheng, Emanuele Daddi, Shuowen Jin, Wei-hao Wang, Longyue Chen, Adriano Fontana, Zhen-Kai Gao, Jiasheng Huang, Benjamin Magnelli, Valentina Sangalli, Yijun Wang, Tiancheng Yang, Yuheng Zhang, Luwenjia Zhou   +18 more
doaj   +1 more source

The S-PLUS Fornax Project (S+FP): Fornax-like clusters in cosmological hydrodynamical simulations

Astronomy & Astrophysics
Context. The Fornax cluster, the second-nearest rich galaxy cluster, constitutes a suitable laboratory to explore the evolution of galaxies in a dense environment.
Zenocratti L. J., Smith Castelli A. V., De Rossi M. E., Pallero D., Artale M. C., Haack R. F., Lopes A. R., Faifer F. R., Palma D., Humire P. K., Thainá-Batista J., Schoenell W., Ribeiro T., Kanaan A., Mendes de Oliveira C.   +14 more
doaj   +1 more source