Results 41 to 50 of about 64,703 (265)

PROBES. I. A Compendium of Deep Rotation Curves and Matched Multiband Photometry

The Astrophysical Journal Supplement Series, 2022
We present the Photometry and Rotation Curve Observations from Extragalactic Surveys (PROBES) compendium of extended rotation curves for 3163 late-type spirals, with matching homogeneous multiband photometry for 1677 of them.
Connor Stone, Stéphane Courteau, Nikhil Arora, Matthew Frosst, Thomas H. Jarrett   +4 more
doaj   +1 more source

The extinction curve of the lensing galaxy of B1152+199 at z=0.44 [PDF]

, 2000
We present UBVRIz' photometry of the gravitational lens candidate CLASS B1152+119 obtained with the Nordic Optical Telescope. The two QSO components are resolved in the B, V, R, I and z' bands confirming the lensing nature of the system.
Burud, Ingunn, Hjorth, Jens, Toft, Sune
core   +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

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

Classifying Astronomical Transients Using Only Host Galaxy Photometry

The Astrophysical Journal, 2023
The Legacy Survey of Space and Time (LSST) at the Vera C. Rubin Observatory will discover tens of thousands of extragalactic transients each night. The high volume of alerts demands immediate classification of transient types in order to prioritize ...
Marina Kisley, Yu-Jing Qin, Ann Zabludoff, Kobus Barnard, Chia-Lin Ko   +4 more
doaj   +1 more source

Recent Star Formation in Sextans A

, 1998
We investigate the relationship between the spatial distributions of stellar populations and of neutral and ionized gas in the Local Group dwarf irregular galaxy Sextans A.
Aparicio A., Aparicio A., Bertelli G., Braun J. M., Daniel Puche, Dohm-Palmer R. C., Domgoergen H., Grebel E. K., Hoessel J. G., Noguchi M., Ohta K., Piotto G., Rhode K. L., Schuyler D. Van Dyk, Schwarz M. P., Skillman E. D., Tony Wong, Walker A. R.   +17 more
core   +2 more sources

Al‐Khadhaf: The first camera‐observed (H5–6) meteorite fall from Oman

Meteoritics &Planetary Science, Volume 61, Issue 3, Page 522-547, March 2026.
Abstract A fireball camera system installed in 2022 by the Oman Meteorite Monitoring Project (OMMP) as part of the Global Fireball Observatory (GFO) recorded a 3.2 s fireball on March 8, 2022 at 8:15 p.m. UTC. A meteoroid of 4 ± 2 kg entered the atmosphere at 14.0 km/s.
Anna Zappatini, Edwin Gnos, Beda A. Hofmann, Urs Eggenberger, Pascal M. Kruttasch, Frank Gfeller, Mohammad Tauseef, Ingo Leya, Hadrien A. R. Devillepoix, Eleanor K. Sansom, Martin Cupák, Sophie E. Deam, Thomas W. C. Stevenson, Peter Jenniskens, Sebastian Lindemann, Beat Booz, Muati. S. Al‐Muati, Abdulmunaim A. Al‐Zakwani, Hussain A. Al‐Ghafri   +18 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

PEARLS: Near-infrared Photometry in the JWST North Ecliptic Pole Time Domain Field

The Astrophysical Journal Supplement Series, 2023
We present near-infrared (NIR) ground-based Y , J , H , and K imaging obtained in the James Webb Space Telescope (JWST) North Ecliptic Pole Time Domain Field (NEP TDF) using the MMT-Magellan Infrared Imager and Spectrometer on the MMT.
Christopher N. A. Willmer, Chun Ly, Satoshi Kikuta, S. A. Kattner, Rolf A. Jansen, Seth H. Cohen, Rogier A. Windhorst, Ian Smail, Scott Tompkins, John F. Beacom, Cheng Cheng, Christopher J. Conselice, Brenda L. Frye, Anton M. Koekemoer, Nimish Hathi, Minhee Hyun, Myungshin Im, S. P. Willner, X. Zhao, Walter A. Brisken, F. Civano, William Cotton, Günther Hasinger, W. Peter Maksym, Marcia J. Rieke, Norman A. Grogin   +25 more
doaj   +1 more source

Stellar Archaeology in the Galactic halo with the Ultra-Faint Dwarfs: VI. Ursa Major II

, 2012
We present a B, V color-magnitude diagram (CMD) of the Milky Way dwarf satellite Ursa Major II (UMa II), spanning the magnitude range from V ~ 15 to V ~ 23.5 mag and extending over a 18 {\times} 18 arcmin2 area centered on the galaxy. Our photometry goes
Beers, T. C., Catelan, M., Clementini, G., Dall'Ora, M., Di Fabrizio, L., Greco, C., Kinemuchi, K., Kuehn, C. A., Marconi, M., Musella, I., Pritzl, B. J., Ripepi, V., Rodgers, C. T., Smith, H. A.   +13 more
core   +1 more source