Results 61 to 70 of about 52,385 (210)

H i Observations of Giant Low Surface Brightness Galaxies

The Astrophysical Journal
Giant low surface brightness (gLSB) galaxies are galaxies with extremely extended, faint, optical disks over 50 kpc in radius and have high total masses, which can reach 10 ^12 M _⊙ .
Philip Lah, Nikhil Arora, Ivan Yu. Katkov, Joseph D. Gelfand, Anna S. Saburova, Igor V. Chilingarian, Ivan Gerasimov, Damir Gasymov   +7 more
doaj   +1 more source

Gas-rich, Field Ultra-diffuse Galaxies Host Few Gobular Clusters

The Astrophysical Journal Letters, 2022
We present Hubble Space Telescope imaging of 14 gas-rich, low-surface-brightness galaxies in the field at distances of 25–36 Mpc, with mean effective radii and g -band central surface brightnesses of 1.9 kpc and 24.2 mag arcsec ^−2 .
Michael G. Jones, Ananthan Karunakaran, Paul Bennet, David J. Sand, Kristine Spekkens, Burçin Mutlu-Pakdil, Denija Crnojević, Steven Janowiecki, Lukas Leisman, Catherine E. Fielder   +9 more
doaj   +1 more source

The stellar disk thickness of LSB galaxies

, 2004
We present surface photometry results for a sample of eleven edge-on galaxies observed with the 6m telescope at the Special Astrophysical Observatory (Russia).
Barteldrees A., Beijersbergen M., D. Bizyaev, de Blok W. J. G., de Grijs R., de Jong R., Holley-Bockelmann J. K., Karachentsev I., Karachentsev I., Pfenniger D., S. Kajsin, van der Kruit P., Xilouris E. M., Xilouris E. M., Zasov A., Zwaan M.   +15 more
core   +1 more source

The dependence of HII region properties on global and local surface brightness within galaxy discs [PDF]

, 2008
Using B, R, and H-alpha images of roughly equal-sized samples of low surface brightness (LSB) and high surface brightness (HSB) galaxies (~40 galaxies apiece), we have explored the dependence of HII region properties on local and global disc surface ...
Barnes, Blanton, Bothun, Bothun, Bothun, Bruzual, Calzetti, de Blok, de Blok, de Blok, Diaz, Elmegreen, Freeman, G. D. Bothun, Helmboldt, Helmboldt, Helmboldt, Impey, J. F. Helmboldt, K. O'Neil, Kennicutt, Kraan-Korteweg, M. S. Oey, Matthews, Matthews, McGaugh, McGaugh, McGaugh, Mihos, O'Neil, O'Neil, O'Neil, O'Neil, O'Neil, Oey, Oey, Osterbrock, R. A. M. Walterbos, Salpeter, Schneider, Schombert, Schommer, Scoville, Scowen, Smith, Thilker, Thilker, Tremonti, Tully, von Hippel, York   +50 more
core   +1 more source

Germanium‐Based Mid‐Infrared Integrated Photonics

Laser &Photonics Reviews, EarlyView.
The mid‐infrared (mid‐IR) spectral range is a part of the electromagnetic spectrum in which most of the molecules have vibrational and rotational resonances. Photonics integration in this wavelength range have thus seen a burst of interest in the recent years, mainly driven by applications related with the detection of chemical and biological ...
Delphine Marris‐Morini, Goran Z. Mashanovich, Milos Nedeljkovic, Carlos Alonso‐Ramos, Laurent Vivien, Jacopo Frigerio, Giovanni Isella   +6 more
wiley   +1 more source

Estimating the Oblateness of Dark Matter Halos Using Neutral Hydrogen Velocity Dispersion

The Astrophysical Journal Letters, 2023
We derive the oblateness parameter q of the dark matter halo of a sample of gas-rich, face-on disk galaxies. We have assumed that the halos are triaxial in shape but their axes in the disk plane ( a and b ) are equal, so that q = c / a measures the halo ...
Mousumi Das, Roger Ianjamasimanana, Stacy S. McGaugh, James Schombert, K. S. Dwarakanath   +4 more
doaj   +1 more source

Survey on AI‐Enabled Computer Vision Technologies and Applications for Space Robotic Missions

Journal of Field Robotics, EarlyView.
ABSTRACT This survey provides a comprehensive overview of recent advancements and challenges in Artificial Intelligence (AI)‐enabled computer vision (CV) techniques for space robotic missions, spanning critical phases such as Entry, Descent, and Landing (EDL), orbital operations, and planetary surface exploration.
Maciej Quoos, Steven Kay, Julia Wajoras, Robert Field, Evridiki V. Ntagiou, Fakher Mohammad, Yang Gao   +6 more
wiley   +1 more source

Advances in cardiac devices and bioelectronics augmented with artificial intelligence

The Journal of Physiology, EarlyView.
Abstract figure legend Interfaces between the human heart, diagnostic bioelectronics, artificial intelligence, and clinical care. From left to right: Human heart and biosensor interface; representative waveforms of common diagnostic bioelectronic sensing modalities.
Charles Stark, Eric Rytkin, Andrei Alexandru Mircea, Igor R. Efimov   +3 more
wiley   +1 more source

Cowbirds use conspecific social information to detect host nests in the wild

Ibis, Volume 168, Issue 2, Page 799-804, April 2026.
Recent work shows that hosts of avian brood parasites use social information to increase egg rejection rates, but fewer studies explore how parasites themselves use such information to detect host nests in the wild. To determine whether wild Brown‐headed Cowbirds Molothrus ater use social information to detect host nests, we measured how individual ...
Omar J. Morosse, Leah E. Pistone, Daniel Hanley   +2 more
wiley   +1 more source

Programming Next‐Generation Synthetic Biosensors by Genetic Circuit Design

Advanced Science, Volume 13, Issue 14, 9 March 2026.
Synthetic biology enables genetic circuit‐based biosensing to detect diverse targets, process signals, and transduce them into readable outputs or intracellular regulatory activities. However, field deployment and real‐world application of such synthetic biosensors face considerable challenges in sensitivity, specificity, speed, stability, and ...
Yuanli Gao, Cheng Huang, Jiaxuan Deng, Lei Wang, Baojun Wang   +4 more
wiley   +1 more source