Results 81 to 90 of about 833,890 (231)

A Catalog of 971 FR I Radio Galaxies from the FIRST Survey via Hybrid Deep Learning and Ridgeline Flux Density Distribution Analysis

open access: yesThe Astrophysical Journal Supplement Series
We present a catalog of 971 FR I radio galaxies (FR Is) identified from the Very Large Array Faint Images of the Radio Sky at Twenty centimeters (FIRST) survey.
Baoqiang Lao   +8 more
doaj   +1 more source

Solvent‐Guided Chiral Assemblies and Chemical Doping of OEG‐Functionalized Conjugated Polymers

open access: yesAdvanced Materials, Volume 38, Issue 45, 13 August 2026.
Solvent‐dependent aggregation pathways dictate whether conjugated polymers form chiral lyotropic liquid‐crystalline assemblies or achiral packed aggregates. Mapping solvent‐controlled β₁ and β2 states reveals that weaker backbone association favors β₁ aggregates and reorganizable twisted mesophases, whereas stronger backbone association favors β2 ...
Sanghyun Jeon   +10 more
wiley   +1 more source

Spitzer IRAC infrared colours of submillimetre-bright galaxies [PDF]

open access: yes, 2008
High-redshift submillimetre-bright galaxies identified by blank field surveys at millimetre and submillimetre wavelengths appear in the region of the Infra Red Array Camera (IRAC) colour–colour diagrams previously identified as the domain of luminous ...
David Hughes, ITZIAR ARETXAGA MENDEZ
core  

The ORCA‐TWIN qCMOS Experiment I. Science Case and Commissioning at Calar Alto Observatory

open access: yesAstronomische Nachrichten, Volume 347, Issue 7, August 2026.
ABSTRACT We describe a pilot study to explore a new generation of fast and low noise CMOS image sensors for time domain astronomy, using two remote telescopes with a baseline of 1635 km. The experiment involves direct imaging with novel qCMOS image sensor technology that combines fast readout with sub‐electron readout noise.
Martin M. Roth   +20 more
wiley   +1 more source

ISO Spectroscopy of Ultraluminous Infrared Galaxies

open access: yesAstrophysics and Space Science, 1999
Spectroscopy from the Infrared Space Observatory ISO has for the first timeprovided the sensitivity to exploit the diagnostic power ofmid-infrared fine structure lines and PAH features for the study ofultraluminous infrared galaxies (LIR >1012 L ⊙). We report on observations obtainedwith SWS, ISOPHOT-S, and the CVF option of ISOCAM.
Lutz, D   +7 more
openaire   +1 more source

An Indication of Gas Inflow in Clumpy Star-forming Galaxies near z ∼ 1: Lower Gas-phase Metallicities in Clumpy Galaxies Compared to Nonclumpy Galaxies

open access: yesThe Astrophysical Journal
Despite the ubiquity of clumpy star-forming galaxies at high-redshift, the origin of clumps are still largely unconstrained due to the limited observations that can validate the mechanisms for clump formation.
Visal Sok   +7 more
doaj   +1 more source

Photoresponsive MoS2‐Based Artificial Synaptic Transistor for Wavelength‐Dependent Physical Reservoir Computing

open access: yesSmall Structures, Volume 7, Issue 8, August 2026.
The illumination wavelength sets the relaxation timescale of persistent photoconductivity in a back‐gated MoS2 photonic synapse. Red, green, and blue light supply three distinct fading‐memory channels within a single device. Combining these spectral channels into one reservoir achieves best performance of a nonlinear time‐series prediction below that ...
Mingeun Park   +7 more
wiley   +1 more source

The evolution of galaxies in massive clusters [PDF]

open access: yes, 2007
We present a study of the evolution of galaxies in massive X-ray selected clusters across half the age of the Universe. This encompasses galaxies on the red sequence from the Brightest Cluster Galaxy (BCG) to the faint red population. We begin at the tip
Stott, John Philip, Stott, J. P.
core  

Ultraluminous Infrared Galaxies and the Origin of Quasars [PDF]

open access: yes, 1990
© Springer-Verlag Berlin Heidelberg 1990. This research was supported by grants from the National Science Foundation and the IRAS Extended Mission Program.
Sanders, D. B.   +2 more
openaire   +2 more sources

MAGAZ3NE: Confirming Dust Deficiency and Quiescent Nature of Ultramassive Galaxies at 3 < z < 4 with ALMA Observations

open access: yesThe Astrophysical Journal
A major challenge in identifying massive quiescent galaxies at z  > 3 is distinguishing truly passive systems from dust-obscured star-forming galaxies, as both populations exhibit similar red ultraviolet-to-near-infrared colors.
Wenjun Chang   +16 more
doaj   +1 more source

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