Results 71 to 80 of about 24,980 (214)

An Investigation into the Selection and Colors of Little Red Dots and Active Galactic Nuclei

The Astrophysical Journal
Recently, a large number of compact sources at z  > 4 with blue UV slopes and extremely red rest-frame optical slopes have been found in James Webb Space Telescope (JWST) extragalactic surveys. As a subsample of these sources, commonly called “little red
Kevin N. Hainline, Roberto Maiolino, Ignas Juodžbalis, Jan Scholtz, Hannah Übler, Francesco D’Eugenio, Jakob M. Helton, Yang Sun, Fengwu Sun, Brant Robertson, Sandro Tacchella, Andrew J. Bunker, Stefano Carniani, Stephane Charlot, Emma Curtis-Lake, Eiichi Egami, Benjamin D. Johnson, Xiaojing Lin, Jianwei Lyu, Pablo G. Pérez-González, Pierluigi Rinaldi, Maddie S. Silcock, Giacomo Venturi, Christina C. Williams, Christopher N. A. Willmer, Chris Willott, Junyu Zhang, Yongda Zhu   +27 more
doaj   +1 more source

Confirmation of a Non‐Transiting Planet in the Habitable Zone of the Nearby M Dwarf L 98‐59

Astronomische Nachrichten, Volume 347, Issue 2, February 2026.
ABSTRACT Only 40 exoplanetary systems with five or more planets are currently known. These systems are crucial for our understanding of planet formation and planet‐planet interaction. The M dwarf L 98‐59 has previously been found to show evidence of five planets, three of which are transiting.
Paul I. Schwarz, Stefan Dreizler, René Heller   +2 more
wiley   +1 more source

Comparing key compositional indicators in Jupiter with those in extra-solar giant planets [PDF]

, 2019
Spectroscopic transiting observations of the atmospheres of hot Jupiters around other stars, first with Hubble Space Telescope and then Spitzer, opened the door to compositional studies of exoplanets.
Bean, J., Beichman, C., Greene, T., Hammel, H. B., Lunine, J. I., Marley, M. S.   +5 more
core   +1 more source

Confirming Near- to Mid-infrared Photometrically Identified Obscured AGNs in the JWST Era

The Astrophysical Journal
We evaluate the underlying assumptions for the identification of active galactic nuclei (AGNs) through near- and mid-infrared photometry and spectral energy distribution (SED) fitting out to z ∼ 3.
George H. Rieke, Yang Sun, Jianwei Lyu, Christopher N. A. Willmer, Yongda Zhu, Pierluigi Rinaldi, Meredith A. Stone, Kevin N. Hainline, Pablo G. Pérez-González   +8 more
doaj   +1 more source

Hubble Space Telescope and James Webb Space Telescope [PDF]

Over the past 20 years the Hubble Space Telescope has revolutionized our understanding of the Universe. Most recently, the complete refurbishment of Hubble in 2009 has given new life to the telescope and the new science instruments have already produced ...
Straughn, Amber
core   +1 more source

Beyond Sight: Neuromorphic Synapses Triggered by Invisible Light

Small, Volume 22, Issue 10, 17 February 2026.
This review collects advancements in neuromorphic and optoelectronic devices, offering a structured analysis based on stimulus energy levels and architectural designs within the invisible spectrum. By categorizing recent research according to utilized wavelengths, specifically X‐ray, UV, and IR ranges, the study highlights diverse synaptic properties ...
Jisoo Park, Kyounghoon Kim, Eun Kwang Lee, Young‐Joon Kim, Hocheon Yoo   +4 more
wiley   +1 more source

The eJWST active galactic nucleus observation catalogue

Astronomy & Astrophysics
Context. The European Archive of the James Webb Space Telescope (eJWST) provides access to all data collected by the James Webb Space Telescope (JWST).
Lenk V., Labiano A., Circosta C., Alonso-Herrero A., Wylezalek D.   +4 more
doaj   +1 more source

Detectability of Local Group Dwarf Galaxy Analogues at High Redshifts

, 2015
The dwarf galaxies of the Local Group are believed to be similar to the most abundant galaxies during the epoch of reionization (z>6). As a result of their proximity, there is a wealth of information that can be obtained about these galaxies; however ...
Loeb, Abraham, Patej, Anna
core   +1 more source

Photoelectron Spectroscopy of the Phosphorus Monosulfide (PS) and Phosphorus Monoxide (PO) Radicals

Small Structures, Volume 7, Issue 1, January 2026.
Sketch of the experiment to measure the photo electron spectrum of the PS radical produced in situ with a mixture of PH3, H2S and F atoms. PO and PS radicals are the smallest units of phosphorus oxides and phosphorus sulfides, respectively, two rich families of refractory compounds widely employed in industrial and technological applications. These two
Pedro Recio, Jorge Alonso de la Fuente, Myriam Drissi, Niyazi Bulut, Jean Christophe Loison, Gustavo Garcia, Susana Gomez Carrasco, Cristina Sanz Sanz, Luis Bañares, Sonia Marggi Poullain, Alexandre Zanchet   +10 more
wiley   +1 more source

James Webb Space Telescope Studies of Dark Energy [PDF]

, 2010
The Hubble Space Telescope (HST) has contributed significantly to studies of dark energy. It was used to find the first evidence of deceleration at z=1.8 (Riess et al.
Gardner, Jonathan P., Mather, John C., Stiavelli, Massimo   +2 more
core   +1 more source