Results 131 to 140 of about 121,582 (238)

The Impact of the Sulfur Allotropes and Sulfur Hydrides on the Venus Cloud Chemistry

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Venus is home to vivid sulfur chemistry, with SO2 ${\text{SO}}_{2}$ as the major sulfur gas species and a global cloud layer between 47 and 70 km composed of H2SO4 ${\mathrm{H}}_{2}{\text{SO}}_{4}$ and H2 ${\mathrm{H}}_{2}$O. The chemistry in the clouds has been extensively studied with 1D models, but none is able to reproduce the three orders
Maxence Lefèvre, Franck Lefèvre, Anni Määttänen, Robert Skog, Benjamin Frandsen, Aurélien Stolzenbach, Ashwin Braude   +6 more
wiley   +1 more source

Infrared Colors of Small Serendipitously Found Asteroids in the UKIRT Hemisphere Survey

The Astronomical Journal
The UKIRT Hemisphere Survey covers the northern sky in the infrared from 0° to 60° decl. Current data releases include both J and K bands, with H -band data forthcoming. Here, we present a novel pipeline to recover asteroids from this survey data.
Samantha G. Morrison, Ryder H. Strauss, David E. Trilling, Andy J. López-Oquendo, Justice Bruursema, Frederick J. Vrba   +5 more
doaj   +1 more source

Far infrared observations of crab-like supernova remnants [PDF]

Using the Infrared Astronomy Satellite (IRAS) data, an investigation was begun of the far infrared properties of Crab-like supernova remnants and other synchrotron nebulae.
Becker, Robert H., Helfand, David J.
core   +1 more source

Saponite Bearing Material Excavated During the Formation of a Recent 25‐m‐Diameter Impact Crater in Southeastern Arabia Terra on Mars

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Mars Reconnaissance Orbiter's Compact Reconnaissance Imaging Spectrometer for Mars (CRISM), Context Imager (CTX), and High Resolution Imaging Science Experiment observations were analyzed for a 25‐m‐wide impact crater and associated ejecta deposits located in the dust‐covered Arabia Terra region.
R. E. Arvidson, J. G. Catalano, J. R. Christian, A. A. Fraeman, M. N. Hughes, A. L. Knight, W. B. McKinnon, R. V. Morris, S. L. Murchie, J. A. O’Sullivan, D. V. Politte, F. Seelos, M. J. Wolff, F. Zhou   +13 more
wiley   +1 more source

Spectral Response of SPHEREx

The Astrophysical Journal Supplement Series
The Spectro Photometer for the History of the Universe, Epoch of Reionization, and Ices Explorer (SPHEREx) is conducting the first all-sky near-infrared spectral survey spanning 0.75–5.0  μ m with resolving power R  ≈ 35–130.
Howard Hui, James J. Bock, Samuel Condon, C. Darren Dowell, Woong-Seob Jeong, Young-soo Jo, Phil M. Korngut, Kenneth Manatt, Chi Nguyen, Hien Nguyen, Stephen Padin, Sung-Joon Park, Jeonghyun Pyo, Yujin Yang, Matthew L. N. Ashby, Yoonsoo P. Bach, Tzu-Ching Chang, Yun-Ting Cheng, Yi-Kuan Chiang, Asantha Cooray, Brendan P. Crill, Ari J. Cukierman, Olivier Doré, Andreas L. Faisst, Joseph L. Hora, Jae Hwan Kang, BoMee Lee, Carey M. Lisse, Daniel C. Masters, Roberta Paladini, Zafar Rustamkulov, Volker Tolls, Michael W. Werner, Michael Zemcov   +33 more
doaj   +1 more source

Challenges in Simultaneous Microstructuring and Hyperdoping of Germanium with Ultrafast Laser

physica status solidi (a), Volume 223, Issue 8, 22 April 2026.
Femtosecond laser processing is explored as a single‐step route to microstructure and hyperdope germanium for extended infrared absorption. Comparative experiments with and without a Ti precursor reveal that Ge's shallow green light absorption and low thermal conductivity drive intense localized melting, evaporation, and redeposition. Post‐cleaning and
Dmytro Gnatyuk, Sara Hamed, Masoud Ebrahimzadeh, Hanchen Liu, Ville Vähänissi, Pekka Laukkanen, Hele Savin, Xiaolong Liu   +7 more
wiley   +1 more source

A Spectroscopic Analysis of the Ionizing Photon Production Efficiency in JADES and CEERS: Implications for the Ionizing Photon Budget

The Astrophysical Journal
We have used a combined sample of JADES and CEERS objects in order to constrain ionizing photon production efficiency ( ξ _ion ) from JWST/NIRSpec and JWST/NIRCam data. We examine 163 objects at 1.06 
Anthony Pahl, Michael W. Topping, Alice Shapley, Ryan Sanders, Naveen A. Reddy, Leonardo Clarke, Emily Kehoe, Trinity Bento, Gabe Brammer   +8 more
doaj   +1 more source

SALT's Venture into Near Infrared Astronomy with RSS-NIR [PDF]

Proceedings of SALT Science Conference 2015 — PoS(SSC2015), 2016
openaire   +1 more source

Lyα Profile Shape as an Escape-fraction Diagnostic at High Redshift

The Astrophysical Journal
While the shape of the Ly α profile is viewed as one of the best tracers of ionizing-photon escape fraction ( f _esc ) within low-redshift ( z ∼ 0.3) surveys of the Lyman continuum, this connection remains untested at high redshift. Here, we combine deep,
Anthony Pahl, Alice Shapley, Charles C. Steidel, Naveen A. Reddy, Yuguang Chen, Gwen C. Rudie   +5 more
doaj   +1 more source

Zonal Winds in Titan’s Middle Atmosphere from a Stellar Occultation Observed with Keck Adaptive Optics

The Planetary Science Journal
We present spatially resolved Keck/NIRC2 images of a stellar occultation by Titan on 2022 September 5 and compare them to predictions from concurrent Atacama Large Millimeter/submillimeter Array (ALMA) observations and a suite of general circulation ...
Theresa C. Marlin, Eliot F. Young, Katherine de Kleer, Martin Cordiner, Nicholas A. Lombardo, Imke de Pater, Juan M. Lora, Paul Corlies, Richard Cosentino, Conor Nixon, Sébastien Rodriguez, Alexander Thelen   +11 more
doaj   +1 more source