Results 31 to 40 of about 2,784 (183)

Characterization of the Outer Uranian Rings in the Visual and Near‐IR Using Keck, JWST, and HST Observations

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract We present observations of the Uranian outer ring system at near‐infrared and visible wavelengths. Observations with the Keck Telescope were taken in July‐August 2007 at 2.12 and 1.63 μm, when the ring plane was almost edge‐on (ring opening angle B=0.62 $B=0.62$–0.24° ${}^{\circ}$). These data showed, for the first time, the μ ring at infrared
Imke de Pater, Mark R. Showalter, Matt M. Hedman, Heidi B. Hammel, Mike Roman, Leigh N. Fletcher, Maryame El Moutamid, Damya Souami   +7 more
wiley   +1 more source

JWST Twitter Bender

, 2022
I went on a bit of a twitter bender yesterday about the early claims about high mass galaxies at high redshift, which went on long enough I thought I should share it here.
openaire   +1 more source

ULTIMATE Deblending. I. A 50-band Ultraviolet to Mid-infrared Photometric Catalog Combining Space- and Ground-based Data in the JWST/PRIMER Survey

The Astrophysical Journal Supplement Series
Our understanding of the early Universe has long been limited by biased galaxy samples selected through various color criteria. With deep JWST infrared imaging, mass-complete galaxy samples can now be studied up to z  ∼ 8 for the first time.
Hanwen Sun, Tao Wang, Ke Xu, David Elbaz, Emiliano Merlin, Cheng Cheng, Emanuele Daddi, Shuowen Jin, Wei-hao Wang, Longyue Chen, Adriano Fontana, Zhen-Kai Gao, Jiasheng Huang, Benjamin Magnelli, Valentina Sangalli, Yijun Wang, Tiancheng Yang, Yuheng Zhang, Luwenjia Zhou   +18 more
doaj   +1 more source

Modeling Wind‐Driven Waves on Other Planets: Applications to Mars, Titan, and Exoplanets

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract Waves could exist on any planet with sustained winds and stable surface liquids. However, differences in atmospheres, liquids, and gravity confound efforts to extend Earth‐based empirical wave models to other planetary environments. We adapted a physics‐based numerical wave model to study how planetary conditions affect the growth of waves. We
Una G. Schneck, Charlene E. Detelich, Milan Curcic, Andrew D. Ashton, Alexander G. Hayes, J. Taylor Perron   +5 more
wiley   +1 more source

Steady Collapse of Uranus' Exosphere After 1998 to the Present Decade

Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract Uranus' thermospheric temperature decreased from ∼800K in 1986 to ∼450K in 2022 as determined from observations of H3+ and H2 infrared emissions. Spitzer 2007 lower atmosphere observations do not emulate this cooling trend. Here we show that the atomic H Lyman ⍺ emission from the disk of Uranus observed by HST from 2011 to 2022 are not ...
D. Bhattacharyya, J. T. Clarke, P. Stephenson, T. Koskinen, J.‐Y. Chaufray, L. Moore, H. Melin   +6 more
wiley   +1 more source

JWST

Bulletin of the American Astronomical Society, 2019
A public deep and wide science enabling survey will be needed to discover these black holes and supernovae, and to cover the area large enough for cosmic infrared background to be reliably studied. This enabling survey will find a large number of other transients and enable supernova cosmology up to z 5.
Wang, Lifan, Mould, J., Baade, D., Baron, E., Bromm, V., Cooke, J., Fan, X., Foley, R., Fruchter, A., Gal-Yam, A., Heger, A., Höflich, P., Howell, D. A., Kashlinsky, A., Koekemoer, A., Mather, J., Mazzali, P., Pacucci, F., Patat, F., Pian, E., Perlmutter, S., Rest, A., Rubin, D., Sand, D., Stubbs, C., Suntzeff, N., Wang, X. -F., Whalen, D., Wheeler, J. C., Yue, B.   +29 more
openaire   +1 more source

Image reconstruction with the JWST interferometer

Publications of the Astronomical Society of Australia
Abstract Flying on board the James Webb Space Telescope (JWST) above Earth’s turbulent atmosphere, the Aperture Masking Interferometer (AMI) on the NIRISS instrument is the highest-resolution infrared interferometer ever placed in space. However, its performance was found to
Max Charles, Louis Desdoigts, Benjamin Pope, Peter Tuthill, Dori Blakely, Doug Johnstone, Shrishmoy Ray, K. E. Saavik Ford, Barry McKernan, Anand Sivaramakrishnan   +9 more
openaire   +3 more sources

Little red dots: the assembly of early supermassive black holes in the JWST Era

Frontiers in Astronomy and Space Sciences
Since the launch of the James Webb Space Telescope (JWST) in late 2021, our understanding of high-redshift objects has faced several upheavals. JWST has discovered much more massive galaxies and supermassive black holes (SMBH) than cosmological models ...
David D. Vaida, Ryan Jeffrey Farber
doaj   +1 more source

Short‐Term Variability of Jupiter's Satellite Footprints as Spotted by JWST

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract We present the main Alfvén wing (MAW) spots of Io and Europa as observed by the Near‐Infrared Spectrograph onboard the James Webb Space Telescope. These auroral footprint features have been measured previously, but only in emission. Here, the derived ionospheric H3+ ${\mathrm{H}}_{3}^{+}$ emission, temperature and column density are reported ...
Katie L. Knowles, H. Melin, T. S. Stallard, L. Moore, J. O’Donoghue, C. Schmidt, J. R. Szalay, P. I. Tiranti, K. Roberts, R. E. Johnson, E. M. Thomas   +10 more
wiley   +1 more source

Using Python with Smoke and JWST Mirrors [PDF]

Proceedings of the Python in Science Conference, 2010
We will describe how the Space Telescope Science Institute is using Python in support of the next large space telescope, the James Webb Space Telescope (JWST). We will briefly describe the 6.5 meter segmented-mirror infra-red telescope, currently planned for a 2014 launch, and its science goals.
Warren J. Hack, Perry Greenfield, Babak Saif, Bente Eegholm   +3 more
openaire   +1 more source