Results 51 to 60 of about 24,980 (214)

Detecting gravitationally lensed population III galaxies with the Hubble Space Telescope and the James Webb Space Telescope

, 2012
Small galaxies consisting entirely of population III (pop III) stars may form at high redshifts, and could constitute one of the best probes of such stars.
Abel, Adi Zitrin, Beckwith, Bouwens, Bouwens, Bradač, Bradley, Bradley, Bromm, Bromm, Cai, Claes-Erik Rydberg, Clark, Daniel Schaerer, Dayal, Dijkstra, Erik Zackrisson, Ferland, Gardner, Greif, Greif, Greif, Greif, Greif, Greif, Göran Östlin, Hall, Hosokawa, Inoue, Johnson, Kroupa, Lehnert, Limousin, Lucia Guaita, Maizy, Mesinger, Michele Trenti, Oesch, Pawlik, Pelló, Postman, Raiter, Ricotti, Rydberg, Safranek-Shrader, Salvaterra, Scannapieco, Schaerer, Schaerer, Schaerer, Schenker, Stacy, Stiavelli, Tegmark, Tina Ström, Tom Broadhurst, Tornatore, Trenti, Trenti, Weinmann, Whalen, Wise, Wyithe, Yoshida, Zackrisson, Zackrisson, Zackrisson, Zackrisson, Zheng, Zitrin, Zitrin, Zitrin   +71 more
core   +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

Faint White Dwarf Flux Standards: Data and Models

The Astronomical Journal
Fainter standard stars are essential for the calibration of larger telescopes. This work adds to the calibration spectra (CALSPEC) database of 19 faint white dwarfs (WDs) with all-sky coverage and V magnitudes between 16.5 and 18.7.
Ralph C. Bohlin, Susana Deustua, Gautham Narayan, Abhijit Saha, Annalisa Calamida, Karl D. Gordon, Jay B. Holberg, Ivan Hubeny, Thomas Matheson, Armin Rest   +9 more
doaj   +1 more source

James Webb Space Telescope Project (JWST) Overview [PDF]

, 2008
This presentation provides an overview of the James Webb Space Telescope (JWST) Project. The JWST is an infrared telescope designed to collect data in the cosmic dark zone.
Dutta, Mitra
core   +1 more source

Finding high-redshift dark stars with the James Webb Space Telescope

, 2010
The first stars in the history of the Universe are likely to form in the dense central regions of 10^5-10^6 Msolar cold dark matter halos at z=10-50. The annihilation of dark matter particles in these environments may lead to the formation of so-called ...
Broadhurst, Tom, Edvardsson, Bengt, Gondolo, Paolo, Iocco, Fabio, Rydberg, Claes-Erik, Scott, Pat, Sivertsson, Sofia, Zackrisson, Erik, Zitrin, Adi, Östlin, Göran   +9 more
core   +3 more sources

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

Goldeneye: James Webb Space Telescope [PDF]

Chinese Science Bulletin, 2022
Wei Zheng, Linhua Jiang
openaire   +1 more source

Science with the James Webb space telescope [PDF]

SPIE Proceedings, 2006
The science objectives of the James Webb Space Telescope fall into four themes. The End of the Dark Ages: First Light and Reionization theme seeks to identify the first luminous sources to form and to determine the ionization history of the universe. The Assembly of Galaxies theme seeks to determine how galaxies and the dark matter, gas, stars, metals,
Gardner, Jonathan P., Mather, John C., Clampin, Mark, Doyon, Rene, Greenhouse, Matthew A., Hammel, Heidi B., Hutchings, John, Jakobsen, Peter, Lilly, Simon J., Long, Knox S., Lunine, Jonathan I., McCaughrean, Mark J., Mountain, Matt, Nella, John, Rieke, George H., Rieke, Marcia J., Rix, Hans-Walter, Smith, Eric P., Sonneborn, George, Stiavelli, Massimo, Stockman, H. S., Windhorst, Rogier A., Wright, Gillian S.   +22 more
openaire   +1 more source

Status of the James Webb Space Telescope [PDF]

, 2011
The James Webb Space Telescope (JWST) is a large aperture (6.5 meter), cryogenic space telescope with a suite of near and mid-infrared instruments covering the wavelength range of 0.6 J,Jm to 28 J,Jm.
Champin, Mark
core   +1 more source

Finding Core Collapse Supernova from the Epoch of Reionization Behind Cluster Lenses

, 2013
Current surveys are underway to utilize gravitational lensing by galaxy clusters with Einstein radii >35" in the search for the highest redshift galaxies.
Loeb, Abraham, Pan, Tony
core   +1 more source