Results 51 to 60 of about 5,906 (233)

Hubble Space Telescope observations of Baade's window [PDF]

Symposium - International Astronomical Union, 1993
This is a status report on a continuing program using the Hubble Space Telescope (HST) Wide–Field Camera (WFC) to probe the stellar population of the Galactic bulge to fainter magnitudes. We seek the mean age of the stars and the initial mass function (IMF).
W. A. Baum, R. M. Light, J. Holtzman, D. Hunter, T. Kreidl, E. J. O’Neil, E. J. Groth   +6 more
openaire   +1 more source

Advancing Localization Optoacoustic Tomography Using Experimentally‐Derived Effective Point Spread Functions

Laser &Photonics Reviews, Volume 19, Issue 24, December 17, 2025.
This study presents an improved technique for Localization Optoacoustic Tomography using experimentally‐derived effective point spread functions. The method significantly enhances sub‐pixel localization performance, with applicable potential to relatively under‐sampled scenarios and other imaging modalities, paving the way for new frontiers in super ...
Hongtong Li, Haiyang Zhan, Daniil Nozdriukhin, Lin Tang, Hongjing Cao, Rui Ma, Tingkai Yan, Luyuan Feng, Zheng You, Daniel Razansky, Xose Luis Dean‐Ben, Fei Xing   +11 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

Probing Ganymede’s Atmosphere with HST Lyα Images in Transit of Jupiter

The Planetary Science Journal, 2023
We report results from far-ultraviolet observations by the Hubble Space Telescope of Jupiter’s largest moon, Ganymede, transiting across the planet’s dayside hemisphere.
Lorenz Roth, Gregorio Marchesini, Tracy M. Becker, H. Jens Hoeijmakers, Philippa M. Molyneux, Kurt D. Retherford, Joachim Saur, Shane R. Carberry Mogan, Jamey R. Szalay   +8 more
doaj   +1 more source

A Small Pathbreaking Spacecraft: Giants of Space Research (Bernard Blake, Dieter Hovestadt, and Edward Stone)

Perspectives of Earth and Space Scientists, Volume 6, Issue 1, December 2025.
Abstract The Solar, Anomalous, and Magnetospheric Explorer (SAMPEX) mission launched in July 1992 was the first NASA “Small Explorer” project. It had the goal to show how space missions could be developed much more rapidly than had become the situation in the 1980s and 1990s.
D. N. Baker, G. M. Mason
wiley   +1 more source

A New Approach to Compiling Exoatmospheric Target Lists and Quantifying the Ground-based Resources Needed to Vet Them

The Astronomical Journal
Transiting exoplanet atmospheric characterization is currently in a golden age as dozens of exoplanet atmospheres are being studied by NASA’s Hubble and James Webb Space Telescopes.
Jennifer A. Burt, Robert T. Zellem, David R. Ciardi, Shubham Kanodia, Geoffrey Bryden, Tiffany Kataria, Kyle A. Pearson, Jessie L. Christiansen, Charles Beichman, B. J. Fulton, Mark Swain   +10 more
doaj   +1 more source

Harnessing the Hubble Space Telescope Archives: A Catalog of 21,926 Interacting Galaxies

The Astrophysical Journal, 2023
Mergers play a complex role in galaxy formation and evolution. Continuing to improve our understanding of these systems requires ever larger samples, which can be difficult (even impossible) to select from individual surveys.
David O’Ryan, Bruno Merín, Brooke D. Simmons, Antónia Vojteková, Anna Anku, Mike Walmsley, Izzy L. Garland, Tobias Géron, William Keel, Sandor Kruk, Chris J. Lintott, Kameswara Bharadwaj Mantha, Karen L. Masters, Jan Reerink, Rebecca J. Smethurst, Matthew R. Thorne   +15 more
doaj   +1 more source

A Hubble Space Telescope Imaging Survey of Low-redshift Swift-BAT Active Galaxies* [PDF]

, 2021
Minjin Kim, Aaron J. Barth, Luis C. Ho, Suyeon Son   +3 more
openalex   +1 more source

Rethinking “Prebiotic Chemistry”

Perspectives of Earth and Space Scientists, Volume 6, Issue 1, December 2025.
Abstract In origins‐of‐life research, the term “prebiotic chemistry” is commonly used to describe processes thought to be related to or required for the emergence of life. However, it suffers from several potential drawbacks that have caused the present group of authors to rethink their usage of the term.
Michael L. Wong, Madeline Christensen, Stuart Bartlett   +2 more
wiley   +1 more source

Echoes in the Noise: Posterior Samples of Faint Galaxy Surface Brightness Profiles with Score-based Likelihoods and Priors

The Astronomical Journal
Examining the detailed structure of galaxy populations provides valuable insights into their formation and evolution mechanisms. Significant barriers to such analysis are the nontrivial noise properties of real astronomical images and the point-spread ...
Alexandre Adam, Connor Stone, Connor Bottrell, Ronan Legin, Yashar Hezaveh, Laurence Perreaul-Levasseur   +5 more
doaj   +1 more source