Results 91 to 100 of about 405,217 (280)

Designing an Optimal LSST Deep Drilling Program for Cosmology with Type Ia Supernovae

open access: yesThe Astrophysical Journal Supplement Series, 2023
The Vera C. Rubin Observatory’s Legacy Survey of Space and Time (LSST) is forecast to collect a large sample of Type Ia supernovae (SNe Ia) expected to be instrumental in unveiling the nature of dark energy.
Philippe Gris   +10 more
doaj   +1 more source

Star Formation in the Hubble Deep Field North [PDF]

open access: yes, 2002
I am currently analyzing the emission line spectra of the approximately 600 galaxies from the sample of Cohen et al.
Cohen, Judith G.
core   +2 more sources

Tracing Galaxy Assembly: Tadpole Galaxies in the Hubble Ultra Deep Field [PDF]

open access: yes, 2005
In the Hubble Ultra Deep Field (HUDF) an abundance of galaxies is seen with a knot at one end plus an extended tail, resembling a tadpole. These "tadpole galaxies" appear dynamically unrelaxed--presumably in an early merging state--where tidal ...
A. N. Straughn   +7 more
core   +1 more source

High-redshift galaxies in the Hubble Deep Field- II. Colours and number counts [PDF]

open access: yes, 1998
We discuss the deep galaxy counts from the Hubble Deep Field (HDF) imaging survey. At faint magnitudes, the slope of the differential number–magnitude relation is flatter than 0.2 in all four HDF bandpasses.
L. Pozzetti   +5 more
semanticscholar   +1 more source

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

open access: yesLaser &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   +11 more
wiley   +1 more source

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

open access: yesPerspectives 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

Ultradeep Near-Infrared ISAAC Observations of the Hubble Deep Field South: Observations, Reduction, Multicolor Catalog, and Photometric Redshifts [PDF]

open access: yes, 2002
We present deep near-infrared (NIR) Js-, H-, and Ks-band ISAAC imaging of the Wide Field Planetary Camera 2 (WFPC2) field of the Hubble Deep Field South (HDF-S).
I. Labbé   +12 more
semanticscholar   +1 more source

The Next Generation Deep Extragalactic Exploratory Public (NGDEEP) Survey

open access: yesThe Astrophysical Journal Letters
We present the Next Generation Deep Extragalactic Exploratory Public (NGDEEP) Survey, a deep slitless spectroscopic and imaging Cycle 1 JWST treasury survey designed to constrain feedback mechanisms in low-mass galaxies across cosmic time. NGDEEP targets
Micaela B. Bagley   +47 more
doaj   +1 more source

HUDF Lithograph: The Hubble Ultra Deep Field Lithograph [PDF]

open access: yes, 2008
This lithograph shows the deepest visible light observation of the early universe. In contrast to the image’s harvest of classic spiral and elliptical galaxies, there are a number of oddball galaxies littering the field. Some look like toothpicks; others

core  

Reconstructing Galaxy Spectral Energy Distributions from Broadband Photometry [PDF]

open access: yes, 1999
We present a novel approach to photometric redshifts, one that merges the advantages of both the template fitting and empirical fitting algorithms, without any of their disadvantages.
A. J. Connolly   +5 more
core   +2 more sources

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