Results 31 to 40 of about 405,217 (280)

Inflationary quantum dynamics and backreaction using a classical-quantum correspondence

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
We study inflationary dynamics using a recently introduced classical-quantum correspondence for investigating the backreaction of a quantum mechanical degree of freedom to a classical background. Using specifically a coupled Einstein–Klein–Gordon system,
Reginald Christian Bernardo
doaj   +1 more source

JEMS: A Deep Medium-band Imaging Survey in the Hubble Ultra Deep Field with JWST NIRCam and NIRISS

open access: yesThe Astrophysical Journal Supplement Series, 2023
We present JWST Extragalactic Medium-band Survey, the first public medium-band imaging survey carried out using JWST/NIRCam and NIRISS. These observations use ∼2 and ∼4 μ m medium-band filters (NIRCam F182M, F210M, F430M, F460M, F480M; and NIRISS F430M ...
Christina C. Williams   +34 more
doaj   +1 more source

A NOEMA Molecular Line Scan of the Hubble Deep Field North: Improved Constraints on the CO Luminosity Functions and Cosmic Density of Molecular Gas

open access: yesThe Astrophysical Journal, 2023
We present measurements of the CO luminosity functions (LFs) and the evolution of the cosmic molecular gas density out to z ∼ 6 based on an 8.5 arcmin ^2 spectral scan survey at 3 mm of the iconic Hubble Deep Field North (HDF-N) observed with the ...
Leindert A. Boogaard   +11 more
doaj   +1 more source

HIGH-REDSHIFT GALAXIES IN THE HUBBLE DEEP FIELD : COLOUR SELECTION AND STAR FORMATION HISTORY TO Z 4 [PDF]

open access: yes, 1996
The Lyman decrement associated with the cumulative effect of H I in QSO absorption systems along the line of sight provides a distinctive feature for identifying galaxies at z ≳ 2.5.
P. Madau   +5 more
semanticscholar   +1 more source

The MUSE Ultra Deep Field (MUDF). III. Hubble Space Telescope WFC3 Grism Spectroscopy and Imaging

open access: yesThe Astrophysical Journal Supplement Series, 2023
We present extremely deep Hubble Space Telescope (HST) Wide Field Camera 3 (WFC3) observations of the MUSE Ultra Deep Field. This unique region of the sky contains two quasars at z ≈ 3.22 that are separated by only ∼500 kpc, providing a stereoscopic view
Mitchell Revalski   +20 more
doaj   +1 more source

The Hubble Deep Field: Observations, data reduction, and galaxy photometry [PDF]

open access: yes, 1996
The Hubble Deep Field (HDF) is a Director's Discretionary program on HST in Cycle 5 to image an undistinguished field at high Galactic latitude in four passbands as deeply as reasonably possible.
Robert E. Williams, the Hdf team
semanticscholar   +1 more source

Measuring and modelling the redshift evolution of clustering: the Hubble Deep Field North [PDF]

open access: yes, 1999
ABSTRA C T The evolution of galaxy clustering from za 0t oz . 4:5 is analysed using the angular correlation function and the photometric redshift distribution of galaxies brighter than IAB < 28:5 in the Hubble Deep Field North.
S. Arnouts   +6 more
semanticscholar   +1 more source

Varstrometry for Off-nucleus and Dual Subkiloparsec AGN (VODKA). SDSS J1608+2716: A Subarcsecond Quadruply Lensed Quasar at z = 2.575

open access: yesThe Astrophysical Journal Letters, 2023
We report Hubble Space Telescope (HST) Wide Field Camera 3 deep IR (F160W) imaging of SDSS J1608+2716. This system, located at a redshift of z = 2.575, was recently reported as a triple-quasar candidate with subarcsecond separations (∼0.″25) based on ...
Junyao Li   +7 more
doaj   +1 more source

Caltech Faint Galaxy Redshift Survey. X. A Redshift Survey in the Region of the Hubble Deep Field North [PDF]

open access: yes, 1999
A redshift survey has been carried out in the region of the Hubble Deep Field North using the Low Resolution Imaging Spectrograph (LRIS) at the Keck Observatory.
J. Cohen   +7 more
semanticscholar   +1 more source

A deep ALMA image of theHubble Ultra Deep Field [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2016
26 pages, 15 figures, updated to match version accepted for publication in ...
Dunlop, J.S.   +38 more
openaire   +9 more sources

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