26 research outputs found

    The JWST FRESCO Survey:Legacy NIRCam/Grism Spectroscopy and Imaging in the two GOODS Fields

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    We present the JWST cycle 1 53.8 h medium program FRESCO, short for 'First Reionization Epoch Spectroscopically Complete Observations'. FRESCO covers 62 arcmin2 in each of the two GOODS/CANDELS fields for a total area of 124 arcmin2 exploiting JWST's powerful new grism spectroscopic capabilities at near-infrared wavelengths. By obtaining ∌2 h deep NIRCam/grism observations with the F444W filter, FRESCO yields unprecedented spectra at R ∌1600 covering 3.8-5.0 ÎŒm for most galaxies in the NIRCam field of view. This setup enables emission line measurements over most of cosmic history, from strong PAH lines at z ∌0.2-0.5, to Pa α and Pa ÎČ at z ∌1-3, He i and [S iii] at z ∌2.5-4.5, H α and [N ii] at z ∌5-6.5, up to [O iii] and H ÎČ for z ∌7-9 galaxies. FRESCO's grism observations provide total line fluxes for accurately estimating galaxy stellar masses and calibrating slit-loss corrections of NIRSpec/MSA spectra in the same field. Additionally, FRESCO results in a mosaic of F182M, F210M, and F444W imaging in the same fields to a depth of ∌28.2 mag (5σ in 032 diameter apertures). Here, we describe the overall survey design and the key science goals that can be addressed with FRESCO. We also highlight several, early science results, including: spectroscopic redshifts of Lyman break galaxies that were identified almost 20 yr ago, the discovery of broad-line active galactic nuclei at z &gt; 4, and resolved Pa α maps of galaxies at z ∌1.4. These results demonstrate the enormous power for serendipitous discovery of NIRCam/grism observations.</p

    The JWST FRESCO Survey: Legacy NIRCam/Grism Spectroscopy and Imaging in the two GOODS Fields

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    We present the JWST Cycle 1 53.8hr medium program FRESCO, short for "First Reionization Epoch Spectroscopically Complete Observations". FRESCO covers 62 arcmin2^2 in each of the two GOODS/CANDELS fields for a total area of 124 arcmin2^2 exploiting JWST's powerful new grism spectroscopic capabilities at near-infrared wavelengths. By obtaining ~2 hr deep NIRCam/grism observations with the F444W filter, FRESCO yields unprecedented spectra at R~1600 covering 3.8 to 5.0 ÎŒ\mum for most galaxies in the NIRCam field-of-view. This setup enables emission line measurements over most of cosmic history, from strong PAH lines at z~0.2-0.5, to Paα\alpha and PaÎČ\beta at z~1-3, HeI and [SIII] at z~2.5-4.5, Hα\alpha and [NII] at z~5-6.5, up to [OIII] and HÎČ\beta for z~7-9 galaxies, and possibly even [OII] at z~10-12. FRESCO's grism observations provide total line fluxes for accurately estimating galaxy stellar masses and calibrating slit-loss corrections of NIRSpec/MSA spectra in the same field. Additionally, FRESCO results in a mosaic of F182M, F210M, and F444W imaging in the same fields to a depth of ~28.2 mag (5 σ\sigma in 0.32" diameter apertures). Together with this publication, the v1 imaging mosaics are released as high-level science products via MAST. Here, we describe the overall survey design and the key science goals that can be addressed with FRESCO. We also highlight several, early science results, including: spectroscopic redshifts of Lyman break galaxies that were identified almost 20 years ago, the discovery of broad-line active galactic nuclei at z>4, and resolved Paα\alpha maps of galaxies at z~1.4. These results demonstrate the enormous power for serendipitous discovery of NIRCam/grism observations. Given the wealth of ancillary data available in these fields, the zero-proprietary time FRESCO data is poised to enable a large amount of legacy science by the community.Comment: 11 pages, 11 figures; submitted to MNRAS; for more information on the survey and data releases, see http://jwst-fresco.astro.unige.ch

    The JWST FRESCO Survey: Legacy NIRCam/Grism Spectroscopy and Imaging in the two GOODS Fields

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    We present the JWST Cycle 1 53.8hr medium program FRESCO, short for “First Reionization Epoch Spectroscopically Complete Observations”. FRESCO covers 62 arcmin2 in each of the two GOODS/CANDELS fields for a total area of 124 arcmin2 exploiting JWST’s powerful new grism spectroscopic capabilities at near-infrared wavelengths. By obtaining ∌2hr deep NIRCam/grism observations with the F444W filter, FRESCO yields unprecedented spectra at R ∌ 1600 covering 3.8 to 5.0 ÎŒm for most galaxies in the NIRCam field-of-view. This setup enables emission line measurements over most of cosmic history, from strong PAH lines at z ∌ 0.2 − 0.5, to Paα and PaÎČ at z ∌ 1 − 3, HeI and [SIII] at z ∌ 2.5 − 4.5, Hα and [NII] at z ∌ 5 − 6.5, up to [OIII] and HÎČ for z∌7-9 galaxies. FRESCO’s grism observations provide total line fluxes for accurately estimating galaxy stellar masses and calibrating slit-loss corrections of NIRSpec/MSA spectra in the same field. Additionally, FRESCO results in a mosaic of F182M, F210M, and F444W imaging in the same fields to a depth of ∌28.2 mag (5 σ in 0.â€Čâ€Č{_{.}^{\prime\prime}}32 diameter apertures). Here, we describe the overall survey design and the key science goals that can be addressed with FRESCO. We also highlight several, early science results, including: spectroscopic redshifts of Lyman break galaxies that were identified almost 20 years ago, the discovery of broad-line active galactic nuclei at z &amp;gt; 4, and resolved Paα maps of galaxies at z ∌ 1.4. These results demonstrate the enormous power for serendipitous discovery of NIRCam/grism observations

    Outcomes from elective colorectal cancer surgery during the SARS-CoV-2 pandemic

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    This study aimed to describe the change in surgical practice and the impact of SARS-CoV-2 on mortality after surgical resection of colorectal cancer during the initial phases of the SARS-CoV-2 pandemic

    The JWST FRESCO survey: legacy NIRCam/grism spectroscopy and imaging in the two GOODS fields

    Get PDF
    We present the JWST cycle 1 53.8 h medium program FRESCO, short for 'First Reionization Epoch Spectroscopically Complete Observations'. FRESCO covers 62 arcmin2 in each of the two GOODS/CANDELS fields for a total area of 124 arcmin2 exploiting JWST's powerful new grism spectroscopic capabilities at near-infrared wavelengths. By obtaining ∌2 h deep NIRCam/grism observations with the F444W filter, FRESCO yields unprecedented spectra at R ∌1600 covering 3.8-5.0 ÎŒm for most galaxies in the NIRCam field of view. This setup enables emission line measurements over most of cosmic history, from strong PAH lines at z ∌0.2-0.5, to Pa α and Pa ÎČ at z ∌1-3, He i and [S iii] at z ∌2.5-4.5, H α and [N ii] at z ∌5-6.5, up to [O iii] and H ÎČ for z ∌7-9 galaxies. FRESCO's grism observations provide total line fluxes for accurately estimating galaxy stellar masses and calibrating slit-loss corrections of NIRSpec/MSA spectra in the same field. Additionally, FRESCO results in a mosaic of F182M, F210M, and F444W imaging in the same fields to a depth of ∌28.2 mag (5σ in 032 diameter apertures). Here, we describe the overall survey design and the key science goals that can be addressed with FRESCO. We also highlight several, early science results, including: spectroscopic redshifts of Lyman break galaxies that were identified almost 20 yr ago, the discovery of broad-line active galactic nuclei at z > 4, and resolved Pa α maps of galaxies at z ∌1.4. These results demonstrate the enormous power for serendipitous discovery of NIRCam/grism observations

    Measurement of the phase difference between short- and long-distance amplitudes in the B+→K+ÎŒ+Ό−B^{+}\to K^{+}\mu^{+}\mu^{-} decay

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    A measurement of the phase difference between the short- and long-distance contributions to the B+→K+ÎŒ+Ό−B^{+}\to K^{+}\mu^{+}\mu^{-} decay is performed by analysing the dimuon mass distribution. The analysis is based on pppp collision data corresponding to an integrated luminosity of 3 fb−1\rm fb^{-1} collected by the LHCb experiment in 2011 and 2012. The long-distance contribution to the B+→K+ÎŒ+Ό−B^{+}\to K^{+}\mu^{+}\mu^{-} decay is modelled as a sum of relativistic Breit--Wigner amplitudes representing different vector meson resonances decaying to muon pairs, each with their own magnitude and phase. The measured phases of the J/ψJ/\psi and ψ(2S)\psi(2S) resonances are such that the interference with the short-distance component in dimuon mass regions far from their pole masses is small. In addition, constraints are placed on the Wilson coefficients, C9\mathcal{C}_{9} and C10\mathcal{C}_{10}, and the branching fraction of the short-distance component is measured.Comment: 23 pages, 4 figures, published in EPJC. All figures and tables, along with any supplementary material and additional information, are available at http://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2016-045.htm

    The JWST FRESCO survey:legacy NIRCam/grism spectroscopy and imaging in the two GOODS fields

    Get PDF
    We present the JWST cycle 1 53.8 h medium program FRESCO, short for 'First Reionization Epoch Spectroscopically Complete Observations'. FRESCO covers 62 arcmin2 in each of the two GOODS/CANDELS fields for a total area of 124 arcmin2 exploiting JWST's powerful new grism spectroscopic capabilities at near-infrared wavelengths. By obtaining ∌2 h deep NIRCam/grism observations with the F444W filter, FRESCO yields unprecedented spectra at R ∌1600 covering 3.8-5.0 ÎŒm for most galaxies in the NIRCam field of view. This setup enables emission line measurements over most of cosmic history, from strong PAH lines at z ∌0.2-0.5, to Pa α and Pa ÎČ at z ∌1-3, He i and [S iii] at z ∌2.5-4.5, H α and [N ii] at z ∌5-6.5, up to [O iii] and H ÎČ for z ∌7-9 galaxies. FRESCO's grism observations provide total line fluxes for accurately estimating galaxy stellar masses and calibrating slit-loss corrections of NIRSpec/MSA spectra in the same field. Additionally, FRESCO results in a mosaic of F182M, F210M, and F444W imaging in the same fields to a depth of ∌28.2 mag (5σ in 032 diameter apertures). Here, we describe the overall survey design and the key science goals that can be addressed with FRESCO. We also highlight several, early science results, including: spectroscopic redshifts of Lyman break galaxies that were identified almost 20 yr ago, the discovery of broad-line active galactic nuclei at z &gt; 4, and resolved Pa α maps of galaxies at z ∌1.4. These results demonstrate the enormous power for serendipitous discovery of NIRCam/grism observations.</p
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