Search Results - "Flury, S. R."
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1
The ultraviolet continuum slopes of high-redshift galaxies: evidence for the emergence of dust-free stellar populations at z > 10
Published in Monthly notices of the Royal Astronomical Society (13-05-2024)“…ABSTRACT We present an analysis of the ultraviolet (UV) continuum slopes (β) for a sample of 172 galaxy candidates at 8 < zphot < 16 selected from a…”
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2
Chemical abundances in Seyfert galaxies – X. Sulphur abundance estimates
Published in Monthly notices of the Royal Astronomical Society (01-05-2023)“…ABSTRACT For the first time, the sulphur abundance relative to hydrogen (S/H) in the narrow-line regions of a sample of Seyfert 2 nuclei (Sy 2s) has been…”
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3
Direct estimates of nitrogen abundance for Seyfert 2 nuclei
Published in Monthly notices of the Royal Astronomical Society (17-10-2024)“…ABSTRACT We derive the nitrogen and oxygen abundances in the narrow line regions (NLRs) of a sample of 38 local ($z \: \lt \: 0.4$) Seyfert 2 nuclei. For that,…”
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4
Ubiquitous broad-line emission and the relation between ionized gas outflows and Lyman continuum escape in Green Pea galaxies
Published 15-02-2024“…We report observational evidence of highly turbulent ionized gas kinematics in a sample of 20 Lyman continuum (LyC) emitters (LCEs) at low redshift ($z\sim…”
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5
Chemical abundances in Seyfert galaxies X. Sulphur abundance estimates
Published 24-02-2023“…For the first time, the sulphur abundance relative to hydrogen (S/H) in the Narrow Line Regions of a sample of Seyfert 2 nuclei (Sy 2s) has been derived via…”
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6
No correlation of the Lyman continuum escape fraction with spectral hardness
Published 03-06-2022“…A&A 663, L1 (2022) The properties that govern the production and escape of hydrogen ionizing photons (Lyman continuum, LyC; with energies >13.6 eV) in…”
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7
Chemical abundances in Seyfert galaxies – X. Sulphur abundance estimates
Published in Monthly notices of the Royal Astronomical Society (02-03-2023)“…ABSTRACT For the first time, the sulphur abundance relative to hydrogen (S/H) in the narrow-line regions of a sample of Seyfert 2 nuclei (Sy 2s) has been…”
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Journal Article -
8
Empirical calibration for helium abundance determinations in active galactic nuclei
Published in Monthly notices of the Royal Astronomical Society. Letters (14-06-2024)“…ABSTRACT For the first time, a calibration between the He i$\lambda 5876$/H $\beta$ emission line ratio and the helium abundance y = 12 + log(He/H) for Narrow…”
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9
Generalized $T_e$([OIII])-$T_e$(HeI) Discrepancies in Ionized Nebulae: Possible Evidence of Case B Deviations and Temperature Inhomogeneities
Published 22-10-2024“…The physics of recombination lines (RLs) in the HeI singlet system is expected to be relatively simple, supported by accurate atomic models. We examine the…”
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10
A negligible contribution of two luminous $z$ ~ 7.5 galaxies to the ionizing photon budget of reionization
Published 04-10-2024“…We present indirect constraints on the absolute escape fraction of ionizing photons ($f_{\rm esc}^{\rm LyC}$) of the system GN 42912 which comprises two…”
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11
Empirical calibration for helium abundance determinations in Active Galactic Nuclei
Published 05-06-2024“…For the first time, a calibration between the HeI $\lambda5876$/H$\beta$ emission line ratio and the helium abundance $y$=12+log(He/H) for Narrow line regions…”
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12
Direct estimates of nitrogen abundance for Seyfert 2 nuclei
Published 22-05-2024“…We derive the nitrogen and oxygen abundances in the Narrow Line Regions (NLRs) of a sample of 38 local ($z \: < \: 0.4$) Seyfert~2 nuclei. For that, we…”
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Journal Article -
13
The ultraviolet continuum slopes of high-redshift galaxies: evidence for the emergence of dust-free stellar populations at z > 10
Published 10-11-2023“…We present an analysis of the ultraviolet (UV) continuum slopes ($\beta$) for a sample of $172$ galaxy candidates at $8 < z_{\mathrm{phot}} < 16$ selected from…”
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14
The JWST Emission Line Survey (JELS): An untargeted search for H$\alpha$ emission line galaxies at $z > 6$ and their physical properties
Published 15-10-2024“…We present the first results of the JWST Emission Line Survey (JELS). Utilising the first NIRCam narrow-band imaging at 4.7$\mu$m, over 63 arcmin$^{2}$ in the…”
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15
The JWST Emission Line Survey (JELS): Extending rest-optical narrow-band emission line selection into the Epoch of Reionization
Published 11-10-2024“…We present the JWST Emission Line Survey (JELS), a Cycle 1 JWST imaging programme exploiting the wavelength coverage and sensitivity of NIRCam to extend…”
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16
The JWST-PRIMAL Legacy Survey. A JWST/NIRSpec reference sample for the physical properties and Lyman-$\alpha$ absorption and emission of $\sim 500$ galaxies at $z=5.5-13.4
Published 02-04-2024“…One of the surprising early findings with JWST has been the discovery of a strong "roll-over" or a softening of the absorption edge of Ly$\alpha$ in a large…”
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