A Lyman continuum analysis for $\sim 100$ galaxies at $z_{\text{spec}}\sim 3$ in the Abell 2744 Cluster Field

Abstract

Identifying Lyman continuum (LyC) leakers at intermediate redshifts is crucial for understanding the properties of cosmic reionizers, as the opacity of the intergalactic medium (IGM) prevents direct detection of LyC emission from sources during the Epoch of Reionization (EoR). In this study, we confirm two new LyC candidate leakers at $z\sim 3$ in the Abell 2744 cluster field, with absolute escape fractions ($f_{\text{esc}}$) of $0.90_{-0.86}^{+0.07}$ and $0.60_{-0.56}^{+0.37}$, respectively. The LyC emission was detected using HST/WFC3/F275W and F336W imaging. These two candidate leakers appear faint ($M_{\text{UV}}=-18.1\pm 0.1\text{ and }-17.81\pm 0.11$), exhibit blue UV continuum slopes ($\beta =-2.42\pm 0.05\text{ and }-1.78\pm 0.19$), have low masses ($M_{\star }\sim 10^{7.73}\pm 0.1\text{ and }10^{7.07}\pm 0.05M_{\odot }$) and show \lya\ equivalent widths of $90\pm 3$ Å and $28\pm 12$ Å, respectively. The discovery of these two LyC candidate leakers was achieved in a catalog of 91 spectroscopically confirmed sources using JWST and/or MUSE public spectra. We also analyze properties that have been proposed as indirect indicators of LyC emission, like \lya, O32 ratio, and $M_{\star }$: we create subsample of galaxies selected according to such properties, stack the LyC observations of these subsample and assess the limits in escape fractions in the stacks. By analysing the individual candidates and the stacks, in the context of the currently limited sample of known LyC leakers at $z\sim 3$, we aim to enhance our understanding of LyC escape mechanisms and improve our predictions of the LyC $f_{\text{esc}}$ during the EoR.

arXiv comment12 pages,7 figures,2 tables

References in corpus (96)

• Stellar population synthesis at the resolution of 2003
• Galactic Stellar and Substellar Initial Mass Function
• The Dust Content and Opacity of Actively Star-Forming Galaxies
• CIGALE: a python Code Investigating GALaxy Emission
• A Deep Sub-millimeter Survey of Lensing Clusters: A New Window on Galaxy Formation and Evolution
• The Near-Infrared Spectrograph (NIRSpec) on the James Webb Space Telescope I. Overview of the instrument and its capabilities
• Star Formation and Dust Attenuation Properties in Galaxies from a Statistical UV-to-FIR Analysis
• An updated analytic model for the attenuation by the intergalactic medium
• Lyman Continuum Emission from Galaxies at z~3.4
• The Birth of a Galaxy - III. Propelling reionisation with the faintest galaxies
• Ionization State of Inter-Stellar Medium in Galaxies: Evolution, SFR-M_star-Z Dependence, and Ionizing Photon Escape
• Conditions for Reionizing the Universe with A Low Galaxy Ionizing Photon Escape Fraction
• Low-redshift Lyman continuum leaking galaxies with high [OIII]/[OII] ratios
• The Keck Lyman Continuum Spectroscopic Survey (KLCS): The Emergent Ionizing Spectrum of Galaxies at $z\sim 3$
• Hydrogen reionisation ends by $z=5.3$: Lyman-$\alpha$ optical depth measured by the XQR-30 sample
• Using Lyman-alpha to detect galaxies that leak Lyman continuum
• Extreme Feedback and the Epoch of Reionization: Clues in the Local Universe
• The Origin and Optical Depth of Ionizing Radiation in the "Green Pea" Galaxies
• Ly$\alpha$ emission from Green Peas: the role of circumgalactic gas density, covering, and kinematics
• Inferences on the Timeline of Reionization at z~8 From the KMOS Lens-Amplified Spectroscopic Survey
• Fluctuating feedback-regulated escape fraction of ionizing radiation in low-mass, high-redshift galaxies
• Galaxy Formation and Reionization: Key Unknowns and Expected Breakthroughs by the James Webb Space Telescope
• Lyman-alpha spectral properties of five newly discovered Lyman continuum emitters
• The First Billion Years Project: The escape fraction of ionizing photons in the epoch of reionization
• Observations of the Lyman-$\alpha$ Universe
• A Local Clue to the Reionization of the Universe
• Hubble imaging of the ionizing radiation from a star-forming galaxy at z=3.2 with fesc>50%
• An extreme [OIII] emitter at $z=3.2$: a low metallicity Lyman continuum source
• The Lyman Continuum Escape Survey: Ionizing Radiation from [O III]-Strong Sources at a Redshift of 3.1
• Direct Lyman continuum and Lyman-alpha escape observed at redshift 4
• The Low-Redshift Lyman Continuum Survey I: New, Diverse Local Lyman-Continuum Emitters
• Metal-rich, Metal-poor: Updated Stellar Population Models for Old Stellar Systems
• New Constraints on the Lyman Continuum Escape Fraction at z~1.3
• A Deep HST Search for Escaping Lyman Continuum Flux at z~1.3: Evidence for an Evolving Ionizing Emissivity
• The Low-Redshift Lyman Continuum Survey II: New Insights into LyC Diagnostics
• The Far-Ultraviolet Continuum Slope as a Lyman Continuum Escape Estimator at High-redshift
• On The Detection Of Ionizing Radiation Arising From Star-Forming Galaxies At Redshift z ~ 3-4 : Looking For Analogs Of "Stellar Reionizers"
• An Atlas of MUSE Observations towards Twelve Massive Lensing Clusters
• Texas Spectroscopic Search for Ly$\alpha$ Emission at the End of Reionization III. the Ly$\alpha$ Equivalent-width Distribution and Ionized Structures at $z>7$
• Gravitational lensing reveals ionizing ultraviolet photons escaping from a distant galaxy
• The Connection Between Reddening, Gas Covering Fraction, and the Escape of Ionizing Radiation at High Redshift
• Ionizing radiation from z=4-10 galaxies
• CANDELSz7: a large spectroscopic survey of CANDELS galaxies in the reionization epoch
• New Insights on Ly-alpha and Lyman Continuum Radiative Transfer in the Greenest Peas
• Reionization with galaxies and active galactic nuclei
• The origin of the escape of Lyman alpha and ionizing photons in Lyman Continuum Emitters
• Ionising the Intergalactic Medium by Star Clusters: The first empirical evidence
• The ASTRODEEP Frontier Fields Catalogues: I - Multiwavelength photometry of Abell-2744 and MACS-J0416
• An uncontaminated measurement of the escaping Lyman continuum at $z\sim 3$
• The Lyman Continuum escape fraction of galaxies at z=3.3 in the VUDS-LBC/COSMOS field
• The Lyman Continuum escape fraction of faint galaxies at z~3.3 in the CANDELS/GOODS-North, EGS, and COSMOS fields with LBC
• The Lyman Continuum Escape Survey -- II: Ionizing Radiation as a Function of the [OIII]/[OII] Line Ratio
• The Low-Redshift Lyman Continuum Survey. Unveiling the ISM properties of low-$z$ Lyman continuum emitters
• The Evolution Of The Faint End Of The UV Luminosity Function During The Peak Epoch Of Star Formation (1<z<3)
• A Monte Carlo simulation of the intergalactic absorption and the detectability of the Lyman continuum from distant galaxies
• Closing in on the sources of cosmic reionization: first results from the GLASS-JWST program
• Peering through the holes: the far UV color of star-forming galaxies at z~3-4 and the escaping fraction of ionizing radiation
• Evolution in the Escape Fraction of Ionizing Photons and the Decline in Strong Lya Emission from z>6 Galaxies
• Ly$\alpha$-Lyman Continuum connection in 3.5 < z < 4.3 star-forming galaxies from the VUDS survey
• A Low Lyman Continuum Escape Fraction of $<10\%$ for Extreme [OIII] Emitters in an Overdensity at z$\sim 3.5$
• A new technique for finding galaxies leaking Lyman-continuum radiation: [SII]-deficiency
• A low escape fraction of ionizing photons of L>L* Lyman break galaxies at z=3.3
• Inferring the IGM Neutral Fraction at z ~ 6-8 with Low-Luminosity Lyman Break Galaxies
• The GLASS-JWST Early Release Science Program. III. Strong lensing model of Abell 2744 and its infalling regions
• New high-precision strong lensing modeling of Abell 2744. Preparing for JWST observations
• HST Imaging of the Ionizing Radiation from a Star-forming Galaxy at z = 3.794
• The Lyman Continuum escape fraction of emission line-selected $z\sim 2.5$ galaxies is less than 15%
• An extreme blue nugget, UV-bright starburst at z=3.613 with ninety per cent of Lyman continuum photon escape
• Early Results From GLASS-JWST. XII: The Morphology of Galaxies at the Epoch of Reionization
• On the Lack of Correlation Between [OIII]/[OII] and Lyman-Continuum Escape Fraction
• New constraints on the average escape fraction of Lyman continuum radiation in z~4 galaxies from the VIMOS Ultra Deep Survey (VUDS)
• Early Results from GLASS-JWST. I: Confirmation of Lensed $z⩾7$ Lyman-Break Galaxies Behind the Abell 2744 Cluster With NIRISS
• UV absorption lines and their potential for tracing the Lyman continuum escape fraction
• The UV-brightest Lyman continuum emitting star-forming galaxy
• Early results from GLASS-JWST. II: NIRCam extra-galactic imaging and photometric catalog
• A suppressed contribution of low mass galaxies to reionization due to supernova feedback
• Peering into cosmic reionization: the Ly$\alpha$ visibility evolution from galaxies at $z$ = 4.5-8.5 with JWST
• The Low-redshift Lyman-continuum Survey: [S II]-deficiency and the leakage of ionizing radiation
• New Methods for Identifying Lyman Continuum Leakers and Reionization-Epoch Analogues
• The efficiency of ionising photon production and the radiation energy balance in compact star-forming galaxies
• ASTRODEEP-JWST: NIRCam-HST multiband photometry and redshifts for half a million sources in six extragalactic deep fields
• The GLASS-JWST Early Release Science Program. II. Stage I release of NIRCam imaging and catalogs in the Abell 2744 region
• Searching for candidates of Lyman continuum sources - revisiting the SSA22 field
• UNCOVERing the contribution of black holes to reionization in the JWST era
• Early results from GLASS-JWST. VI: Extreme rest-optical equivalent widths detected in NIRISS Wide Field Slitless Spectroscopy
• Early Results from GLASS-JWST XXII: Rest frame UV-optical spectral properties of Lyman-alpha emitting galaxies at 3 $<$ z $<$ 6
• Physical properties of extreme emission-line galaxies at $z\sim 4-9$ from the JWST CEERS survey
• Upper limits on the escape fraction of ionizing radiation from galaxies at $2\lesssim z<6$
• A bottom-up search for Lyman-continuum leakage in the Hubble Ultra Deep Field
• Early Results from GLASS-JWST XXIII: The transmission of Lyman-alpha from UV-faint z ~ 3-6 galaxies
• The Lyman Continuum Escape Fraction of Star-forming Galaxies at $2.4\lesssim z\lesssim 3.0$ from UVCANDELS
• The GLASS-JWST Early Release Science Program. IV. Data release of 263 spectra from 245 unique sources
• Testing an indirect method for identifying galaxies with high levels of Lyman continuum leakage
• The GLASS-JWST Early Release Science Programme: The NIRISS Spectroscopic Catalogue
• Inferring the Distribution of the Ionising Photon Escape Fraction
• Limits to Ionization-Parameter Mapping as a Diagnostic of HII Region Optical Depth