A Geometrically Supported $z\sim 10$ Candidate Multiply-Imaged by the Hubble Frontier Fields Cluster Abell 2744

Abstract

The deflection angles of lensed sources increase with their distance behind a given lens. We utilize this geometric effect to corroborate the $z_{phot}\simeq 9.8$ photometric redshift estimate of a faint near-IR dropout, triply-imaged by the massive galaxy cluster Abell 2744 in deep Hubble Frontier Fields images. The multiple images of this source follow the same symmetry as other nearby sets of multiple images which bracket the critical curves and have well defined redshifts (up to $z_{spec}\simeq 3.6$), but with larger deflection angles, indicating that this source must lie at a higher redshift. Similarly, our different parametric and non-parametric lens models all require this object be at $z\gtrsim 4$, with at least 95\% confidence, thoroughly excluding the possibility of lower-redshift interlopers. To study the properties of this source we correct the two brighter images for their magnifications, leading to a SFR of $\sim 0.3M_{\odot }$/yr, a stellar mass of $\sim 4\times 10^7{M}_{\odot }$, and an age of $\lesssim 220$ Myr (95\% confidence). The intrinsic apparent magnitude is 29.9 AB (F160W), and the rest-frame UV ($\sim 1500\mathring{A}$) absolute magnitude is $M_{UV,AB}=-17.6$. This corresponds to $\sim 0.1L_{z=8}^{\ast }$ ($\sim 0.2L_{z=10}^{\ast }$, adopting $d{M}^{\ast }/dz\sim 0.45$), making this candidate one of the least luminous galaxies discovered at $z\sim 10$.

7 pages, 4 figures, 1 table; V2: very minor changes, ApJ Letters Accepted

References in corpus (7)

• A Bayesian approach to strong lensing modelling of galaxy clusters
• PRIMUS: Constraints on Star Formation Quenching and Galaxy Merging, and the Evolution of the Stellar Mass Function From z=0-1
• Galaxies in the Hubble Ultra Deep Field: I. Detection, Multiband Photometry, Photometric Redshifts, and Morphology
• Cluster Lenses
• Mass and magnification maps for the Hubble Space Telescope Frontier Fields clusters: implications for high redshift studies
• Discovery of a Very Bright Strongly-Lensed Galaxy Candidate at z ~ 7.6
• Spectroscopic Confirmation of a z=6.740 Galaxy behind the Bullet Cluster

Cited by in corpus (24)

• Hubble Space Telescope Combined Strong and Weak Lensing Analysis of the CLASH Sample: Mass and Magnification Models and Systematic Uncertainties
• Hubble Frontier Fields First Complete Cluster Data: Faint Galaxies at $z\sim 5-10$ for UV Luminosity Functions and Cosmic Reionization
• New redshift z ~ 9 galaxies in the Hubble Frontier Fields: Implications for early evolution of the UV luminosity density
• New Constraints on the Faint-end of the UV Luminosity Function at z~7-8 using the Gravitational Lensing of the Hubble Frontier Fields Cluster A2744
• The systematics of strong lens modeling quantified: the effects of constraint selection and redshift information on magnification, mass, and multiple image predictability
• Evidence for GN-z11 as a luminous galaxy at redshift 10.957
• The ALMA Frontier Fields survey I: 1.1 mm continuum detections in Abell 2744, MACSJ0416.1-2403 and MACSJ1149.5+2223
• Early Results from GLASS-JWST. I: Confirmation of Lensed $z⩾7$ Lyman-Break Galaxies Behind the Abell 2744 Cluster With NIRISS
• A Rigorous Free-form Lens Model of Abell 2744 to Meet the Hubble Frontier Fields Challenge
• Frontier Fields : Combining HST, VLT and Spitzer data to explore the $z$$\sim$8 Universe behind the lensing cluster MACS0416$-$2403
• Stellar mass functions of galaxies at 4<z<7 from an IRAC-selected sample in COSMOS/UltraVISTA: limits on the abundance of very massive galaxies
• The ALMA Frontier Fields Survey - II. Multiwavelength Photometric analysis of 1.1mm continuum sources in Abell 2744, MACSJ0416.1-2403 and MACSJ1149.5+2223
• Young Galaxy Candidates in the Hubble Frontier Fields IV. MACS J1149.5+2223
• Accounting for Cosmic Variance in Studies of Gravitationally-Lensed High-Redshift Galaxies in the Hubble Frontier Field Clusters
• The Brightest Galaxies at Cosmic Dawn from Scatter in the Galaxy Luminosity versus Halo Mass Relation
• A Pilot Survey for CIII] Emission in the Reionization Era: Gravitationally-Lensed z$\sim 7-8$ Galaxies in the Frontier Fields Cluster Abell 2744
• Probability of magnification in the $\text{Hubble Frontier Fields}$ clusters
• On the detectability of strong lensing in near-infrared surveys
• Geometric Corroboration of the Earliest Lensed Galaxy at z~10.8 from Robust Free-Form Modelling
• CLASH: Extreme Emission Line Galaxies and Their Implication on Selection of High-Redshift Galaxies
• Not In Our Backyard: Spectroscopic Support for the CLASH z=11 Candidate MACS0647-JD
• Joint Strong and Weak Lensing Analysis of the Massive Cluster Field J0850+3604
• A Multiply-Imaged z $\sim$ 6.3 Lyman Alpha Emitter candidate behind Abell 2261
• Systematic search for lensed X-ray sources in the CLASH fields