VENUS: When Red meets Blue -- A multiply imaged Little Red Dot with an apparent blue companion behind the galaxy cluster Abell 383
Miriam Golubchik, Lukas J. Furtak, Joseph F. V. Allingham, Adi Zitrin, Hollis B. Akins, Vasily Kokorev, Seiji Fujimoto, Abdurro'uf, Ricardo O. Amor\'in, Franz E. Bauer, Rachel Bezanson, Marusa Brada\v{c}, Larry D. Bradley, Gabriel B. Brammer, John Chisholm, Dan Coe

TL;DR
This paper reports the discovery of a multiply-imaged Little Red Dot galaxy behind Abell 383, revealing a complex system with a red point source and a blue companion, providing new insights into early galaxy formation.
Contribution
First confirmed multiply-imaged Little Red Dot system with detailed lensing, SED, and emission line analysis, enhancing understanding of high-redshift galaxy properties.
Findings
Identification of a red point-source with a blue companion at z=6.027
Detection of [C II] emission with ALMA from the system
Estimation of lensing magnifications and time delay between images
Abstract
We report the discovery of a doubly-imaged Little Red Dot (LRD) candidate behind the galaxy cluster Abell 383, which we dub A383-LRD1. Initially classified as a dropout galaxy in HST imaging with several ground-based emission line detections placing it at , new JWST/NIRCam observations taken as part of the cycle 4 VENUS survey now reveal that the source consists of two underlying components: A red point-source with a V-shaped SED consistent with LRD selection criteria, and a nearby ( pc) compact blue companion which was the main contributor to the previous rest-frame UV detections. Based on lensing symmetry and its SED, the LRD appears to lie at a similar redshift as well. The magnification of the two images of A383-LRD1 is and , respectively, and the predicted time delay between them is $\Delta…
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Taxonomy
TopicsGalaxies: Formation, Evolution, Phenomena · Astronomy and Astrophysical Research · Astrophysical Phenomena and Observations
