CLASH: Three Strongly Lensed Images of a Candidate z ~ 11 Galaxy
Dan Coe, Adi Zitrin, Mauricio Carrasco, Xinwen Shu, Wei Zheng, Marc, Postman, Larry Bradley, Anton Koekemoer, Rychard Bouwens, Tom Broadhurst,, Anna Monna, Ole Host, Leonidas A. Moustakas, Holland Ford, John Moustakas,, Arjen van der Wel, Megan Donahue, Steven A. Rodney

TL;DR
This paper reports the discovery of a candidate galaxy at redshift z ~ 11, observed through gravitational lensing, providing insights into early universe galaxy formation and the reionization epoch.
Contribution
First detection of a strongly lensed galaxy candidate at z ~ 11, demonstrating the potential of gravitational lensing and Hubble data to probe the universe's earliest galaxies.
Findings
Candidate galaxy at z ~ 11 confirmed by photometry.
Three magnified images due to gravitational lensing.
Supports the existence of low luminosity galaxies at high redshift.
Abstract
We present a candidate for the most distant galaxy known to date with a photometric redshift z = 10.7 +0.6 / -0.4 (95% confidence limits; with z < 9.5 galaxies of known types ruled out at 7.2-sigma). This J-dropout Lyman Break Galaxy, named MACS0647-JD, was discovered as part of the Cluster Lensing and Supernova survey with Hubble (CLASH). We observe three magnified images of this galaxy due to strong gravitational lensing by the galaxy cluster MACSJ0647.7+7015 at z = 0.591. The images are magnified by factors of ~8, 7, and 2, with the brighter two observed at ~26th magnitude AB (~0.15 uJy) in the WFC3/IR F160W filter (~1.4 - 1.7 um) where they are detected at >~ 12-sigma. All three images are also confidently detected at >~ 6-sigma in F140W (~1.2 - 1.6 um), dropping out of detection from 15 lower wavelength HST filters (~0.2 - 1.4 um), and lacking bright detections in Spitzer/IRAC…
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Taxonomy
TopicsAstronomy and Astrophysical Research · Stellar, planetary, and galactic studies · Adaptive optics and wavefront sensing
