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Two Lensed Star Candidates at z ≃ 4.8 behind the Galaxy Cluster MACS J0647.7+7015 (2023)
Journal Article
Meena, A. K., Zitrin, A., Jiménez-Teja, Y., Zackrisson, E., Chen, W., Coe, D., …Windhorst, R. A. (2023). Two Lensed Star Candidates at z ≃ 4.8 behind the Galaxy Cluster MACS J0647.7+7015. Astrophysical Journal Letters, 944(1), Article L6. https://doi.org/10.3847/2041-8213/acb645

We report the discovery of two extremely magnified lensed star candidates behind the galaxy cluster MACS J0647.7+015 using recent multiband James Webb Space Telescope (JWST) NIRCam observations. The star candidates are seen in a previously known, zph... Read More about Two Lensed Star Candidates at z ≃ 4.8 behind the Galaxy Cluster MACS J0647.7+7015.

REQUIEM-2D: A Diversity of Formation Pathways in a Sample of Spatially Resolved Massive Quiescent Galaxies at z ∼ 2 (2023)
Journal Article
Akhshik, M., Whitaker, K. E., Leja, J., Richard, J., Spilker, J. S., Song, M., Brammer, G., Bezanson, R., Ebeling, H., Gallazzi, A. R., Mahler, G., Mowla, L. A., Nelson, E. J., Pacifici, C., Sharon, K., Toft, S., Williams, C. C., Wright, L., & Zabl, J. (2023). REQUIEM-2D: A Diversity of Formation Pathways in a Sample of Spatially Resolved Massive Quiescent Galaxies at z ∼ 2. Astrophysical Journal, 943(2), Article 179. https://doi.org/10.3847/1538-4357/aca677

REQUIEM-2D (Resolving Quiescent Magnified Galaxies with 2D Grism Spectroscopy) comprises a sample of eight massive strongly lensed quiescent galaxies at z ∼ 2. REQUIEM-2D combines the natural magnification from strong gravitational lensing with the h... Read More about REQUIEM-2D: A Diversity of Formation Pathways in a Sample of Spatially Resolved Massive Quiescent Galaxies at z ∼ 2.

Discovering gravitationally lensed gravitational waves: predicted rates, candidate selection, and localization with the Vera Rubin Observatory (2023)
Journal Article
Smith, G. P., Robertson, A., Mahler, G., Nicholl, M., Ryczanowski, D., Bianconi, M., Sharon, K., Massey, R., Richard, J., & Jauzac, M. (2023). Discovering gravitationally lensed gravitational waves: predicted rates, candidate selection, and localization with the Vera Rubin Observatory. Monthly Notices of the Royal Astronomical Society, 520(1), 702-721. https://doi.org/10.1093/mnras/stad140

Secure confirmation that a gravitational wave (GW) has been gravitationally lensed would bring together these two pillars of General Relativity for the first time. This breakthrough is challenging for many reasons, including: GW sky localization unce... Read More about Discovering gravitationally lensed gravitational waves: predicted rates, candidate selection, and localization with the Vera Rubin Observatory.

Star formation at the smallest scales: a JWST study of the clump populations in SMACS0723 (2023)
Journal Article
Claeyssens, A., Adamo, A., Richard, J., Mahler, G., Messa, M., & Dessauges-Zavadsky, M. (2023). Star formation at the smallest scales: a JWST study of the clump populations in SMACS0723. Monthly Notices of the Royal Astronomical Society, 520(2), 2180-2203. https://doi.org/10.1093/mnras/stac3791

We present the clump populations detected in 18 lensed galaxies at redshifts 1--8.5 within the lensing cluster field SMACS0723. The recent JWST Early Release Observations of this poorly known region of the sky have revealed numerous point-like source... Read More about Star formation at the smallest scales: a JWST study of the clump populations in SMACS0723.