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MIDIS: Unveiling the Role of Strong Hα Emitters During the Epoch of Reionization with JWST (2024)
Journal Article
Rinaldi, P., Caputi, K. I., Iani, E., Costantin, L., Gillman, S., Perez Gonzalez, P. G., Östlin, G., Colina, L., Greve, T. R., Nørgard-Nielsen, H. U., Wright, G. S., Álvarez-Márquez, J., Eckart, A., García-Marín, M., Hjorth, J., Ilbert, O., Kendrew, S., Labiano, A., Le Fèvre, O., Pye, J., …Dayal, P. (2024). MIDIS: Unveiling the Role of Strong Hα Emitters During the Epoch of Reionization with JWST. Astrophysical Journal, 969(1), 12. https://doi.org/10.3847/1538-4357/ad4147

By using an ultradeep JWST/MIRI image at 5.6 μm in the Hubble eXtreme Deep Field, we constrain the role of strong Hα emitters (HAEs) during “cosmic reionization” at z ≃ 7-8. Our sample of HAEs is comprised of young (<35 Myr) galaxies, except for one...

Reaching for the stars – JWST/NIRSpec spectroscopy of a lensed star candidate at z = 4.76 (2023)
Journal Article
Furtak, L. J., Meena, A. K., Zackrisson, E., Zitrin, A., Brammer, G. B., Coe, D., …Wilkins, S. M. (2024). Reaching for the stars – JWST/NIRSpec spectroscopy of a lensed star candidate at z = 4.76. Monthly Notices of the Royal Astronomical Society: Letters, 527(1), L7–L13. https://doi.org/10.1093/mnrasl/slad135

We present JWST/NIRSpec observations of a highly magnified star candidate at a photometric redshift of zphot ≃ 4.8, previously detected in JWST/NIRCam imaging of the strong lensing (SL) cluster MACS J0647+7015 (z = 0.591). The spectroscopic observati... Read More about Reaching for the stars – JWST/NIRSpec spectroscopy of a lensed star candidate at z = 4.76.

JWST Reveals a Possible z ∼ 11 Galaxy Merger in Triply Lensed MACS0647–JD (2023)
Journal Article
Hsiao, T. Y., Coe, D., Abdurro’uf, Whitler, L., Jung, I., Khullar, G., …Welch, B. (2023). JWST Reveals a Possible z ∼ 11 Galaxy Merger in Triply Lensed MACS0647–JD. Astrophysical Journal Letters, 949(2), Article L34. https://doi.org/10.3847/2041-8213/acc94b

MACS0647–JD is a triply lensed z ∼ 11 galaxy originally discovered with the Hubble Space Telescope. The three lensed images are magnified by factors of ∼8, 5, and 2 to AB mag 25.1, 25.6, and 26.6 at 3.5 μm. The brightest is over a magnitude brighter... Read More about JWST Reveals a Possible z ∼ 11 Galaxy Merger in Triply Lensed MACS0647–JD.

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.

The quest for cradles of life: using the fundamental metallicity relation to hunt for the most habitable type of galaxy (2015)
Journal Article
Dayal, P., Cockell, C., Rice, K., & Mazumdar, A. (2015). The quest for cradles of life: using the fundamental metallicity relation to hunt for the most habitable type of galaxy. Astrophysical Journal Letters, 810(1), https://doi.org/10.1088/2041-8205/810/1/l2

The field of astrobiology has made huge strides in understanding the habitable zones around stars (stellar habitable zones) where life can begin, sustain its existence and evolve into complex forms. A few studies have extended this idea by modeling g... Read More about The quest for cradles of life: using the fundamental metallicity relation to hunt for the most habitable type of galaxy.