Academic Journal
CEERS Key Paper. IV. A Triality in the Nature of HST-dark Galaxies
| العنوان: | CEERS Key Paper. IV. A Triality in the Nature of HST-dark Galaxies |
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| المؤلفون: | Pérez-González, P.G., Barro, G., Annunziatella, M., Costantin, L., García-Argumánez, I., McGrath, E.J., Mérida, R.M., Zavala, J.A., Haro, P.A., Bagley, M.B., Backhaus, B.E., Behroozi, P., Bell, E.F., Bisigello, L., Buat, V., Calabrò, A., Casey, C.M., Cleri, N.J., Coogan, R.T., Cooper, M.C., Cooray, A.R., Dekel, A., Dickinson, M., Elbaz, D., Ferguson, H.C., Finkelstein, S.L., Fontana, A., Franco, M., Gardner, J.P., Giavalisco, M., Gómez-Guijarro, C., Grazian, A., Grogin, N.A., Guo, Y., Huertas-Company, M., Jogee, S., Kartaltepe, J.S., Kewley, L.J., Kirkpatrick, A., Kocevski, D.D., Koekemoer, A.M., Long, A.S., Lotz, J.M., Lucas, R.A., Papovich, C., Pirzkal, N., Ravindranath, S., Somerville, R.S., Tacchella, S., Trump, J.R., Wang, W., Wilkins, S.M., Wuyts, S., Yang, G., Aaron, Yung, L.Y. |
| المساهمون: | Department of Astronomy, Steward Observatory, University of Arizona |
| المصدر: | Astrophysical Journal Letters |
| بيانات النشر: | American Astronomical Society |
| سنة النشر: | 2023 |
| المجموعة: | The University of Arizona: UA Campus Repository |
| الوصف: | The new capabilities that JWST offers in the near- and mid-infrared (IR) are used to investigate in unprecedented detail the nature of optical/near-IR-faint, mid-IR-bright sources, with HST-dark galaxies among them. We gather JWST data from the CEERS survey in the Extended Groth Strip, jointly with HST data, and analyze spatially resolved optical-to-mid-IR spectral energy distributions to estimate photometric redshifts in two dimensions and stellar population properties on a pixel-by-pixel basis for red galaxies detected by NIRCam. We select 138 galaxies with F150W − F356W > 1.5 mag and F356W < 27.5 mag. The nature of these sources is threefold: (1) 71% are dusty star-forming galaxies (SFGs) at 2 < z < 6 with 9 < log M ⋆ / M ⊙ < 11 and a variety of specific SFRs (<1 to >100 Gyr−1); (2) 18% are quiescent/dormant (i.e., subject to reignition/rejuvenation) galaxies (QGs) at 3 < z < 5, with log M ⋆ / M ⊙ ∼ 10 and poststarburst mass-weighted ages (0.5-1.0 Gyr); and (3) 11% are strong young starbursts with indications of high equivalent width emission lines (typically, [O iii]+Hβ) at 6 < z < 7 (XELG-z6) and log M ⋆ / M ⊙ ∼ 9.5 . The sample is dominated by disk-like galaxies with remarkable compactness for XELG-z6 (effective radii smaller than 0.4 kpc). Large attenuations in SFGs, 2 < A(V) < 5 mag, are found within 1.5 times the effective radius, approximately 2 kpc, while QGs present A(V) ∼ 0.2 mag. Our SED-fitting technique reproduces the expected dust emission luminosities of IR-bright and submillimeter galaxies. This study implies high levels of star formation activity between z ∼ 20 and z ∼ 10, where virtually 100% of our galaxies had already formed 108 M ⊙, 60% had assembled 109 M ⊙, and 10% up to 1010 M ⊙ (in situ or ex situ). © 2023. The Author(s). Published by the American Astronomical Society. ; Open access journal ; This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 2041-8205 |
| Relation: | Pablo G. Pérez-González et al 2023 ApJL 946 L16; http://hdl.handle.net/10150/673478; Astrophysical Journal Letters |
| DOI: | 10.3847/2041-8213/acb3a5 |
| الاتاحة: | http://hdl.handle.net/10150/673478 https://doi.org/10.3847/2041-8213/acb3a5 |
| Rights: | © 2023. The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. ; https://creativecommons.org/licenses/by/4.0/ |
| رقم الانضمام: | edsbas.D51CC4C9 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 20418205 |
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| DOI: | 10.3847/2041-8213/acb3a5 |