학술논문
Extremely red galaxies at $z=5-9$ with MIRI and NIRSpec: dusty galaxies or obscured AGNs?
Document Type
Working Paper
Author
Barro, Guillermo; Perez-Gonzalez, Pablo G.; Kocevski, Dale D.; McGrath, Elizabeth J.; Trump, Jonathan R.; Simons, Raymond C.; Somerville, Rachel S.; Yung, L. Y. Aaron; Haro, Pablo Arrabal; Bagley, Michaela B.; Cleri, Nikko J.; Costantin, Luca; Davis, Kelcey; Dickinson, Mark; Finkelstein, Steve L.; Giavalisco, Mauro; Gomez-Guijarro, Carlos; Hathi, Nimish P.; Hirschmann, Michaela; Akins, Hollis B.; Holwerda, Benne W.; Huertas-Company, Marc; Lucas, Ray A.; Papovich, Casey; Seille, Lise-Marie; Tacchella, Sandro; Wilkins, Stephen M.; de la Vega, Alexander; Yang, Guang; Zavala, Jorge A.
Source
Subject
Language
Abstract
We study a new population of extremely red objects (EROs) recently discovered by JWST based on their NIRCam colors F277W$-$F444W $>1.5$ mag. We find 37 EROs in the CEERS field with F444W $<28$ mag and photometric redshifts between $57$ by up to a factor $\sim$60. Similarly, if they are OSOs with luminosities in the L$_{\rm bol}>10^{46-47}$ erg s$^{-1}$ range, their number would exceed that of bright blue QSOs by more than two orders of magnitude. Additional photometry at mid-IR wavelengths will reveal the true nature of the red continuum emission in these EROs and will place this puzzling population in the right context of galaxy evolution.
Comment: 26 pages, 10 figures, submitted to ApJ
Comment: 26 pages, 10 figures, submitted to ApJ