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216 papers
Assessing Ultra-Cool Dwarf Contamination in Photometrically Selected High-Redshift Galaxy Samples
Onnalin Innala, Nicha Leethochawalit, Takahiro Morishita +1
Ultra-cool dwarf stars (UCDs) are a common source of contamination in high-redshift galaxy searches because both populations have red colors and these early-forming galaxies can ha…
BEACON: JWST NIRCam Pure-parallel Imaging Survey. III. Constraints on the UV LF and the Clustering of z~7-14 Galaxies
Kimi C. Kreilgaard, Charlotte A. Mason, Takahiro Morishita +21
The James Webb Space Telescope (JWST) has extended the frontier of galaxy detection to redshifts z>11, finding a high abundance of UV-bright sources that challenge theoretical mode…
BEACON: JWST NIRCam Pure-parallel Imaging Survey. IV. A Systematic Search for Galaxy Overdensities and Evidence for Gas Accretion Mode Transition
Ryo Albert Sutanto, Takahiro Morishita, Tadayuki Kodama +20
We systematically search for galaxy overdensities using 20 independent fields with a minimum of six filters (F090W, F115W, F150W, F277W, F356W, and F444W) from BEACON, the JWST Cyc…
A Portrait of the Cosmic Reionisation History in the Context of the Early Dark Energy Model
Weiyang Liu, Xin Wang, Hu Zhan +3
Recent JWST observations of Lyman- emission at indicate a rapid reionization of the intergalactic medium within the first Myr. The required Lyman continu…
Beyond UV: Rest-frame B-band and Apparent Luminosity Functions of z=5-9 Galaxies
Nicha Leethochawalit, Takahiro Morishita, Tirawut Worrakitpoonpon +1
We present new measurements of galaxy luminosity functions (LFs) from JWST/NIRCam imaging over the redshift range z=4.5-9.7, using photometric catalogs from JADES and public extrag…
BEACON: JWST NIRCam Pure-parallel Imaging Survey. II. Physical Properties of Galaxies
Yechi Zhang, Takahiro Morishita, Kimi C. Kreilgaard +23
We present photometric properties of 161 galaxy candidates at selected from the second data release (DR2) of BEACON, a JWST Cycle 2 pure-parallel NIRCam imaging program. C…