SIMBAD references

2026ApJ...997..103H - Astrophys. J., 997, 103 (2026/January-3)

The Distribution of Quenched Galaxies in the Massive z = 0.87 Galaxy Cluster El Gordo.

HONOR R., COHEN S.H., CARLETON T., WILLNER S.P., POLLETTA M.D.C., WINDHORST R.A., COE D., CONSELICE C.J., DIEGO J.M., DRIVER S.P., D'SILVA J.C.J., FOO N., FRYE B.L., GROGIN N.A., HATHI N.P., JANSEN R.A., KAMIENESKI P.S., KOEKEMOER A.M., LEIMBACH R., MARSHALL M.A., ORTIZ III R., PIRZKAL N., RICOTTI M., ROBOTHAM A.S.G., RUTKOWSKI M.J., RYAN R.E.Jr, SAIKIA P., SUMMERS J., WILLMER C.N.A. and YAN H.

Abstract (from CDS):

El Gordo (ACT-CL J0102-4915) is a massive galaxy cluster with two major mass components at redshift z = 0.87. Using spectral energy distribution fitting results from JWST/NIRCam photometry, the fraction of quenched galaxies in this cluster was measured in two bins of stellar mass: $9\lt {\mathrm{log}}({M}_{* }/{M}_{\odot })\lt 10$ and $10\leqslant \,{\mathrm{log}}({M}_{* }/{M}_{\odot })\lt 12$. While there is no correlation between the quenched fraction and angular separation from the cluster's overall center of mass, there is a correlation between the quenched fraction and angular separation from the center of the nearest of the two mass components for the less-massive galaxies. This suggests that environmental quenching processes are in place at z ∼ 1, and that dwarf galaxies are more affected by those processes than massive galaxies.

Abstract Copyright: © 2026. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Galaxy quenching - Galaxy clusters - Galaxy evolution - Star formation - Galaxies

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 1

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