Evolution of the SizeMass Relation of Star-forming Galaxies Since z = 5.5 Revealed by CEERS Academic Article uri icon

abstract

  • Abstract We combine deep imaging data from the CEERS early release JWST survey and Hubble Space Telescopeimaging from CANDELS to examine the sizemass relation of star-forming galaxies and the morphologyquenching relation at stellar masses M 109.5 M over the redshift range 0.5 < z < 5.5. In this study with a sample of 2450 galaxies, we separate star-forming and quiescent galaxies based on their star formation activity and confirm that star-forming and quiescent galaxies have different morphologies out to z = 5.5, extending the results of earlier studies out to higher redshifts. We find that star-forming and quiescent galaxies have typical Srsic indices of n 1.3 and n 4.3, respectively. Focusing on star-forming galaxies, we find that the slope of the sizemass relation is nearly constant with redshift, as was found previously, but shows a modest increase at z 4.2. The intercept in the sizemass relation declines out to z = 5.5 at rates that are similar to what earlier studies found. The intrinsic scatter in the sizemass relation is relatively constant out to z = 5.5.

published proceedings

  • The Astrophysical Journal

author list (cited authors)

  • Ward, E., de la Vega, A., Mobasher, B., McGrath, E. J., Iyer, K. G., Calabr, A., ... Pirzkal, N.

complete list of authors

  • Ward, Ethan||de la Vega, Alexander||Mobasher, Bahram||McGrath, Elizabeth J||Iyer, Kartheik G||Calabrò, Antonello||Costantin, Luca||Dickinson, Mark||Holwerda, Benne W||Huertas-Company, Marc||Hirschmann, Michaela||Lucas, Ray A||Pandya, Viraj||Wilkins, Stephen M||Yung, LY Aaron||Haro, Pablo Arrabal||Bagley, Micaela B||Finkelstein, Steven L||Kartaltepe, Jeyhan S||Koekemoer, Anton M||Papovich, Casey||Pirzkal, Nor

publication date

  • February 2024