A first look at a complete view of spatially resolved star formation at 1
Authors
Jasleen Matharu
Lu Shen
Irene Shivaei
Pascal A. Oesch
Casey Papovich
Gabriel Brammer
Naveen A. Reddy
Yingjie Cheng
Pieter van Dokkum
Steven L. Finkelstein
Nimish P. Hathi
Jeyhan S. Kartaltepe
Anton M. Koekemoer
Jorryt Matthee
Nor Pirzkal
Stephen M. Wilkins
Michael A. Wozniak
Mengyuan Xiao
Abstract
[abridged] The previously inaccessible star formation tracer Pa$α$ can now be spatially resolved by JWST NIRCam slitless spectroscopy in distant galaxies up to cosmic noon. In the first study of its kind, we combine JWST NGDEEP NIRISS and FRESCO NIRCam slitless spectroscopy to provide the first direct comparison of spatially resolved dust-obscured (traced by Pa$α$) versus unobscured (traced by H$α$) star formation across the main sequence. We stack Pa$α$ and H$α$ emission-line maps, along with stellar continuum images at both wavelengths of 31 galaxies at 1
