The Physical Thickness of Stellar Disks to z ∼ 2

• Published in: The Astrophysical journal Vol. 956; no. 2; pp. 147 - 157
• Main Authors: Hamilton-Campos, Kathleen A., Simons, Raymond C., Peeples, Molly S., Snyder, Gregory F., Heckman, Timothy M.
• Format: Journal Article
• Language: English
• Published: Philadelphia The American Astronomical Society 01.10.2023; IOP Publishing
• Subjects: Astrophysics; Disk galaxies; Galaxies; Galaxy evolution; High-redshift galaxies; Hubble Space Telescope; Milky Way; Optical scales; Red shift; Scale height; Space telescopes; Stars; Stars & galaxies; Thickness

In local disk galaxies such as our Milky Way, older stars generally inhabit a thicker disk than their younger counterparts. Two competing models have attempted to explain this result: one in which stars first form in thin disks that gradually thicken with time through dynamical heating, and one in w...