TY - JOUR
T1 - XUE: Molecular Inventory in the Inner Region of an Extremely Irradiated Protoplanetary Disk
AU - Ramírez-Tannus, María Claudia
AU - Bik, Arjan
AU - Cuijpers, Lars
AU - Waters, Rens
AU - Göppl, Christiane
AU - Henning, Thomas
AU - Kamp, Inga
AU - Preibisch, Thomas
AU - Getman, Konstantin V.
AU - Chaparro, Germán
AU - Cuartas-Restrepo, Pablo
AU - de Koter, Alex
AU - Feigelson, Eric D.
AU - Grant, Sierra L.
AU - Haworth, Thomas J.
AU - Hernández, Sebastián
AU - Kuhn, Michael A.
AU - Perotti, Giulia
AU - Povich, Matthew S.
AU - Reiter, Megan
AU - Roccatagliata, Veronica
AU - Sabbi, Elena
AU - Tabone, Benoît
AU - Winter, Andrew J.
AU - McLeod, Anna F.
AU - van Boekel, Roy
AU - van Terwisga, Sierk E.
N1 - © 2023. The Author(s). Published by the American Astronomical Society. This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY), https://creativecommons.org/licenses/by/4.0/
PY - 2023/12/1
Y1 - 2023/12/1
N2 - We present the first results of the eXtreme UV Environments (XUE) James Webb Space Telescope (JWST) program, which focuses on the characterization of planet-forming disks in massive star-forming regions. These regions are likely representative of the environment in which most planetary systems formed. Understanding the impact of environment on planet formation is critical in order to gain insights into the diversity of the observed exoplanet populations. XUE targets 15 disks in three areas of NGC 6357, which hosts numerous massive OB stars, including some of the most massive stars in our Galaxy. Thanks to JWST, we can, for the first time, study the effect of external irradiation on the inner (<10 au), terrestrial-planet-forming regions of protoplanetary disks. In this study, we report on the detection of abundant water, CO,
12CO
2, HCN, and C
2H
2 in the inner few au of XUE 1, a highly irradiated disk in NGC 6357. In addition, small, partially crystalline silicate dust is present at the disk surface. The derived column densities, the oxygen-dominated gas-phase chemistry, and the presence of silicate dust are surprisingly similar to those found in inner disks located in nearby, relatively isolated low-mass star-forming regions. Our findings imply that the inner regions of highly irradiated disks can retain similar physical and chemical conditions to disks in low-mass star-forming regions, thus broadening the range of environments with similar conditions for inner disk rocky planet formation to the most extreme star-forming regions in our Galaxy.
AB - We present the first results of the eXtreme UV Environments (XUE) James Webb Space Telescope (JWST) program, which focuses on the characterization of planet-forming disks in massive star-forming regions. These regions are likely representative of the environment in which most planetary systems formed. Understanding the impact of environment on planet formation is critical in order to gain insights into the diversity of the observed exoplanet populations. XUE targets 15 disks in three areas of NGC 6357, which hosts numerous massive OB stars, including some of the most massive stars in our Galaxy. Thanks to JWST, we can, for the first time, study the effect of external irradiation on the inner (<10 au), terrestrial-planet-forming regions of protoplanetary disks. In this study, we report on the detection of abundant water, CO,
12CO
2, HCN, and C
2H
2 in the inner few au of XUE 1, a highly irradiated disk in NGC 6357. In addition, small, partially crystalline silicate dust is present at the disk surface. The derived column densities, the oxygen-dominated gas-phase chemistry, and the presence of silicate dust are surprisingly similar to those found in inner disks located in nearby, relatively isolated low-mass star-forming regions. Our findings imply that the inner regions of highly irradiated disks can retain similar physical and chemical conditions to disks in low-mass star-forming regions, thus broadening the range of environments with similar conditions for inner disk rocky planet formation to the most extreme star-forming regions in our Galaxy.
KW - Protoplanetary disks
KW - Planet formation
KW - Pre-main sequence stars
UR - http://www.scopus.com/inward/record.url?scp=85180088742&partnerID=8YFLogxK
U2 - 10.3847/2041-8213/ad03f8
DO - 10.3847/2041-8213/ad03f8
M3 - Article
SN - 2041-8205
VL - 958
SP - 1
EP - 14
JO - Astrophysical Journal Letters
JF - Astrophysical Journal Letters
IS - 2
M1 - L30
ER -