Survey of Orion Disks with ALMA (SODA)
- Autor(en)
- S. E. van Terwisga, A. Hacar
- Abstrakt
Context. External far-ultraviolet (FUV) irradiation of protoplanetary disks has an important impact on their evolution and ability to form planets. However, nearby (< 300 pc) star-forming regions lack sufficiently massive young stars, while the Trapezium cluster and NGC 2024 have complicated star-formation histories and their O-type stars'intense radiation fields (> 104G0) destroy disks too quickly to study this process in detail. Aims. We study disk mass loss driven by intermediate (10-1000G0) FUV radiation fields in L1641 and L1647, where it is driven by more common A0- and B-type stars. Methods. Using the large (N = 873) sample size offered by the Survey of Orion Disks with ALMA (SODA), we searched for trends in the median disk dust mass with FUV field strength across the region as a whole and in two separate regions containing a large number of irradiated disks. Results. For radiation fields between 1-100G0, the median disk mass in the most irradiated disks drops by a factor ~2 over the lifetime of the region, while the 95th percentile of disk masses drops by a factor 4 over this range. This effect is present in multiple populations of stars, and localized in space, to within 2 pc of ionizing stars. We fitted an empirical irradiation -disk mass relation for the first time: Mdust,median = -1.3-0.13+0.14 log10(FFUV/G0) + 5.2-0.19+0.18. Conclusions. This work demonstrates that even intermediate FUV radiation fields have a significant impact on the evolution of protoplanetary disks.
- Organisation(en)
- Institut für Astrophysik
- Externe Organisation(en)
- Max-Planck-Institut für Astronomie
- Journal
- Astronomy & Astrophysics
- Band
- 673
- Anzahl der Seiten
- 5
- ISSN
- 0004-6361
- DOI
- https://doi.org/10.1051/0004-6361/202346135
- Publikationsdatum
- 05-2023
- Peer-reviewed
- Ja
- ÖFOS 2012
- 103003 Astronomie, 103004 Astrophysik
- Schlagwörter
- ASJC Scopus Sachgebiete
- Astronomy and Astrophysics, Space and Planetary Science
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/ed570122-2b6b-4dee-852a-d92d4e111328