Related Experiment Video
Updated: Jul 2, 2025
07:54
Experimental Methods of Dust Charging and Mobilization on Surfaces with Exposure to Ultraviolet Radiation or Plasmas
Published on: April 3, 2018
8.2K
A far-ultraviolet-driven photoevaporation flow observed in a protoplanetary disk.
Olivier Berné1, Emilie Habart2, Els Peeters3,4,5
1Institut de Recherche en Astrophysique et Planétologie, Université de Toulouse, Centre National de la Recherche Scientifique (CNRS), Centre National d'Etudes Spatiales, 31028 Toulouse, France.
Science (New York, N.Y.)
|February 29, 2024
Summary
Massive stars
Area of Science:
- Astrophysics
- Exoplanetary Science
Background:
- Low-mass stars form in clusters with massive stars emitting far-ultraviolet (FUV) radiation.
- FUV radiation is theorized to create photodissociation regions (PDRs) on protoplanetary disks, impacting planet formation.
Purpose of the Study:
- Investigate the impact of FUV radiation on a protoplanetary disk.
- Quantify gas mass-loss rates in FUV-irradiated disks.
Main Methods:
- Utilized James Webb Space Telescope and Atacama Large Millimeter Array observations.
- Analyzed emission lines from the PDR to determine gas physical conditions.
- Modeled kinematics and excitation of gas emission lines.
Main Results:
- Detected emission lines from the PDR, confirming its presence.
- Constrained the physical conditions (temperature, density) within the PDR gas.
- Quantified a significant gas mass-loss rate due to FUV irradiation.
Conclusions:
- FUV irradiation can induce rapid gas removal from protoplanetary disks.
- This gas depletion occurs within a timescale (<1 million years) that can significantly affect giant planet formation.
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