Europlanet Science Congress 2020
Virtual meeting
21 September – 9 October 2020
Europlanet Science Congress 2020
Virtual meeting
21 September – 9 October 2020
EPSC Abstracts
Vol.14, EPSC2020-361, 2020
https://doi.org/10.5194/epsc2020-361
Europlanet Science Congress 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Evidence of Enhanced Ionization During Early Planet Formation

Kamber Schwarz1, Sebastien Maret2, Charlene Lefevre3, Philippe Andre4, Arnaud Belloche5, Edwin Bergin6, and Claudio Codella7
Kamber Schwarz et al.
  • 1University of Arizona, Lunar and Planetary Laboratory, United States of America (kschwarz@email.arizona.edu)
  • 2University of Grenoble Alpes, Grenoble, France
  • 3Institut de Radioastronomie Millimétrique, Saint-Martin-d’Hères, France
  • 4Laboratoire d’Astrophysique (AIM), CEA, CNRS, Université Paris-Saclay, Université Paris Diderot, Sorbonne Paris Cité, Gif-sur-Yvette, France
  • 5Max-Planck-Institut für Radioastronomie, Bonn, Germany
  • 6University of Michigan, Department of Astronomy, United States of America
  • 7INAF, Osservatorio Astrofisico di Arcetri, Firenze, Italy

There is growing observational evidence that giant planet formation happens early, within a million years of the coalescence of the protoplanetary disk. Ionization rate is one of the most important parameters controlling both the chemical and dynamical processes in these disks. What few observational constrains on ionization currently exists suggest overall low ionization, limiting the processes able to take place. This is seemingly in conflict with chemical models which demonstrate the importance of ionization for the chemical processing of volatile carbon and observations which suggest such processing is ubiquitous and happens quickly. I will present new NOEMA observations which, when combined with chemical modeling, are indicative of enhanced ionization rates in the envelopes of three Class I protostars.  I will then discuss the potential impact of this early enhancement on the chemical composition of the material available to forming planets.

How to cite: Schwarz, K., Maret, S., Lefevre, C., Andre, P., Belloche, A., Bergin, E., and Codella, C.: Evidence of Enhanced Ionization During Early Planet Formation, Europlanet Science Congress 2020, online, 21 September–9 Oct 2020, EPSC2020-361, https://doi.org/10.5194/epsc2020-361, 2020