Astrophysics - Earth and Planetary Astrophysics; Astrophysics - Solar; and Stellar Astrophysics
Abstract :
[en] Very-low-mass stars (those less than 0.3 solar masses) host orbiting terrestrial planets more frequently than other types of stars. The compositions of those planets are largely unknown but are expected to relate to the protoplanetary disk in which they form. We used James Webb Space Telescope mid-infrared spectroscopy to investigate the chemical composition of the planet-forming disk around ISO-ChaI 147, a 0.11-solar-mass star. The inner disk has a carbon-rich chemistry; we identified emission from 13 carbon-bearing molecules, including ethane and benzene. The high column densities of hydrocarbons indicate that the observations probe deep into the disk. The high carbon-to-oxygen ratio indicates radial transport of material within the disk, which we predict would affect the bulk composition of any planets forming in the disk.
Research Center/Unit :
STAR - Space sciences, Technologies and Astrophysics Research - ULiège
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Arabhavi, A. M.; University of Groningen, Kapteyn Astronomical Institute
Kamp, I.; University of Groningen, Kapteyn Astronomical Institute
Henning, Th.; Max-Planck-Institute for Astronomy, Heidelberg
van Dishoeck, E. F.; Leiden Observatory, Max-Planck-Institute for Extraterrestrial Physics, Garching
Christiaens, Valentin ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO) > Planetary & Stellar systems Imaging Laboratory
Gasman, D.; Institute of Astronomy, Katholieke Universiteit Leuven, Leuven 3001, Belgium.,
Perrin, A.; Laboratoire de Météorologie Dynamique, Centre National de la Recherche Scientifique, Palaiseau F-91120, France.
Güdel, M.; Max-Planck-Institute for Astronomy, Heidelberg, University of Vienna, Department of Astronomy, -
Tabone, B.; Université Paris-Saclay, Centre National de la Recherche Scientifique, Institut d'Astrophysique Spatiale, Orsay 91405, France.,
Kanwar, J.; University of Groningen, Kapteyn Astronomical Institute, Austrian Institute of Space Science Research, -
Waters, L. B. F. M.; Department of Astrophysics, Institute for Mathematics, Astrophysics and Particle Physics, Radboud University, Nijmegen 6500 GL, Netherlands., SRON Netherlands Institute for Space Research, Leiden 2333 CA, Netherlands., Free-Electron Lasers for Infrared eXperiments Laboratory, Institute for Molecules and Materials, Radboud University, Nijmegen 6525 ED, Netherlands.,
Pascucci, I.; University of Arizona, Department of Planetary Sciences
Samland, M.; Max-Planck-Institute for Astronomy, Heidelberg
Perotti, G.; Max-Planck-Institute for Astronomy, Heidelberg
Bettoni, G.; Max-Planck-Institute for Extraterrestrial Physics, Garching
Grant, S. L.; Max-Planck-Institute for Extraterrestrial Physics, Garching
Lagage, P. O.; Université Paris-Saclay, Université Paris Cité, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Centre National de la Recherche Scientifique, Astrophysique Instrumentation et Modélisation, Gif-sur-Yvette F-91191, France.
Ray, T. P.; Dublin Institute for Advanced Studies, Dublin D02 XF86, Ireland.
Vandenbussche, B.; Institute of Astronomy, Katholieke Universiteit Leuven, Leuven 3001, Belgium.,
Absil, Olivier ; Université de Liège - ULiège > Département d'astrophysique, géophysique et océanographie (AGO)
Argyriou, I.; Institute of Astronomy, Katholieke Universiteit Leuven, Leuven 3001, Belgium.,
Barrado, D.; Centro de Astrobiología, Centro Superior de Investigaciones Científicas - Instituto Nacional de Técnica Aeroespacial, Villanueva de la Cañada 28692, Spain.,
Boccaletti, A.; Laboratoire d'Etudes Spatiales de d'Instrumentation en Astrophysique, Observatoire de Paris, Meudon 92195, France.,
Bouwman, J.; Max-Planck-Institute for Astronomy, Heidelberg
Caratti o Garatti, A.; Dublin Institute for Advanced Studies, Dublin D02 XF86, Ireland., Osservatorio Astronomico di Capodimonte, Istituto Nazionale di Astrofisica, Napoli 80131, Italy.,
Glauser, A. M.; Institute for Particle Physics and Astrophysics, Eidgenössische Technische Hochschule Zürich, Zürich 8093, Switzerland.,
Lahuis, F.; Netherlands Institute for Space Research
Mueller, M.; University of Groningen, Kapteyn Astronomical Institute
Olofsson, G.; Department of Astronomy, Stockholm University, Stockholm 10691, Sweden.
Pantin, E.; Université Paris-Saclay, Université Paris Cité, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Centre National de la Recherche Scientifique, Astrophysique Instrumentation et Modélisation, Gif-sur-Yvette F-91191, France.,
Scheithauer, S.; Max-Planck-Institute for Astronomy, Heidelberg
Morales-Calderón, M.; Centro de Astrobiología, Centro Superior de Investigaciones Científicas - Instituto Nacional de Técnica Aeroespacial, Villanueva de la Cañada 28692, Spain.,
Franceschi, R.; Max-Planck-Institute for Astronomy, Heidelberg
Jang, H.; Department of Astrophysics, Institute for Mathematics, Astrophysics and Particle Physics, Radboud University, Nijmegen 6500 GL, Netherlands.,
Pawellek, N.; University of Vienna, Department of Astronomy, -
Rodgers-Lee, D.; Dublin Institute for Advanced Studies, Dublin D02 XF86, Ireland.,
Schreiber, J.; Max-Planck-Institute for Astronomy, Heidelberg
Schwarz, K.; Max-Planck-Institute for Astronomy, Heidelberg
Temmink, M.; Leiden Observatory
Vlasblom, M.; Leiden Observatory
Wright, G.; Royal Observatory Edinburgh
Colina, L.; Centro de Astrobiología, Centro Superior de Investigaciones Científicas - Instituto Nacional de Técnica Aeroespacial, Torrejón de Ardoz E-28850, Spain.
Östlin, G.; Department of Astronomy, Stockholm University, Stockholm 10691, Sweden.,
H2020 - 832428 - Origins - From Planet-Forming Disks to Giant Planets
Funders :
ERC - European Research Council BELSPO - Belgian Federal Science Policy Office F.R.S.-FNRS - Fonds de la Recherche Scientifique European Union
Commentary :
This is the author's version of the work. It is posted here by permission of the AAAS for personal use, not for redistribution. The definitive version was published in Science on 6 Jun 2024, DOI: 10.1126/science.adi8147.
