Abundant hydrocarbons in the disk around a very-low-mass star
- Author(s)
- A. M. Arabhavi, I. Kamp, Th Henning, E. F. van Dishoeck, V. Christiaens, D. Gasman, A. Perrin, M. Güdel, B. Tabone, J. Kanwar, L. B.F.M. Waters, I. Pascucci, M. Samland, G. Perotti, G. Bettoni, S. L. Grant, P. O. Lagage, T. P. Ray, B. Vandenbussche, O. Absil, I. Argyriou, D. Barrado, A. Boccaletti, J. Bouwman, A. Caratti O Garatti, A. M. Glauser, F. Lahuis, M. Mueller, G. Olofsson, E. Pantin, S. Scheithauer, M. Morales-Calderón, R. Franceschi, H. Jang, N. Pawellek, D. Rodgers-Lee, J. Schreiber, K. Schwarz, M. Temmink, M. Vlasblom, G. Wright, L. Colina, G. Östlin
- Abstract
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.
- Organisation(s)
- Department of Astrophysics
- External organisation(s)
- University of Groningen, Max-Planck-Institut für Astronomie, Leiden University, Max-Planck-Institut für extraterrestrische Physik, Université de Liège, Katholieke Universiteit Leuven, Centre National De La Recherche Scientifique (CNRS), Eidgenössische Technische Hochschule Zürich, Université Paris XI - Paris-Sud, Österreichische Akademie der Wissenschaften (ÖAW), Technische Universität Graz, Radboud University, SRON Netherlands Institute for Space Research , University of Arizona, Université Paris Saclay, Dublin Institute for Advanced Studies, Instituto Nacional de Técnica Aeroespacial, Université de recherche Paris Sciences et Lettres, INAF Astronomical Observatory of Capodimonte , Stockholm University, HUN-REN Hungarian Research Network, The Royal Observatory, Edinburgh
- Journal
- Science
- Volume
- 384
- Pages
- 1086-1090
- No. of pages
- 5
- ISSN
- 0036-8075
- DOI
- https://doi.org/10.1126/science.adi8147
- Publication date
- 06-2024
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103003 Astronomy, 103004 Astrophysics
- ASJC Scopus subject areas
- General
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/038694be-b55c-412a-9ae3-631749ba154d