Détail du document
Identifiant
oai:arXiv.org:2406.14293
Sujet
Astrophysics - Earth and Planetary... Astrophysics - Solar and Stellar A...Auteur
Arabhavi, A. M. Kamp, I. Henning, Th. van Dishoeck, E. F. Christiaens, V. Gasman, D. Perrin, A. Güdel, M. Tabone, B. Kanwar, J. Waters, L. B. F. M. Pascucci, I. Samland, M. Perotti, G. Bettoni, G. Grant, S. L. Lagage, P. O. Ray, T. P. Vandenbussche, B. Absil, O. Argyriou, I. Barrado, D. Boccaletti, A. Bouwman, J. Garatti, A. Caratti o Glauser, A. M. Lahuis, F. Mueller, M. Olofsson, G. Pantin, E. Scheithauer, S. Morales-Calderón, M. Franceschi, R. Jang, H. Pawellek, N. Rodgers-Lee, D. Schreiber, J. Schwarz, K. Temmink, M. Vlasblom, M. Wright, G. Colina, L. Östlin, G.Catégorie
sciences : astrophysique
Année
2024
Date de référencement
26/06/2024
Mots clés
planets astrophysicsRésumé
Very low-mass stars (those <0.3 solar masses) host orbiting terrestrial planets more frequently than other types of stars, but the compositions of those planets are largely unknown.
We use mid-infrared spectroscopy with the James Webb Space Telescope 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 identify emission from 13 carbon-bearing molecules including ethane and benzene.
We derive large column densities of hydrocarbons indicating that we probe deep into the disk.
The high carbon to oxygen ratio we infer indicates radial transport of material within the disk, which we predict would affect the bulk composition of any planets forming in the disk.
;Comment: Published, 36 pages, 8 figures
Arabhavi, A. M.,Kamp, I.,Henning, Th.,van Dishoeck, E. F.,Christiaens, V.,Gasman, D.,Perrin, A.,Güdel, M.,Tabone, B.,Kanwar, J.,Waters, L. B. F. M.,Pascucci, I.,Samland, M.,Perotti, G.,Bettoni, G.,Grant, S. L.,Lagage, P. O.,Ray, T. P.,Vandenbussche, B.,Absil, O.,Argyriou, I.,Barrado, D.,Boccaletti, A.,Bouwman, J.,Garatti, A. Caratti o,Glauser, A. M.,Lahuis, F.,Mueller, M.,Olofsson, G.,Pantin, E.,Scheithauer, S.,Morales-Calderón, M.,Franceschi, R.,Jang, H.,Pawellek, N.,Rodgers-Lee, D.,Schreiber, J.,Schwarz, K.,Temmink, M.,Vlasblom, M.,Wright, G.,Colina, L.,Östlin, G., 2024, Abundant hydrocarbons in the disk around a very-low-mass star
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