2024Sci...384.1086A

Query : 2024Sci...384.1086A

2024Sci...384.1086A - Science, 384, 1086-1090 (2024/June-0)

Abundant hydrocarbons in the disk around a very-low-mass star.

ARABHAVI A.M., KAMP I., HENNING T., VAN DISHOECK E.F., CHRISTIAENS V., GASMAN D., PERRIN A., GUDEL 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., CARATTI O GARATTI A., GLAUSER A.M., LAHUIS F., MUELLER M., OLOFSSON G., PANTIN E., SCHEITHAUER S., MORALES-CALDERON M., FRANCESCHI R., JANG H., PAWELLEK N., RODGERS-LEE D., SCHREIBER J., SCHWARZ K., TEMMINK M., VLASBLOM M., WRIGHT G., COLINA L. and OSTLIN G.

Abstract (from CDS):

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.

Abstract Copyright: © 2024 American Association for the Advancement of Science. All rights reserved. AAAS is a partner of HINARI, AGORA, OARE, CHORUS, CLOCKSS, CrossRef and COUNTER.

Journal keyword(s):

Simbad objects: 5

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Number of rows : 5
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Cha 1 MoC 11 06 48 -77 18.0           ~ 1266 1
2 ISO-ChaI 147 Or* 11 08 26.4697073400 -77 15 55.074237156         16.81 M5.75 51 0
3 V* GW Lup Or* 15 46 44.7290527536 -34 30 35.677420056   13.8       M1.5e 201 0
4 [PGZ2001] J160532.1-193315 LM* 16 05 32.1520016280 -19 33 16.012868364           M5e 73 0
5 TRAPPIST-1 LM* 23 06 29.3684948589 -05 02 29.037301866     18.798 16.466 14.024 M7.5e 1306 0

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