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- W4376134475 abstract "Carbon is an essential element for life but how much can be delivered to young planets is still an open question. The chemical characterization of planet-forming disks is a crucial step in our understanding of the diversity and habitability of exoplanets. Very low-mass stars (less than 0.2 M⊙) are interesting targets because they host a rich population of terrestrial planets. Here we present the James Webb Space Telescope detection of abundant hydrocarbons in the disk of a very low-mass star obtained as part of the Mid-InfraRed Instrument mid-INfrared Disk Survey (MINDS). In addition to very strong and broad emission from C2H2 and its 13C12CH2 isotopologue, C4H2, benzene and possibly CH4 are identified, but water, polycyclic aromatic hydrocarbons and silicate features are weak or absent. The lack of small silicate grains indicates that we can look deep down into this disk. These detections testify to an active warm hydrocarbon chemistry with a high C/O ratio larger than unity in the inner 0.1 astronomical units (AU) of this disk, perhaps due to destruction of carbonaceous grains. The exceptionally high C2H2/CO2 and C2H2/H2O column density ratios indicate that oxygen is locked up in icy pebbles and planetesimals outside the water iceline. This, in turn, will have important consequences for the composition of forming exoplanets. Highly abundant hydrocarbons in a very low-mass star’s disk are detected using the JWST. This unique chemical composition is probably due to the destruction of carbon grains, and the resulting high gaseous C/O ratio may have a profound impact on the composition of growing exoplanets." @default.
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- W4376134475 date "2023-05-11" @default.
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- W4376134475 title "A rich hydrocarbon chemistry and high C to O ratio in the inner disk around a very low-mass star" @default.
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- W4376134475 cites W2055586285 @default.
- W4376134475 cites W2074255988 @default.
- W4376134475 cites W2089398060 @default.
- W4376134475 cites W2092856666 @default.
- W4376134475 cites W2117647993 @default.
- W4376134475 cites W2119541020 @default.
- W4376134475 cites W2134663773 @default.
- W4376134475 cites W2145988944 @default.
- W4376134475 cites W2154764048 @default.
- W4376134475 cites W2194937049 @default.
- W4376134475 cites W2294949775 @default.
- W4376134475 cites W2395172868 @default.
- W4376134475 cites W2943843177 @default.
- W4376134475 cites W2963604282 @default.
- W4376134475 cites W3097993652 @default.
- W4376134475 cites W3098000779 @default.
- W4376134475 cites W3099082083 @default.
- W4376134475 cites W3099333806 @default.
- W4376134475 cites W3099356428 @default.
- W4376134475 cites W3100228619 @default.
- W4376134475 cites W3100357891 @default.
- W4376134475 cites W3100404708 @default.
- W4376134475 cites W3101494089 @default.
- W4376134475 cites W3101638317 @default.
- W4376134475 cites W3102151153 @default.
- W4376134475 cites W3102250737 @default.
- W4376134475 cites W3102379550 @default.
- W4376134475 cites W3102494626 @default.
- W4376134475 cites W3102839958 @default.
- W4376134475 cites W3103697591 @default.
- W4376134475 cites W3103877120 @default.
- W4376134475 cites W3104535726 @default.
- W4376134475 cites W3105092603 @default.
- W4376134475 cites W3106461171 @default.
- W4376134475 cites W3111016316 @default.
- W4376134475 cites W3119060971 @default.
- W4376134475 cites W3120759446 @default.
- W4376134475 cites W3141872910 @default.