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The detection of methyl ketene (CH3CHCO) was reported in 2023 by
Fuentetaja and co-workers.
As with a number of other recent detections from the
Grupo de Astrofísica Molecular at the Instituto de
Física Fundamental
in Madrid,
this one was drawn from the
QUIJOTE line survey of
TMC-1 made with the
Yebes 40m telescope. A previous search by
Bermúdez et al. reported in 2018
using lower resolution observations was not able to detect methyl ketene toward TMC-1,
Sgr B2,
Orion KL, and
B-1b, even though the observations were made with
capable telescopes
(ALMA and the
IRAM 30m telescope). As a
very recent detection, confirmation of methyl ketene and new searches for it in sources other than TMC-1 await.
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