A major asymmetric ice trap in a planet-forming disk - IV. Nitric oxide gas and a lack of CN tracing sublimating ices and a C/O ratio <1

Open Access

Fig. 2

Continuum-subtracted and stacked spectra of the six NO transitions detected inside 115 AU. Left: Three NO lines at 350.7 GHz, indicated with the thick black vertical line, are blended with methanol (dotted grey line). Right: Two NO lines at 351.05 GHz are slightly blended with the final NO line at 351.04 GHz.

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