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

AstrochemistryProtoplanetary disksISM: moleculesSubmillimeter: planetary systemsStars: individual: IRS 48Astrophysics - Earth and Planetary AstrophysicsAstrophysics - Solar and Stellar Astrophysics