2 papers
astro-ph.GA2025
Statistical nuclear spin ratios of deuterated ammonia in the pre-stellar core L1544
Jorma Harju, Paola Caselli, Olli Sipilae +6
We determined the ortho/para (o/p) ratios of NH2D and NHD2 in the archetypical pre-stellar core L1544. The core was observed in the two lowest rotational lines of ortho- and para-N…
astro-ph.GA2019
Efficient methanol production on the dark side of a prestellar core
Jorma Harju, Jaime E. Pineda, Anton I. Vasyunin +23
We present ALMA maps of the starless molecular cloud core Ophiuchus/H-MM1 in the lines of deuterated ammonia (ortho-NH2D), methanol (CH3OH), and sulphur monoxide (SO). The dense co…