activity
20022026
most citedMolecular oxygen in the rho Ophiuchi cloud

142 citations · 1.6k across the 53 of their papers we have counts for

collaborators

53 papers

astro-ph.EP2026

Unveiling the Trans-Neptunian Region with the SKA

Pablo Santos-Sanz, Yücel Kilic, Thomas G. Müller +3

We explore the potential of the SKA staged delivery AA4 (SKA-AA4) to detect and characterise the thermal emission of trans-Neptunian objects (TNOs) and Centaurs at centimetre wavel…

astro-ph.GA2026

Oxygen in the protostellar clump OMC-2 FIR4

Jorma Harju, Paola Caselli, Rolf Güsten +6

Atomic oxygen (OI), OH, H2O, and CO are the main carriers of oxygen in dense interstellar gas and important coolants of shocks associated with protostellar outflows. We determine t…

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.GA2023

Nuclear spin ratios of deuterated ammonia in prestellar cores. LAsMA observations of H-MM1 and Oph D

Jorma Harju, Jaime E. Pineda, Olli Sipilä +6

We determine the ortho/para ratios of NH2D and NHD2 in two dense, starless cores, where their formation is supposed to be dominated by gas-phase reactions, which, in turn, is predi…

astro-ph.GA2023

Initial conditions of star formation at 2000 au: physical structure and NH depletion of three early-stage cores

Yuxin Lin, Silvia Spezzano, Jaime E. Pineda +5

Pre-stellar cores represent a critical evolutionary phase in low-mass star formation. We aim to unveil the detailed thermal structure and density distribution of three early-stage…

astro-ph.GA2022★ 35 cited

An Interferometric View of H-MM1. I. Direct Observation of NH3 Depletion

Jaime E. Pineda, Jorma Harju, Paola Caselli +14

Spectral lines of ammonia, NH, are useful probes of the physical conditions in dense molecular cloud cores. In addition to advantages in spectroscopy, ammonia has also been sug…