167 citations · 699 across the 21 of their papers we have counts for
8 papers · 1 filter
A Search for Dust in the Outflow of the HH212 Class 0 Protostellar System
Adele L. Plunkett, Per Bjerkeli, Jon P. Ramsey +2
Perhaps the most visually striking phenomenon during star formation is the ejection of material along the direction of the protostar's rotational axis. Observed in the form of mole…
The Asymmetric Bipolar Fe II Jet and H2 Outflow of TMC1A Resolved with JWST's NIRSpec IFU
Korash Assani, Daniel Harsono, Jon Ramsey +10
(abridged) Protostellar outflows exhibit large variations in their structure depending on the observed gas emission. This study analyzes the atomic jet and molecular outflow in the…
JWST Peers into the Class I Protostar TMC1A: Atomic Jet and Spatially Resolved Dissociative Shock Region
Daniel Harsono, Per Bjerkeli, Jon Ramsey +6
Outflows and winds launched from young stars play a crucial role in the evolution of protostars and the early stages of planet formation. However, the specific details of the mecha…
Kinematics around the B335 protostar down to au scales
Per Bjerkeli, Jon P. Ramsey, Daniel Harsono +6
Context. The relationship between outflow launching and formation of accretion disks around young stellar objects is still not entirely understood, which is why spectrally and spat…
MHD simulations of the formation and propagation of protostellar jets to observational length scales
Jon P. Ramsey, David A. Clarke
We present 2.5-D global, ideal MHD simulations of magnetically and rotationally driven protostellar jets from Keplerian accretion discs, wherein only the initial magnetic field str…
Evidence for the start of planet formation in a young circumstellar disk
Daniel Harsono, Per Bjerkeli, Matthijs H. D. van der Wiel +4
The growth of dust grains in protoplanetary disks is a necessary first step towards planet formation. This growth has been inferred via observations of thermal dust emission toward…