Star formation is a multi-scale, multi-physics problem ranging from the size scale of
molecular clouds (∼ 10 ∼10 s pc) down to the size scales of dense prestellar cores (∼ 0.1 …

Context. In the past few years, there has been a rise in the detection of streamers,
asymmetric flows of material directed toward the protostellar disk with material from outside …

To date, about two dozen low-mass embedded protostars exhibit rich spectra with lines of
complex organic molecules (COMs). These protostars seem to possess a different …

Aim. We have investigated the gas organization within the paradigmatic Integral Shape
Filament (ISF) in Orion in order to decipher whether or not all filaments are bundles of fibers …

The envelopes and disks that surround protostars reflect the initial conditions of star and
planet formation and govern the assembly of stellar masses. Characterizing these structures …

Complex organic molecules have been observed for decades in the interstellar medium.
Some of them might be considered as small bricks of the macromolecules at the base of …

Context. Gas phase Elemental abundances in molecular CloudS (GEMS) is an IRAM 30-m
Large Program aimed at determining the elemental abundances of carbon (C), oxygen (O) …

Context. The gas kinetic temperature (TK) determines the physical and chemical evolution of
the interstellar medium (ISM). However, obtaining reliable TK estimates usually requires …

Aims. We aim to characterize and compare the molecular-line emission of three clouds
whose star-formation rates span one order of magnitude: California, Perseus, and Orion A …

Abstract pyspeckit is a toolkit and library for spectroscopic analysis in Python. We describe
the pyspeckit package and highlight some of its capabilities, such as interactively fitting a …