Dissecting the Supercritical Filaments Embedded in the 0.5 pc Subsonic Region of Barnard 5

@article{Schmiedeke2021DissectingTS,
  title={Dissecting the Supercritical Filaments Embedded in the 0.5 pc Subsonic Region of Barnard 5},
  author={Anika Schmiedeke and Jaime E. Pineda and Paola Caselli and H{\'e}ctor G. Arce and Gary A. Fuller and Alyssa A. Goodman and Mar{\'i}a Jos{\'e} Maureira and Stella S. R. Offner and Dominique M. Segura-Cox and Daniel Seifried},
  journal={The Astrophysical Journal},
  year={2021},
  volume={909}
}
We characterize in detail the two ∼0.3 pc long filamentary structures found within the subsonic region of Barnard 5. We use combined Robert C. Byrd Green Bank Telescope and Very Large Array observations of the molecular lines NH3(1,1) and (2,2) at a resolution of 1800 au, as well as James Clerk Maxwell Telescope continuum observations at 850 and 450 μm at a resolution of 4400 and 3000 au, respectively. We find that both filaments are highly supercritical with a mean mass per unit length, M/L… 

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References

SHOWING 1-10 OF 85 REFERENCES

The Equilibrium of Polytropic and Isothermal Cylinders.

Characterizing the properties of nearby molecular filaments observed with Herschel

Context. Molecular filaments have received special attention recently thanks to new observational results on their properties. In particular, our early analysis of filament properties from Herschel

Helical fields and filamentary molecular clouds — II. Axisymmetric stability and fragmentation

ABSTRA C T In Paper I (this issue), we constructed models of filamentary molecular clouds that are truncated by a realistic external pressure and contain a rather general helical magnetic field. We

Characterizing interstellar filaments with Herschel in IC 5146 {Letter]

We provide a first look at the results of the Herschel Gould Belt survey toward the IC 5146 molecular cloud and present a preliminary analysis of the filamentary structure in this region. The column

APLpy: Astronomical Plotting Library

  • ApJL,
  • 2011

The Green Bank Ammonia Survey (GAS): First Results of NH3 mapping the Gould Belt

  • 2017

The CARMA-NRO Orion Survey

We present the first results from a new, high-resolution 12CO(1–0), 13CO(1–0), and C18O(1–0) molecular-line survey of the Orion A cloud, hereafter referred to as the CARMA-NRO Orion Survey. CARMA

The formation of a quadruple star system with wide separation

TLDR
Observations of a wide-separation quadruple system composed of a young protostar and three gravitationally bound dense gas condensations suggest that filament fragmentation on length scales of about 5,000 astronomical units offers a viable pathway to the formation of multiple systems.

The Green Bank Ammonia Survey: First Results of NH3 Mapping of the Gould Belt

We present an overview of the first data release (DR1) and first-look science from the Green Bank Ammonia Survey (GAS). GAS is a Large Program at the Green Bank Telescope to map all Gould Belt
...