Fragmentation of star-forming filaments in the X-shaped nebula of the California molecular cloud

@article{Zhang2020FragmentationOS,
  title={Fragmentation of star-forming filaments in the X-shaped nebula of the California molecular cloud},
  author={Guo Yin Zhang and Ph. Andre' and A. Menshchikov and Ke Wang},
  journal={arXiv: Solar and Stellar Astrophysics},
  year={2020}
}
Dense molecular filaments are central to the star formation process, but the detailed manner in which they fragment into prestellar cores is not yet well understood. Here, we investigate the fragmentation properties and dynamical state of several star-forming filaments in the X-shape Nebula region of the California MC, in an effort to shed some light on this issue. We used multi-wavelength far-infrared images from Herschel and the getsources and getfilaments extraction methods to identify dense… Expand

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References

SHOWING 1-10 OF 89 REFERENCES
X Marks the Spot: Nexus of Filaments, Cores, and Outflows in a Young Star-Forming Region
We present a multiwavelength investigation of a region of a nearby giant molecular cloud that is distinguished by a minimal level of star formation activity. With our new 12CO(J=2-1) and 13CO(J=2-1)Expand
Probing fragmentation and velocity sub-structure in the massive NGC 6334 filament with ALMA
Herschel surveys of Galactic clouds support a paradigm for low-mass star formation in which dense filaments play a crucial role. The detailed fragmentation properties of star-forming filaments remainExpand
Resolving the fragmentation of high line-mass filaments with ALMA: the integral shaped filament in Orion A
We study the fragmentation of the nearest high line-mass filament, the integral shaped filament (ISF, line-mass $\sim$ 400 M$_\odot$ pc$^{-1}$) in the Orion A molecular cloud. We have observed a 1.6Expand
SDC13 infrared dark clouds: longitudinally collapsing filaments?
Formation of stars is now believed to be tightly linked to the dynamical evolution of interstellar filaments in which they form. In this paper we analyze the density structure and kinematics of aExpand
CARMA LARGE AREA STAR FORMATION SURVEY: OBSERVATIONAL ANALYSIS OF FILAMENTS IN THE SERPENS SOUTH MOLECULAR CLOUD
We present the N_2H^+ (J = 1 → 0) map of the Serpens South molecular cloud obtained as part of the CARMA Large Area Star Formation Survey. The observations cover 250 arcmin^2 and fully sampleExpand
Filamentary structure of star-forming complexes
The nearest young stellar groups are associated with hubs of column density exceeding 1022 cm?2, according to recent observations. These hubs radiate multiple filaments of parsec length, having lowerExpand
Interstellar filaments and star formation
Abstract Recent studies of the nearest star-forming clouds of the Galaxy at submillimeter wavelengths with the Herschel Space Observatory have provided us with unprecedented images of the initialExpand
A Production Mechanism for Clusters of Dense Cores
Collapse and fragmentation processes within filamentary interstellar molecular clouds are investigated in detail. A quasi-equilibrium filament fragments into dense cores separated by about 4 timesExpand
Filament Fragmentation in High-Mass Star Formation
Aims: We resolve the length-scales for filament formation and fragmentation (res. <=0.1pc), in particular the Jeans length and cylinder fragmentation scale. Methods: We observed the prototypicalExpand
The Herschel view of the dense core population in the Ophiuchus molecular cloud
Herschel observations of nearby clouds in the Gould Belt support a paradigm for low-mass star formation, starting with the generation of molecular filaments, followed by filament fragmentation, andExpand
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