A Galactic-scale gas wave in the solar neighbourhood

@article{Alves2020AGG,
  title={A Galactic-scale gas wave in the solar neighbourhood},
  author={Jo{\~a}o Alves and Catherine Zucker and Alyssa A. Goodman and Joshua S. Speagle and Stefan Meingast and Thomas P. Robitaille and Douglas P. Finkbeiner and Edward F. Schlafly and Gregory M. Green},
  journal={Nature},
  year={2020},
  volume={578},
  pages={237-239}
}
For the past 150 years, the prevailing view of the local interstellar medium has been based on a peculiarity known as the Gould Belt 1 – 4 , an expanding ring of young stars, gas and dust, tilted about 20 degrees to the Galactic plane. However, the physical relationship between local gas clouds has remained unknown because the accuracy in distance measurements to such clouds is of the same order as, or larger than, their sizes 5 – 7 . With the advent of large photometric surveys 8 and the… 
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References

SHOWING 1-10 OF 32 REFERENCES
3D dynamical evolution of the interstellar gas in the Gould Belt
The dynamical evolution of the Gould Belt has been modelled in 3D and compared to the spatial and velocity distributions of all HI and H 2 clouds found within a few hundred parsecs from the Sun and
Cosmography of OB stars in the solar neighbourhood
We construct a 3D map of the spatial density of OB stars within 500 pc from the Sun using the Hipparcos catalogue and find three large-scale stream-like structures that allow a new view on the solar
A compendium of distances to molecular clouds in the Star Formation Handbook
Accurate distances to local molecular clouds are critical for understanding the star and planet formation process, yet distance measurements are often obtained inhomogeneously on a cloud-by-cloud
The Milky Way in Molecular Clouds: A New Complete CO Survey
New large-scale CO surveys of the first and second Galactic quadrants and the nearby molecular cloud complexes in Orion and Taurus, obtained with the CfA 1.2 m telescope, have been combined with 31
Corrugations in the Disk of the Edge-On Spiral Galaxy IC 2233
We recently reported the discovery of a regular corrugation pattern in the H I disk of the isolated, edge-on spiral galaxy IC 2233. Here we present measurements of the vertical structure of this
Planck 2013 results. XI. All-sky model of thermal dust emission
This paper presents an all-sky model of dust emission from the Planck 857, 545 and 353 GHz, and IRAS 100 micron data. Using a modified black-body fit to the data we present all-sky maps of the dust
Regularly Spaced Infrared Peaks in the Dusty Spirals of Messier 100
Spitzer Space Telescope InfraRed Array Camera (IRAC) images of M100 show numerous long filaments with regularly-spaced clumps, suggesting the associated cloud complexes formed by large-scale
Galactic reddening in 3D from stellar photometry – an improved map
We present a new 3D map of interstellar dust reddening, covering three quarters of the sky (declinations of δ ≳ −30°) out to a distance of several kiloparsecs. The map is based on high-quality
Hipparcos distance estimates of the Ophiuchus and the Lupus cloud complexes
We combine extinction maps from the Two Micron All Sky Survey (2MASS) with Hipparcos and Tycho parallaxes to obtain reliable and high-precision estimates of the distance to the Ophiuchus and Lupus
A Large Catalog of Accurate Distances to Molecular Clouds from PS1 Photometry
Distance measurements to molecular clouds are important but are often made separately for each cloud of interest, employing very different data and techniques. We present a large, homogeneous catalog
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