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Astrophysics > Astrophysics of Galaxies

arXiv:1607.00281 (astro-ph)
[Submitted on 1 Jul 2016]

Title:The System of Molecular Clouds in the Gould Belt

Authors:V.V. Bobylev
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Abstract:Based on high-latitude molecular clouds with highly accurate distance estimates taken from the literature, we have redetermined the parameters of their spatial orientation. This system can be approximated by a 350x235x140 pc ellipsoid inclined by the angle i=17+/-2 degrees to the Galactic plane with the longitude of the ascending node l{\Omega}=337+/-1 degrees. Based on the radial velocities of the clouds, we have found their group velocity relative to the Sun to be (u0,v0,w0) = (10.6,18.2,6.8)+/-(0.9,1.7,1.5) km/s. The trajectory of the center of the molecular cloud system in the past in a time interval of ~60 Myr has been constructed. Using data on masers associated with low-mass protostars, we have calculated the space velocities of the molecular complexes in Orion, Taurus, Perseus, and Ophiuchus. Their motion in the past is shown to be not random.
Comments: 15 pages, 4 figures
Subjects: Astrophysics of Galaxies (astro-ph.GA)
Cite as: arXiv:1607.00281 [astro-ph.GA]
  (or arXiv:1607.00281v1 [astro-ph.GA] for this version)
  https://doi.org/10.48550/arXiv.1607.00281
Journal reference: Astronomy Letters, 2016, Vol. 42, No. 8, pp. 544-554
Related DOI: https://doi.org/10.1134/S1063773716070021

Submission history

From: Anisa Bajkova [view email]
[v1] Fri, 1 Jul 2016 15:08:29 UTC (469 KB)
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