Return to search

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 (CO)-C-12(J = 2-1) and (CO)-C-13(J = 2-1) observations of a remote region within the middle of the California molecular cloud, we aim to investigate the relationship between filaments, cores, and a molecular outflow in a relatively pristine environment. An extinction map of the region from Herschel Space Observatory observations reveals the presence of two 2 pc long filaments radiating from a highextinction clump. Using the (CO)-C-13 observations, we show that the filaments have coherent velocity gradients and that their mass-per-unit-lengths may exceed the critical value above which filaments are gravitationally unstable. The region exhibits structure with eight cores, at least one of which is a starless, prestellar core. We identify a low-velocity, low-mass molecular outflow that may be driven by a flat spectrum protostar. The outflow does not appear to be responsible for driving the turbulence in the core with which it is associated, nor does it provide significant support against gravitational collapse.

Identiferoai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/624336
Date15 May 2017
CreatorsImara, Nia, Lada, Charles, Lewis, John, Bieging, John H., Kong, Shuo, Lombardi, Marco, Alves, Joao
ContributorsUniv Arizona, Steward Observ
PublisherIOP PUBLISHING LTD
Source SetsUniversity of Arizona
LanguageEnglish
Detected LanguageEnglish
TypeArticle
Rights© 2017. The American Astronomical Society. All rights reserved.
Relationhttp://stacks.iop.org/0004-637X/840/i=2/a=119?key=crossref.4914c213d16e37a6d37144770d651698

Page generated in 0.002 seconds