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dc.contributor.authorMizusawa, Trisha F.
dc.contributor.authorElmegreen, Debra Meloy
dc.contributor.authorElmegreen, Bruce G.
dc.contributor.authorErroz-Ferrer, Santiago
dc.contributor.authorKnapen, Johan H.
dc.contributor.authorTeich, Yaron
dc.contributor.authorPopinchalk, Mark
dc.contributor.authorAthanassoula, E.
dc.contributor.authorBosma, Albert
dc.contributor.authorComerón, Sébastien
dc.date.accessioned2014-08-28T15:36:32Z
dc.date.available2014-08-28T15:36:32Z
dc.date.issued2013-12-11
dc.identifier.citationElmegreen, D. M., Elmegreen, B. G., Erroz-Ferrer, S., Knapen, J. H., Teich, Y., Popinchalk, M., . . . Sheth, K. (2014). Embedded star formation in S4G galaxy dust lanes. Astrophysical Journal, 780(1)en_US
dc.identifier.urihttp://hdl.handle.net/11141/289
dc.description.abstractStar-forming regions that are visible at 3.6 μm and Hα but not in the u, g, r, i, z bands of the Sloan Digital Sky Survey are measured in five nearby spiral galaxies to find extinctions averaging ∼3.8 mag and stellar masses averaging ∼5 × 104 M ⊙. These regions are apparently young star complexes embedded in dark filamentary shock fronts connected with spiral arms. The associated cloud masses are ∼10 7 M ⊙. The conditions required to make such complexes are explored, including gravitational instabilities in spiral-shocked gas and compression of incident clouds. We find that instabilities are too slow for a complete collapse of the observed spiral filaments, but they could lead to star formation in the denser parts. Compression of incident clouds can produce a faster collapse but has difficulty explaining the semi-regular spacing of some regions along the arms. If gravitational instabilities are involved, then the condensations have the local Jeans mass. Also in this case, the near-simultaneous appearance of equally spaced complexes suggests that the dust lanes, and perhaps the arms too, are relatively young.en_US
dc.language.isoen_USen_US
dc.rightsThis published article is available in accordance with the publisher's policy. It may be subject to U.S. Copyright Law.en_US
dc.rights.urihttps://aas.org/publications/aas-copyright-policyen_US
dc.titleEmbedded star formation in S4G galaxy dust lanesen_US
dc.typeArticleen_US
dc.identifier.doi10.1088/0004-637X/780/1/32


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