Star Formation in the Taurus filament L 1495: from Dense Cores to Stars

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Star Formation in the Taurus filament L 1495: from Dense Cores to Stars

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Title: Star Formation in the Taurus filament L 1495: from Dense Cores to Stars
Author: Schmalzl, Markus; Kainulainen, Jouni; Launhardt, Ralf; Henning, Thomas; Quanz, Sascha P.; Alves, João; Román-Zúñiga, Carlos G.; Goodman, Alyssa A.; Pineda, Jaime E.

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Citation: Schmalzl, Markus, Jouni Kainulainen, Sascha P. Quanz, João Alves, Alyssa A. Goodman, Thomas Henning, Ralf Launhardt, Jaime E. Pineda, and Carlos G. Román-Zúñiga. 2010. Star formation in the Taurus filament L 1495: from dense cores to stars. The Astrophysical Journal 725(1): 1327-1336.
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Abstract: We present a study of dense structures in the L1495 filament in the Taurus Molecular Cloud and examine its star-forming properties. In particular we construct a dust extinction map of the filament using deep near-infrared observations, exposing its small-scale structure in unprecedented detail. The filament shows highly fragmented substructures and a high mass-per-length value of \(M_{line} = 17 M \odot \ pc^{-1}\), reflecting star-forming potential in all parts of it. However, a part of the filament, namely B211, is remarkably devoid of young stellar objects. We argue that in this region the initial filament collapse and fragmentation is still taking place and star formation is yet to occur. In the star-forming part of the filament, we identify 39 cores with masses from \(0.4 to 10 M \odot\) and preferred separations in agreement with the local Jeans length. Most of these cores exceed the Bonnor-Ebert critical mass, and are therefore likely to collapse and form stars. The Dense Core Mass Function follows a power law with exponent \(\lceil = 1.2 \pm 0.2\), a form commonly observed in star-forming regions.
Published Version: doi:10.1088/0004-637X/725/1/1327
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