97 research outputs found
Analysis of the interstellar matter at the periphery of the supershell surrounding the CYG OB1 association in 2.12 micron molecular hydrogen line
We present observations of the vdB 130 cluster vicinity in a narrow-band
filter centered at a m molecular hydrogen line performed at the
Caucasus Mountain Observatory of the Lomonosov Moscow State University. The
observations reveal an H emission shell around vdB 130, coincident with a
bright infrared shell, visible in all \textit{Spitzer} bands. Also, numerous
H emission features are detected around infrared Blobs E and W and in the
vicinity of a protocluster located to the east of the shell, in a tail of a
cometary molecular cloud. H emission in the vicinity of the vdB~130 cluster
is mostly generated in well-developed \HII\ regions and is of fluorescent
nature. In the protocluster area, isolated spots are observed, where H
emission is collisionally excited and is probably related to shocks in
protostellar outflows. Obtained results are discussed in the context of
possible sequential star formation in the vicinity of the vdB 130 cluster,
triggered by the interaction of the expanding supershell surrounding the Cyg
OB1 association with the molecular cloud and an associated molecular filament.Comment: Accepted by Astrophysical Bulleti
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