Wide field imaging of the star forming region Lynds 1551.

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

The authors have obtained images of the L1551 star forming region using narrow band filters centered on the Hα and [S II] 6717/31 emission lines. Many of the semi-stellar knots recently discovered in this zone by Graham and Heyer (1990) in their Hα+[N II] images have very strong [S II] emission. Their structure and emission suggest that these are Herbig-Haro objects. HH 30, at ≡4 arcminutes NE of IRS 5, has a detectable counterjet in the Hα images, but it is absent in the [S II] images. The authors suggest that the HH 30 counterjet may be interacting with the L1551 cavity near the reflection nebula in HH 102.

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