Ongoing Star Formation Activity in the L1340 Dark Cloud

M. S. N. Kumar, B. G. Anandarao, Y. Ka Chun

Resumo
We present a study of the L1340 molecular cloud, which is known to be actively forming low- and intermediate-mass stars in three independent cores. We present optical and near-infrared images of the central regions of the three cores of this cloud, better known as RNO 7, RNO 8, and RNO 9. We show that RNO 7 is a Herbig Be cluster. We have discovered three Herbig-Haro flows in core A (southwestern part) of the cloud, named HH 487, 488, and 489. HH 487 is a spectacular set of bow shocks that appear to be driven by IRAS 02224+7227. HH 488A is a ~3.4′-long flow possibly overlapping a second flow (HH 488B) in the line of sight. HH 489 is a flow extending to ~1' on either side of the driving source IRAS 02249+7230. Most of these Herbig-Haro objects are found to be high-excitation objects.

The Astronomical Journal
Volume 123, Página 2583
maio 2002

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