Herbig-Haro objects around CG 30

Details Herbig-Haro objects around CG 30 Herbig-Haro objects around CG 30

2010-03-23

arxiv.org/abs/1003.4327v1

RevMexAA, 2010, 46, 67

Astronomy and Astrophysics

Astrophysics

Earth and Planetary Astrophysics

Scientific paper

In this work we study Herbig-Haro objects located in the region around the head of the cometary globule CG 30. Two sets of optical images are presented. The first set was obtained with the 3.5 m New Technology Telescope in 1995 in three emission lines: Halpha, [SII]6731,6716 A and [OII]3729 A. The second set is an Halpha image of the CG 30/31/38 complex obtained in 2006 with the 8 m Subaru telescope. A proper motion study of the HH objects in the region was performed using the Halpha images from both epochs. Due to the high resolution of our images we were able to, for the first time, resolve the HH 120 object into ten knots and measure proper motions for some of them. We discover several new HH objects and a large bipolar jet, HH 950, emerging from the head of CG 30. We suggest that two previously known submillimeter sources are the driving sources for the HH 120 and HH 950 flows.

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