Herbig Haro objects in the vicinity of NGC 2023
Open Access
- 1 July 1987
- journal article
- research article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 227 (2) , 361-372
- https://doi.org/10.1093/mnras/227.2.361
Abstract
Two groups of Herbig Haro objects have been discovered in the vicinity of the reflection nebula NGC 2023 and the Horsehead nebula (Barnard 33). Prime focus photographs, objective prism and low-dispersion spectra, and high-resolution line profiles have been obtained for the HH objects and proper motions have been derived for the brighter knots. Low-dispersion spectra of two possible exciting stars for the HH objects have also been obtained. The HH group closer to NGC 2023 shows a spatial distribution and proper motions suggesting a nearby faint star with an IR excess and strong Hα emission as the probable exciting source. However, no strong candidate was found for the exciting star of the second group of HH objects which are situated near V615 Ori and the base of the Horsehead nebula.Keywords
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