Herbig Haro objects in the vicinity of NGC 2023

Details Herbig Haro objects in the vicinity of NGC 2023 Herbig Haro objects in the vicinity of NGC 2023

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987mnras.227..361m&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 227, July 15, 1987, p. 361-372.

Astronomy and Astrophysics

Astronomy

18

Astronomical Photography, Astronomical Spectroscopy, Herbig-Haro Objects, Reflection Nebulae, Spectral Energy Distribution, Emission Spectra, H Alpha Line, Infrared Spectra, Spatial Distribution, Stellar Luminosity

Scientific paper

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.

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