Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987aj.....94.1260j&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 94, Nov. 1987, p. 1260-1270. Research supported by the University of California and
Astronomy and Astrophysics
Astronomy
33
Herbig-Haro Objects, Stellar Motions, Astrometry, Astronomical Spectroscopy, Morphology, Orion Constellation, Radial Velocity, Reflection Nebulae
Scientific paper
The authors have determined proper motions and have obtained long-slit low-resolution spectroscopy for many of the Herbig-Haro (HH) objects in the region of NGC 2068. The HH 24 complex alone contains two dynamically distinct bipolar "jets". The authors believe there are three exciting stars in this region, two within the bounds of HH 24: one (SSV 63) is responsible for HH 24 knots CEA and the objects HH 19 and HH 20 to the northwest of HH 24, and possibly for HH 27 to the south; a second for HH 24 knots G1 - G3 and probably for HH 23. A third star (probably SSV 59) is responsible for HH 25 and HH 26, which also define a bipolar flow. The proper motions and radial velocities suggest that objects have undergone both acceleration in the vicinity of the exciting stars, and deceleration a parsec away.
Cohen Martin
Gehren Thomas
Jones Burton F.
Wehinger Peter A.
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