Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aj....108.1427o&link_type=abstract
The Astronomical Journal, vol. 108, no. 4, p. 1427-1431
Astronomy and Astrophysics
Astronomy
3
Astronomical Photometry, Astronomical Spectroscopy, Herbig-Haro Objects, Infrared Astronomy, Astrometry, Calibrating, Charge Coupled Devices, Data Reduction, H Alpha Line, H Beta Line, Infrared Astronomy Satellite, Planetary Nebulae, Reflector Antennas
Scientific paper
A very high excitation Herbig-Haro (HH) object, designated as HH 171, has been discovered in a small dark cloud in southeastern Vela. Narrow-band charge coupled device (CCD) imaging of the region and low dispersion spectroscopy for the objects as well as for some nearby objects have been obtained. Although the spectrum is somewhat peculiar as an HH object, several lines of evidence, in particular, the coexistence of reflection nebulosities and the presence of nearby reflection nebulae, indicate that the object is neither a planetary nebula nor a supernova remnant but an HH object. It has the highest (O III) 4959+5007/H-beta ratio among known HH objects. The relative weakness of the (S II) lines and the bipolar morphology is also discussed.
Noumaru Jun'ichi
Ogura Katsuo
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