Discovery of an extremely high excitation Herbig-Haro object in southeastern VELA

Abstract

view Abstract Citations (4) References (26) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Discovery of an Extremely High Excitation Herbig-Haro Object in Southeastern VELA Ogura, Katsuo ; Noumaru, Junichi Abstract 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. Publication: The Astronomical Journal Pub Date: October 1994 DOI: 10.1086/117165 Bibcode: 1994AJ....108.1427O Keywords: 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; Astronomy; STARS: INDIVIDUAL: HH 171; STARS: PRE-MAIN SEQUENCE full text sources ADS | data products SIMBAD (24)