HH 123 - A Herbig-Haro object in the high-latitude cloud L 1642

Details HH 123 - A Herbig-Haro object in the high-latitude cloud L 1642 HH 123 - A Herbig-Haro object in the high-latitude cloud L 1642

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...229..527r&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 229, no. 2, March 1990, p. 527-532. Research supported by the Danish Board for

Astronomy and Astrophysics

Astrophysics

14

Binary Stars, Herbig-Haro Objects, Molecular Clouds, Pre-Main Sequence Stars, Star Formation, Stellar Mass, Emission Spectra, H Alpha Line, High Resolution, Stellar Luminosity, Stellar Spectra

Scientific paper

L 1642 is a very nearby high-Galactic-latitude cloud with low-mass star formation. A new Herbig-Haro object, HH 123, originating from the brighter component of the visual premain-sequence binary L 1642 - 2, has been discovered. It is a slightly elongated amorphous object, and low-dispersion spectra show it to be of intermediate excitation. High-resolution echelle spectra of a number of red lines reveal three emission components. They are interpreted in terms of two bow shocks moving in opposite directions away from the star. The energy source is a low-luminosity M0 emission-line star, and its companion is also an H-alpha emission star.

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