Abstract
Spectral studies of one of the brightest Herbig-Haro objects, HH12, using a multiaperture (multi-pupil) spectrograph are reported. We identify nine knots (densification nodes) in intensity diagrams. Hα emission mainly predominates in this object, except in two of the knots (C and M) which have a lower excitation level, given their high [SII] line intensity. The average electron temperature across the object is 6700 K. It is shown that the radial velocity of the object as a whole is low, i.e., its motion is mostly in the celestial plane. The excitation source for HH12 is also discussed.
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Translated from Astrofizika, Vol. 49, No. 1, pp. 71–79 (February 2006).
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Hovhannessian, E.R., Magakian, T.Y. & Movsessian, T.A. Spectral study of the object HH12. Astrophysics 49, 63–69 (2006). https://doi.org/10.1007/s10511-006-0006-2
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DOI: https://doi.org/10.1007/s10511-006-0006-2