Velocity Structure in the Orion Nebula. I. Spectral Mapping in Low-Ionization Lines
Abstract
High-dispersion echelle spectroscopy in optical forbidden lines of O^0, S^+, and S^2+ is used to construct velocity-resolved images and electron density maps of the inner region of the Orion nebula with a resolution of 10 km s-1 x 3" x 2". Among the objects and regions newly discovered in this study are (1) the Diffuse Blue Layer: an extended layer of moderately blue-shifted, low-density, low-ionization emission in the southeast region of the nebula; (2) the Red Bay: a region to the east of the Trapezium where the usual correlation between velocity and ionization potential is very weak, and where the emitting layer is very thick; and (3) HH 873: a new redshifted jet to the southwest of the Trapezium.
Cite
@article{arxiv.astro-ph/0611417,
title = {Velocity Structure in the Orion Nebula. I. Spectral Mapping in Low-Ionization Lines},
author = {Ma. T. Garcia-Diaz and W. J. Henney},
journal= {arXiv preprint arXiv:astro-ph/0611417},
year = {2016}
}
Comments
Astronomical Journal, in press. Figures have been compressed to comply with arxiv size requirements. See them how they were meant to be at http://www.ifront.org/wiki/Spectral_Mapping_Paper_I