Bibcode
Flores-Duran, S.; Peña, M.; Hernández-Martínez, L.; García-Rojas, J.; Ruiz, M. T.
Referencia bibliográfica
Asymmetrical Planetary Nebulae VI conference, Proceedings of the conference held 4-8 November, 2013. Edited by C. Morisset, G. Delgado-Inglada and S. Torres-Peimbert. Online at http://www.astroscu.unam.mx/apn6/PROCEEDINGS/, id. #22
Fecha de publicación:
4
2014
Número de citas
0
Número de citas referidas
0
Descripción
"Using high resolution spectroscopic data obtained with Magellan Inamori
Kyocera Echelle (MIKE) at the Magellan telescope at Las Campanas
Observatory it was possible to resolve the emission line profiles of
[OIII] 5007, Ha and [NII] 6583 in two planetary nebulae belonging to the
Local Group galaxy NGC 6822 (Flores-Durán et al. submitted). The
two PNe, called PN4 and PN7 were identified after Leisy et al. (2005,
A&A, x436, 437). In the case of PN4, it presents wide lines that
show a structure with three components. The [NII] 6583 line profile
clearly shows a central component surrounded by what appears to be a
shell with an expantion velocity of 25 km s-1. For PN7, the [OIII]
emission lines present two very close components differing in velocity
by about 15 km s‑1 and, in the [N II] 6583 profile a faint
very-wide component is apparent. This latter component represents a sort
of bipolar outflow at high velocities (about 140 km s‑1) as the
case of the galactic M1-32, M3-15 and others (Medina et al. 2006, RMAA,
42, 53; Akras & López 2012, MNRAS, 425, 2197;
Rechy-García et al., this meeting)."