1997PASP..109...71G

Query : 1997PASP..109...71G

1997PASP..109...71G - Publ. Astron. Soc. Pac., 109, 71 (1997/January-0)

Spatially resolved study of chemical abundances in planetary nebulae. (Dissertation Summaries)

GUERRERO M.A.

Abstract (from CDS):

We have obtained spatially resolved intermediate-dispersion spectroscopy observations for a sample of extended planetary nebulae (PNe) representative of different morphological classes. The study has included multiple shell PNe (M 1-46, NGC 2438, NGC 5882 and NGC 6720), bipolar PNe (K 4-55, M 1-75, NGC 2440 and NGC 2818) and hydrogen-poor PNe (A 30 and A 58). The information oobtained has allowed an analysis of the chemical composition gradients in the ionized gas. In particular, we have specially studied the He/H, N/O y Ne/O ratios. A comparative study of the chemical abundances and physical properties of the haloes and main nebulae of the multiple shell PNe has been carried out. In addition, spatially-resolved high-dispersion spectroscopy data were obtained for M 1-46 and NGC 6720, thus allowing an analysis of their kinematics and 3- dimensional structures, and a detailed knowledge of the loss-mass history.

Abstract Copyright: ∼

Journal keyword(s): Dissertation Summaries

Simbad objects: 10

goto Full paper

goto View the references in ADS

Number of rows : 10
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 2438 PN 07 41 50.5194253896 -14 44 07.470144744           ~ 291 3
2 NGC 2440 PN 07 41 55.34603 -18 12 30.4117   11.469 10.104     ~ 665 2
3 PN A66 30 PN 08 46 53.4639874872 +17 52 46.369394580   14.23 14.30 13.47   [WC5] 431 0
4 NGC 2818A PN 09 16 01.4901525600 -36 37 37.516376856           ~ 239 1
5 NGC 5882 PN 15 16 49.9562553264 -45 38 58.616280132   11.9 10.9     ~ 281 1
6 PN M 1-46 PN 18 27 56.3175434256 -15 32 54.434037264     12.83     O(H)7I(fc) 129 0
7 M 57 PN 18 53 35.0967659112 +33 01 44.883287544   15.405 15.769 15.901 16.062 DA(O?) 868 2
8 PN A66 58 PN 19 18 20.476 +01 46 59.62           [WC4] 327 0
9 PN M 1-75 PN 20 04 44.21070 +31 27 26.6673           ~ 102 2
10 PN K 4-55 PN 20 45 10.021 +44 39 14.58   16.0 16.5     ~ 47 0

To bookmark this query, right click on this link: simbad:objects in 1997PASP..109...71G and select 'bookmark this link' or equivalent in the popup menu