2001ApJ...562..804K

Query : 2001ApJ...562..804K

2001ApJ...562..804K - Astrophys. J., 562, 804-823 (2001/December-1)

Sulfur, chlorine, and argon in planetary nebulae. I. Observations and abundances in a northern sample.

KWITTER K.B. and HENRY R.B.C.

Abstract (from CDS):

This paper is the first of a series specifically studying the abundances of sulfur, chlorine, and argon in type II planetary nebulae (PNe) in the Galactic disk. Ratios of S/O, Cl/O, and Ar/O constitute important tests of differential nucleosynthesis of these elements and serve as strict constraints on massive star yield predictions. We present new ground-based optical spectra extending from 3600-9600 Å for a sample of 19 type II northern PNe. This range includes the strong near-infrared lines of [S III] λλ9069,9532, which allows us to test extensively their effectiveness as sulfur abundance indicators. We also introduce a new, model-tested ionization correction factor for sulfur. For the present sample, we find average values of S/O=1.2x10–2±0.71x10–2, Cl/O=3.3x10–4±1.6x10–4, and Ar/O=5.0x10–3±1.9x10–3.

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Journal keyword(s): ISM: Abundances - Nuclear Reactions, Nucleosynthesis, Abundances - ISM: Planetary Nebulae: General - Stars: Evolution

Simbad objects: 21

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Number of rows : 21
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 M 42 HII 05 35 16.8 -05 23 15           ~ 4411 0
2 NAME Ori A MoC 05 38 -07.1           ~ 3187 0
3 M 97 PN 11 14 47.7122947800 +55 01 08.482832076   15.414 15.777 15.960 16.194 ~ 356 2
4 NGC 6309 PN 17 14 04.3074600360 -12 54 37.893271860   11.6       O(He) 320 1
5 PN M 3-15 PN 17 45 31.7096699160 -20 58 01.493896440           [WC4/6] 137 1
6 NGC 6439 PN 17 48 19.820 -16 28 44.42     12.2     ~ 180 0
7 NGC 6572 PN 18 12 06.3181909152 +06 51 13.027935240   9.3 10.8     [WC] 761 0
8 PN M 1-50 PN 18 33 20.88 -18 16 37.1           ~ 88 0
9 PN M 1-54 PN 18 36 08.357 -16 59 57.02           ~ 87 0
10 PN M 1-57 PN 18 40 20.2561639992 -10 39 47.216941560           ~ 98 0
11 PN Pe 1-18 PN 18 48 46.43664 -05 56 06.9576     15.2     ~ 51 0
12 NGC 6790 PN 19 22 56.972976 +01 30 46.40112   12.247 10.504 12.684   wels 329 0
13 PN M 1-74 PN 19 42 18.78 +15 09 08.3   12.8       ~ 127 0
14 NGC 6884 PN 20 10 23.6424784416 +46 27 39.631794408   11.9 10.9     ~ 322 1
15 NGC 6879 PN 20 10 26.6930056361 +16 55 21.272110541   13.661 12.540 14.075   O3f(He) 157 0
16 NGC 6886 PN 20 12 42.83016 +19 59 22.6320   13.053 11.719     ~ 325 1
17 NGC 6891 PN 20 15 08.8435405584 +12 42 15.584146740   12.11 12.51     O3Ib(f*) 405 0
18 NGC 6894 PN 20 16 23.965 +30 33 53.17           ~ 206 0
19 NGC 7026 PN 21 06 18.5723414928 +47 51 06.774735780   15.33 15.1     [WC3] 427 1
20 IC 5217 PN 22 23 55.7180137224 +50 58 00.464340252     15.5     [WC7] 314 0
21 PN M 1-80 PN 22 56 19.89864 +57 09 20.8656           ~ 99 2

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