2005ApJ...631L..61Z

Query : 2005ApJ...631L..61Z

2005ApJ...631L..61Z - Astrophys. J., 631, L61-L64 (2005/September-3)

Fluorine abundances in planetary nebulae.

ZHANG Y. and LIU X.-W.

Abstract (from CDS):

We have determined fluorine abundances from the [F II] λ4789 and [F IV] λ4060 nebular emission lines for a sample of planetary nebulae (PNe). Our results show that fluorine is generally overabundant in PNe, thus providing new evidence for the synthesis of fluorine in asymptotic giant branch (AGB) stars. [F/O] is found to be positively correlated with the C/O abundance ratio, in agreement with the predictions of theoretical models of fluorine production in thermally pulsing AGB stars. A large enhancement of fluorine is observed in the Wolf-Rayet PN NGC 40, suggesting that high mass-loss rates probably favor the survival of fluorine.

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Journal keyword(s): ISM: Abundances - Line: Identification - ISM: Planetary Nebulae: General

Simbad objects: 18

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Number of rows : 18
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 40 PN 00 13 01.0170097248 +72 31 19.033338720   11.63 11.46     [WC8] 632 2
2 IC 2003 PN 03 56 21.9884187048 +33 52 30.759977028   13.11 11.87 13.44   [WC3?] 261 0
3 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
4 IC 418 PN 05 27 28.2059533560 -12 41 50.282287764   9.405 9.010 10.118   O7fp 1059 2
5 M 42 HII 05 35 16.8 -05 23 15           ~ 4411 0
6 NAME Ori A MoC 05 38 -07.1           ~ 3187 0
7 NGC 2022 PN 05 42 06.1904253312 +09 05 10.585995576   14.9 14.2     [WC] 371 1
8 NGC 2440 PN 07 41 55.34603 -18 12 30.4117   11.469 10.104     ~ 665 2
9 IC 2501 PN 09 38 47.1901701864 -60 05 30.807638520   11.7 10     O3-6 188 1
10 NGC 3242 PN 10 24 46.1335521792 -18 38 32.296857792   11.83 12.15     ~ 838 1
11 NGC 3918 PN 11 50 17.7709504944 -57 10 57.017302428   10.0 8.5     ~ 390 1
12 NGC 4361 PN 12 24 30.7510527528 -18 47 05.567336304   12.8 13.2     [WC] 407 0
13 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
14 NGC 5315 PN 13 53 56.9726795664 -66 30 50.859483264   14.58 14.40     [WO4] 323 1
15 NGC 6302 PN 17 13 44.5 -37 06 11           O-rich 821 2
16 NGC 7027 PN 21 07 01.571952 +42 14 10.47120   10.358 8.831 10.157   ~ 2541 1
17 Ass Cep OB 2 As* 21 51 +60.0           ~ 303 0
18 NGC 7662 PN 23 25 53.8318792825 +42 32 05.835828380       11.427   ~ 940 1

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