2008ApJ...682L.105O

Query : 2008ApJ...682L.105O

2008ApJ...682L.105O - Astrophys. J., 682, L105-L108 (2008/August-1)

Detection of fluorine in the halo planetary nebula BoBn 1: evidence for a binary progenitor star.

OTSUKA M., IZUMIURA H., TAJITSU A. and HYUNG S.

Abstract (from CDS):

We have found the fluorine lines [F IV] λλ3996.92, 4059.90 in the extremely metal-poor ([Ar/H] = -2.10±0.21) halo planetary nebula (PN) BoBn 1 in high-dispersion spectra from the 8.2 m VLT UVES archive. Chemical abundance analysis shows that the fluorine abundance is [F/H] = +1.06±0.08, making BoBn 1 the most fluorine-enhanced and metal-poor PN among fluorine-detected PNe and providing new evidence that fluorine is enhanced by nucleosynthesis in low-mass metal-poor stars. A comparison with the abundances of carbon-enhanced metal-poor (CEMP) stars suggests that BoBn 1 shares their origin and evolution with CEMP-s stars such as HE 1305+0132. BoBn 1 might have evolved from a binary consisting of ∼2 M_☉ primary and ∼0.8 M_☉ secondary stars.

Abstract Copyright: ∼

Journal keyword(s): ISM: Abundances - planetary nebulae: individual (BoBn 1)

Simbad objects: 19

Full paper

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Number of rows : 19

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2023	#notes
1	* 29 Psc	V*	00 01 49.4481127032	-03 01 39.011820024	4.47	4.98	5.10			B7III-IV	221	0
2	NGC 40	PN	00 13 01.0170097248	+72 31 19.033338720		11.63	11.46			[WC8]	609	2
3	PN BoBn 1	PN	00 37 16.03	-13 42 58.6		16				~	130	1
4	IC 2003	PN	03 56 21.9884187048	+33 52 30.759977028		13.11	11.87	13.44		[WC3?]	251	0
5	IC 418	PN	05 27 28.2059533560	-12 41 50.282287764		9.405	9.010	10.118		O7fp	1023	2
6	NGC 2022	PN	05 42 06.1904253312	+09 05 10.585995576		14.9	14.2			[WC]	358	0
7	NGC 2440	PN	07 41 55.34592	-18 12 30.4128		11.469	10.104			~	646	2
8	IC 2501	PN	09 38 47.1901701864	-60 05 30.807638520		11.7	10			O3-6	179	0
9	NGC 3242	PN	10 24 46.1335521792	-18 38 32.296857792		11.83	12.15			~	815	1
10	NGC 3918	PN	11 50 17.7709504944	-57 10 57.017302428		10.0	8.5			~	377	0
11	NGC 4361	PN	12 24 30.7510527528	-18 47 05.567336304		12.8	13.2			[WC]	391	1
12	PN H 4-1	PN	12 59 27.77	+27 38 10.5		15.92				~	158	0
13	HE 1305+0132	Pe*	13 08 17.7580988112	+01 16 49.474585920		14.15	12.57	11.910	11.443	CEMP-s	25	0
14	NGC 5315	PN	13 53 56.9726795664	-66 30 50.859483264		14.58	14.40			[WO4]	302	0
15	NGC 6302	PN	17 13 44.51256	-37 06 11.3616						O-rich	785	1
16	NGC 7027	PN	21 07 01.571952	+42 14 10.47120		10.358	8.831	10.157		~	2425	1
17	M 15	GlC	21 29 58.33	+12 10 01.2						~	3085	0
18	PN Ps 1	PN	21 29 59.3972661392	+12 10 26.275343735		13.39	14.06			sdO	284	0
19	NGC 7662	PN	23 25 53.8318792825	+42 32 05.835828380				11.427		~	923	0

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