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

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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 - 2026 		#notes
1 * 29 Psc V* 00 01 49.4481127032 -03 01 39.011820024 4.47 4.98 5.10     B7III-IV 232 0
2 NGC 40 PN 00 13 01.0170097248 +72 31 19.033338720   11.63 11.46     [WC8] 632 2
3 PN BoBn 1 PN 00 37 16.03 -13 42 58.6   16       ~ 135 1
4 IC 2003 PN 03 56 21.9884187048 +33 52 30.759977028   13.11 11.87 13.44   [WC3?] 261 0
5 IC 418 PN 05 27 28.2059533560 -12 41 50.282287764   9.405 9.010 10.118   O7fp 1059 2
6 NGC 2022 PN 05 42 06.1904253312 +09 05 10.585995576   14.9 14.2     [WC] 371 1
7 NGC 2440 PN 07 41 55.34603 -18 12 30.4117   11.469 10.104     ~ 665 2
8 IC 2501 PN 09 38 47.1901701864 -60 05 30.807638520   11.7 10     O3-6 188 1
9 NGC 3242 PN 10 24 46.1335521792 -18 38 32.296857792   11.83 12.15     ~ 838 1
10 NGC 3918 PN 11 50 17.7709504944 -57 10 57.017302428   10.0 8.5     ~ 390 1
11 NGC 4361 PN 12 24 30.7510527528 -18 47 05.567336304   12.8 13.2     [WC] 407 0
12 PN H 4-1 PN 12 59 27.78107 +27 38 10.6612           OB 167 0
13 HE 1305+0132 Pe* 13 08 17.7580988112 +01 16 49.474585920   14.15 12.57 11.910 11.443 CEMP-s 27 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 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3274 0
18 PN Ps 1 PN 21 29 59.3972661392 +12 10 26.275343735   13.39 14.06     sdO 295 0
19 NGC 7662 PN 23 25 53.8318792825 +42 32 05.835828380       11.427   ~ 940 1

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